Merge branch 'codex/goal-session' into codex/commands

# Conflicts:
#	docs/config-catalog.md
#	docs/module-graph.md
#	examples/acp-agent/tests/snapshots/error-finish/stdout.expected.jsonl
#	packages/ui/acp/README.md
#	packages/ui/tui/README.md
This commit is contained in:
Tianyi Cui
2026-07-20 23:03:55 +08:00
122 changed files with 3634 additions and 390 deletions

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@@ -0,0 +1,146 @@
# Agent Note: Bounded recovery for transient LLM request failures
Status: implemented
## Problem
`dsh-llm` can report provider failures either by throwing during adapter dispatch or iteration or by ending with `finish { kind: 'error' | 'aborted' }`. The final adapter boundary tags thrown failures so `dsh-agent-loop` can distinguish them from middleware and result-processing defects, and the loop normalizes both delivery forms into `agent/request-error` after closing the failed step. The default decision is `fail`; `dsh-compact-basic` is the only shipped recovery listener, and it retries a canonical context-window overflow only after compaction proves that the durable surface shrank.
That boundary is already safe for another request attempt. Raw `assistant/chunk` events carry the failed `turn` and `step`, message derivation ignores them unless a successful `assistant/message` cites them, tool calls are dispatched only after a successful terminal finish and assembly, and a retry opens a new numbered step from the durable log. The harness therefore does not need a second response lifecycle or tentative-output protocol to keep two attempts separate.
The prior boundary left three narrower gaps.
- Provider failures retain only a message and usually a code. HTTP status, retry delay, and provider request id are discarded or recoverable only through provider-specific error objects, so generic recovery cannot make or explain a decision without parsing text.
- Retry ownership differs by adapter. The hand-written DeepSeek adapter makes one attempt, while pi-ai profiles can enable opaque library retries. Combining hidden transport retries with an `agent/request-error` listener would multiply attempts and omit intermediate failures from the session log.
- A recovered failure has no durable status fact. The failed step and chunks remain reconstructable, but an observer cannot tell whether the agent is deliberately backing off, for how long, or why. A long silent wait looks like a stalled loop.
The goal is bounded recovery from transient failures of the same explicit provider/model request. Provider or model failover, response splicing, and semantic output repair are different problems and have no current consumer.
## Decision
### Preserve failure facts without embedding policy
`@deepseek-ai/dsh-llm` exports one JSON-serializable `LlmFailure` payload:
```ts ignore-check
type ProviderRequestId = Branded<'ProviderRequestId'>
interface LlmFailure {
message: string
code: string
status?: number
providerRetryAfterMs?: number
requestId?: ProviderRequestId
}
```
`code` remains the provider-neutral machine-routing taxonomy established by `HarnessError`; the new fields are observations from the provider boundary. `ProviderRequestId` is owned and constructed by `dsh-llm`, then serializes as its provider-issued string. The payload deliberately has no `retryable`, `failover`, `partialOutput`, provider, model, phase, or route id fields. Retryability belongs to policy, provider/model are already in the durable request header, and partial output is derived from the failed step's `assistant/chunk` events.
`LlmError` carries `failure: LlmFailure` and preserves `failure.code === error.code`. `FinishReasonMap.error` and `FinishReasonMap.aborted` carry the same payload instead of parallel failure shapes. An adapter-thrown `Error` keeps its exact object identity: the final-adapter scope associates the normalized facts with that object in call-local sidecar state and rethrows it unchanged; a non-`Error` throw is wrapped as today. `llmFailureOf(stream, error)` retrieves those facts alongside the existing provenance check, while an in-band finish without an error object becomes a new `LlmError`. This preserves listeners that key on error type or identity while giving all final-adapter failures, including unknown SDK exceptions, an `UNKNOWN` terminal payload.
The agent loop keeps `RequestError` as that exact error object and passes `LlmFailure` as a separate argument to `agent/request-error`; it does not mutate possibly frozen third-party errors. It also uses the payload when converting an in-band finish and when recording an unrecovered `turn/end.reason`.
Adapters extract structured facts before falling back to message inspection. They validate HTTP status, parse `Retry-After` seconds or dates into a positive finite millisecond delay, brand the provider request id when exposed, and distinguish their own timeout from the caller's abort. Provider-specific codes and messages may refine a mapping, but no recovery listener parses them.
The initial shared transient-code set is intentionally small: the adapters' existing `RATE_LIMIT` and `SERVER` mappings plus explicit `TIMEOUT` and `TRANSPORT` codes for the two missing remote-failure families. Authentication, quota, invalid request, context overflow, protocol, abort, and unknown failures keep distinct stable codes and are not transient by default. Adding a code requires adapter fixtures and a documented policy decision; it does not require expanding a second failure-class enum.
### Put retry policy on the existing failed-step seam
`@deepseek-ai/dsh-llm-retry` is a function plugin that listens to `agent/request-error`. It introduces no service or new loop branch; the agent-loop package changes only the data carried through its existing failed-step recovery control flow.
The `agent/request-error` seam carries the current `LlmFailure` and an immutable list of prior failures that led to another request attempt in this consecutive recovery sequence. `dsh-llm-retry` counts only prior failures whose codes are in its configured transient set, while `dsh-compact-basic` counts only prior context-overflow failures. A successful model request clears the history. Alternating transient and context-overflow failures therefore consume their owning policy budgets independently; the maximum request count is one plus the sum of the finite budgets of the loaded recovery policies.
The plugin resolves and validates this deployment configuration at load:
```ts ignore-check
interface Config {
maxTransientRetries?: number
initialDelayMs?: number
maxDelayMs?: number
jitterRatio?: number
retryableCodes?: string[]
}
```
The defaults are two transient retries, a 500 millisecond initial delay, a 10 second delay cap, 10 percent jitter, and the four transient codes above. The count and delay bounds match the conservative edge of the inspected implementations: [OpenCode uses two request retries with 500 ms/10 s bounds](https://github.com/anomalyco/opencode/blob/9976269ab1accfc9f9dc98a4a688c516934de422/%70ackages/llm/src/route/executor.ts#L36-L39), [Pi separates three agent-level retries from provider retries and defaults provider retries to zero](https://github.com/earendil-works/pi/blob/3da591ab74ab9ab407e72ed882600b2c851fae21/%70ackages/coding-agent/docs/settings.md#L139-L147), and [Codex uses finite request/stream budgets plus a five-minute idle timeout](https://github.com/openai/codex/blob/0fb559f0f6e231a88ac02ea002d3ecd248e2b515/codex-rs/model-provider-info/src/lib.rs#L25-L33). Ten percent follows [Codex's bounded jitter](https://github.com/openai/codex/blob/0fb559f0f6e231a88ac02ea002d3ecd248e2b515/codex-rs/codex-client/src/retry.rs#L40-L47). Two retries mean at most three provider requests when no other recovery policy applies. `maxTransientRetries` is a non-negative integer, delays are positive finite numbers with `initialDelayMs <= maxDelayMs`, `jitterRatio` is in `[0, 1]`, and codes are non-empty and unique. These are Cordis config fields rather than hidden constants so deployments can choose different cost and latency budgets.
For an eligible failure with budget remaining, the one-based transient retry count uses bounded exponential backoff. A valid `providerRetryAfterMs` replaces exponential backoff only when it does not exceed `maxDelayMs`; a longer provider delay causes delegation instead of an earlier retry that violates the provider instruction. Local backoff multiplies by an injected random factor in `[1 - jitterRatio, 1 + jitterRatio]` and clamps the final value to `maxDelayMs`; provider delay is not jittered.
The plugin owns a lifetime `AbortController` and tracks every active backoff callback. Each wait fuses the waterfall's turn signal with that lifetime signal. Effect cleanup first unregisters the listener, then aborts and awaits the active callbacks; a captured callback whose lifetime signal aborts returns `fail` and can neither retry nor enter the rest of its captured waterfall after disposal. This makes HMR disposal quiescent even though Cordis has already captured the listener.
Before sleeping, `dsh-llm-retry` appends one non-surface `llm/retry` session event containing the turn, failed step, one-based transient retry number, configured maximum, scheduled delay, and `LlmFailure`. The plugin owns the `SessionEventMap` augmentation; `dsh-session` remains generic persistence and does not absorb the optional policy's vocabulary. The event says what was scheduled, not that the next request completed; cancellation during the delay is subsequently visible on `turn/end`. The event ships only with a production renderer and replay/snapshot coverage, because its purpose is operational state rather than trace collection.
The listener calls `next()` for a non-transient code, an exhausted policy budget, or an over-cap provider delay. This preserves composition with context-overflow recovery and later policy plugins. It returns `{ action: 'retry' }` only after the delay completes under both signals; turn cancellation and plugin disposal return `fail`, after which the loop's cancellation/disposal checks remain authoritative.
The agent-spine demo bundle loads the plugin so the shared stdio/TUI, one-shot CLI, and ACP example compositions use the same bounded policy. Library consumers retain explicit plugin composition: omitting the plugin leaves `agent/request-error` at its current fail default.
### Make one layer own visible attempts
Adapters perform one provider request per `stream()` call. The pi-ai adapter removes public `maxRetries` and `maxRetryDelayMs` profile fields and disables library retries; the hand-written adapter keeps its current single-attempt behavior. This prevents an SDK budget from multiplying the agent budget and ensures every transient retry is represented by a closed failed step plus `llm/retry`.
`ctx.llm.stream()` remains the raw one-attempt waterfall. Direct callers such as compaction summarization receive the structured failure but do not gain automatic retry, because they have no agent step boundary or general durable place to separate attempts. A future direct-call consumer may justify a buffering helper that retries only before emitting a chunk; this decision adds no such helper.
### Bound stalled streams where they can be stopped
Each adapter exposes a validated `streamIdleTimeoutMs` configuration field with the five-minute prior-art default cited above. The interval is capped at Node's maximum timer delay so it cannot be clamped to one millisecond. It covers each outstanding iterator `next()` from demand to the next valid `StreamChunk`; time a consumer spends between `next()` calls is not provider idle time.
`@deepseek-ai/dsh-timeout` exposes a rearmable idle-watchdog primitive. One stable local `AbortController` is fused with the caller signal and passed to the transport for the whole adapter call; each outstanding `next()` arms the watchdog, resolution disarms it, and the next demand rearms it. Timeout aborts that stable controller with a capability-owned `TimeoutReason`, and `finally` clears the timer. The adapter classifies its watchdog as `TIMEOUT` and an earlier upstream abort as `ABORTED`. The existing one-shot `deadline()` is not presented as a sliding timer.
Boundary tests prove termination at both actual transports. The hand-written adapter aborts its fetch/reader, and the pi-ai adapter maps the stable signal through the SDK and proves the SDK closes the response. A timer that merely rejects a consumer promise while leaving the request running does not satisfy the contract.
### Keep attempts separate in the existing log
A failed attempt may leave `assistant/chunk` events in its closed step, but it never appends `assistant/message` and never dispatches a tool. A retry opens the next numbered step, reconstructs the request from the durable surface, and produces its own chunks. UIs may render live chunks while a step is open, then mark or clear that transient view when `llm/retry` identifies the failed step or `turn/end` records terminal failure; message derivation continues to ignore the failed chunks.
If recovery is exhausted, the final failure is stored once on `turn/end.reason` with the structured facts. If transient recovery continues, `llm/retry` is the durable home for that attempt's failure and delay. No standalone final-error event or response-id vocabulary is added.
## Out of scope
- Automatic provider or model failover. Requests already select one explicit provider and model, and the provider registry deliberately has one adapter owner per provider.
- Retrying or continuing after a successful terminal finish, or splicing chunks from two attempts into one assistant message.
- Repairing malformed tool arguments, refusals, content filters, or other semantic model output.
- Unbounded retries, unattended retry-until-cancelled behavior, circuit breakers, shared provider health, or cross-agent retry budgets.
- Changing `llm/stream` into a response lifecycle or adding convenience generation APIs without a production consumer.
## Alternatives considered
- **Retry inside `llm/stream` or the provider SDK** — rejected because a raw stream has no durable attempt boundary after emitting chunks, hidden SDK retries multiply budgets, and neither path can record each failed attempt consistently.
- **Add response start, interrupted, discarded, failed, and committed events to `dsh-llm`** — rejected because the agent log already separates raw chunks, successful messages, and numbered attempts. A second state machine would duplicate ownership without enabling the bounded same-route retry.
- **Add logical routes, capability matrices, and failover selection** — rejected because current requests already name provider and model explicitly, one adapter owns each provider, and no current consumer requires automatic fallback or can prove semantic compatibility.
- **Put `retryable` or `failover` on `LlmFailure`** — rejected because adapters report facts while deployment policy decides action. The same 429 may be retried in an interactive bundle and rejected in a cost-capped batch.
- **Retry forever while the caller remains active** — rejected because it gives one request unbounded cost and latency. Visible status makes bounded waiting understandable; it does not make an unlimited budget safe.
- **Log retry status only through the process logger** — rejected because process logs do not reconstruct session behavior and cannot drive replayed UI state.
- **Keep only flat codes** — rejected because retry delay and provider request id are structured provider facts, and HTTP status is necessary for diagnosis when different wire failures share one stable code.
## Verification
- `LlmFailure` is the single serializable payload for thrown, error-finish, and aborted-finish final-adapter failures; normalization preserves stable code, status, retry delay, branded provider request id, error cause, and caller-abort versus adapter-timeout classification where available.
- An adapter-thrown `Error` reaches `agent/request-error` as the exact same object while its sidecar `LlmFailure` reaches the adjacent argument; tests retain the existing identity assertion for extensible and frozen third-party errors.
- DeepSeek and pi-ai adapter tests cover representative 400, 401/403, 429, 5xx, connection, malformed/truncated stream, timeout, abort, retry-after seconds/date, request-id, and unknown-SDK-error paths without recovery policy parsing message text.
- Pi-ai pins the SDK option to zero retries and performs one observed wire attempt for a retryable provider response; separate tests make removing either boundary fail.
- `agent/request-error` carries current failure facts plus immutable prior-retried failure facts; a success clears that history, and alternating transient/context-overflow integration tests prove the two policies consume only their own finite budgets.
- `dsh-llm-retry` validates every config field at Loader startup, delegates all ineligible paths with `next()`, and makes at most `maxTransientRetries + 1` provider requests when no other policy applies.
- HMR-during-backoff tests prove disposal unregisters the listener, aborts and awaits its captured callbacks, emits no retry decision after disposal, and leaves no timer or promise alive.
- Pure unit tests cover transient-code selection, exponential backoff and jitter bounds, valid and over-cap `Retry-After`, exhausted budgets, deterministic timer/random seams, and abort during backoff.
- Real agent-loop tests cover failure before chunks, partial chunks then failure, thrown and in-band failures, retry to success in a new step, exhaustion to structured `turn/end.reason`, and composition with `dsh-compact-basic` context-overflow recovery.
- The partial-chunk integration test proves failed chunks remain attributed to the failed step, no assistant message or tool side effect is committed for that step, and the successful retry has distinct provenance.
- The plugin-owned `llm/retry` event is non-surface, survives JSONL and SQLite round trips, is ignored by message derivation, and drives TUI retraction plus durable discarded-attempt markers in append-only ACP and stdio streams. Keyless snapshots cover scheduling, cancellation, success, and exhaustion.
- Idle-watchdog tests prove the stable signal is rearmed only while `next()` is outstanding, disarmed during consumer think time and in `finally`, and classified separately from a total-call deadline and an earlier caller abort; adapter tests prove the signal stops the underlying request rather than merely detaching it.
- Direct `ctx.llm.stream()` callers remain single-attempt and receive the same structured failure facts.
## Consequences
- Every transient recovery attempt is visible as a closed step plus `llm/retry`, and the bounded policy prevents hidden SDK retries from multiplying cost. A retry can still duplicate provider billing even when no chunk arrived; the finite attempt budget limits but cannot remove that risk.
- Provider SDKs may hide status or retry headers. Those adapters retain the stable facts they expose and otherwise use a coarse code rather than letting recovery policy parse fragile text.
- Durable retry events expand the session protocol and UI state machine. Shipping the event and its consumer together prevents an unused telemetry vocabulary, but later schema changes still require persistence and replay work.
- Clearing a failed step's live chunks can visibly retract output. That is preferable to presenting discarded text or partial tool JSON as committed history, and snapshots pin the transition.
- Adapter-local idle enforcement stops stalled transports without counting consumer think time. Contract tests at each transport boundary guard against SDK drift.
- Multiple recovery plugins add their finite budgets. Their classifiers remain disjoint here; an overlapping classifier would be registration-order policy and must be documented and tested by the plugins that introduce it.
## Related
- [Structured error taxonomy](../../implemented/architecture/2026-06-11-structured-error-taxonomy.md) owns stable machine-routable codes and cause chaining.
- [Reconstructable requests](../../implemented/architecture/2026-07-05-reconstructable-requests.md) makes provider/model and complete request inputs durable before dispatch.
- [Timeout deadline library](../../implemented/architecture/2026-07-06-timeout-deadline-library.md) separates shared deadline classification from capability-owned termination.
- [After-call compaction pressure and context-overflow recovery](../../implemented/architecture/2026-07-10-after-call-compaction-pressure-and-overflow-recovery.md) owns the current closed-step request-recovery seam and bounded overflow retry.
- [Provider-routed LLM adapters](../../implemented/architecture/2026-07-14-provider-routed-llm-adapters.md) owns explicit provider/model routing and the one-adapter-per-provider invariant.

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@@ -18,7 +18,7 @@ Each new external-process or network tool re-derived the same four things — cl
### The library surface
Three functions plus one reason type:
Four functions, one watchdog interface, and one reason type:
```ts ignore-check
/** The internal reason attached to a timeout abort, so consumers can classify it after the fact. */
@@ -51,19 +51,34 @@ export function deadline(
code: string,
): { signal: AbortSignal; [Symbol.dispose](): void }
/** A stable signal plus one-at-a-time, timer-guarded async-iterator demand. */
export interface IdleWatchdog {
readonly signal: AbortSignal
next<T>(iterator: AsyncIterator<T>): Promise<IteratorResult<T>>
[Symbol.dispose](): void
}
/** Arm only while one iterator `next()` is outstanding, then rearm on later demand. */
export function idleWatchdog(
upstream: AbortSignal | undefined,
timeoutMs: number,
code: string,
): IdleWatchdog
/** Recover the TimeoutReason from an aborted signal (or error); `code` scopes the match to this deadline's timer. */
export function timeoutOf(x: AbortSignal | { reason?: unknown }, code?: string): TimeoutReason | undefined
```
`deadline` fuses an upstream signal with a timer through `AbortSignal.any`, adds a typed `TimeoutReason`, and exposes disposable timer cleanup. Non-positive timeouts are an internal no-timeout sentinel for backend-owned background work; external hints pass through `clampTimeout` and must be positive and finite. Without a timer or upstream signal, the function returns a never-aborting signal with the same disposal shape. Providers translate timeout reasons into seam-specific results. `timeoutOf(signal, code)` scopes classification so an outer nested deadline is treated as upstream cancellation rather than the inner capability's timeout.
`deadline` fuses an upstream signal with a one-shot timer through `AbortSignal.any`, adds a typed `TimeoutReason`, and exposes disposable timer cleanup. Non-positive timeouts are an internal no-timeout sentinel for backend-owned background work; external hints pass through `clampTimeout` and must be positive and finite. Without a timer or upstream signal, the function returns a never-aborting signal with the same disposal shape. `idleWatchdog` instead requires a positive finite interval, keeps one stable fused signal for the entire stream, and arms its timer only while one iterator `next()` is outstanding; resolution disarms it, later demand rearms it, concurrent demand fails, and disposal clears the active arm. Providers translate timeout reasons into seam-specific results. `timeoutOf(signal, code)` scopes classification so an outer nested deadline is treated as upstream cancellation rather than the inner capability's timeout.
### The division of labor
| Concern | Owner |
|---|---|
| Validate request hint and clamp default/max | `dsh-timeout` (`clampTimeout`) — pure arithmetic plus the shared positive-finite request contract |
| Arm timer, abort on deadline, carry reason, fuse with upstream cancel | `dsh-timeout` (`deadline`) |
| Clear the timer | `dsh-timeout` (`[Symbol.dispose]`) |
| Arm one-shot timer, abort on deadline, carry reason, fuse with upstream cancel | `dsh-timeout` (`deadline`) |
| Arm and rearm only around outstanding iterator demand | `dsh-timeout` (`idleWatchdog`) |
| Clear the timer | `dsh-timeout` (`[Symbol.dispose]` on either primitive) |
| Classify the first abort reason after abort | `dsh-timeout` (`timeoutOf`) |
| **Actually terminate the work** | the capability's implementation |
| The default/max *values* | the capability's config |
@@ -75,6 +90,7 @@ The signal only *notifies*; termination is always the listener's job, and the li
- **web_fetch** — the tool stays validate-and-forward; the provider's hand-rolled controller + `setTimeout` + manual listener + `finally` + `signal.reason` recovery is replaced by provider-owned `deadline`/`timeoutOf`. A pre-aborted upstream signal still throws `WEB_ABORTED` up front; otherwise `fetch` runs against the fused `d.signal`, and `translateAbortOrNetwork` classifies a thrown error by the signal (`timeoutOf` → `WEB_FETCH_TIMEOUT`, else aborted → `WEB_ABORTED`, else network → `WEB_PROVIDER_ERROR`). The public error-code contract is unchanged, and `TimeoutReason` never crosses the web seam as the public error.
- **bash** — `resolve()` clamps the request into an explicit spec. Foreground `run()` creates the deadline and passes its signal to process execution, whose existing abort listener performs the process-group kill. The executor classifies the first abort as timeout or cancellation. Background starts remain timeout-free and forward only upstream cancellation.
- **LLM adapters** — `dsh-llm-deepseek` and `dsh-llm-pi-ai` wrap actual transport iteration with `idleWatchdog`. The five-minute configured interval covers only outstanding provider demand, not time the downstream consumer spends between chunks. The stable signal reaches `fetch` or the SDK for the whole call, so timeout closes the underlying request and maps to `TIMEOUT`, while an earlier caller abort maps to `ABORTED`.
## Consequences
@@ -82,6 +98,7 @@ The signal only *notifies*; termination is always the listener's job, and the li
- `SpawnSpec.timeoutMs` and `SpawnOutcome.timedOut`/`aborted` were removed rather than kept as always-zero/always-false vestiges: with `runBash` owning no timer and the executor owning classification, they were read nowhere. This is the one deviation from the literal proposal shape (which passed `timeoutMs: 0` into `runBash`); an always-0 field read by nothing is dead weight under the per-file coverage gate.
- web_fetch shed its bespoke controller/timer/listener/reason-recovery; the classifier now keys off the deadline signal (`timeoutOf` + `aborted`) rather than the thrown error's shape, which is robust across both the request-phase reject-with-reason and the read-phase bare-`AbortError`.
- `AbortSignal.any` and `using`/`Symbol.dispose` enter the repo for the first time here (Node ≥ 24 baseline, already met).
- Model streams now share one rearmable timer contract without turning a sliding idle interval into a total-call deadline or charging consumer think time. The primitive still only notifies; adapter tests prove their transports observe its stable signal and terminate.
Out of scope, named to mark the boundary: `web_search` can gain an optional model-facing `timeout_ms` once its tool-schema/snapshot coverage is planned; future ripgrep-backed fs discovery tools can consume the same provider-owned deadline shape once they exist; a `tools/execute` waterfall middleware could arm a default deadline for every tool call by driving `exec.signal` — that would be a plugin that *consumes* this library and still only notifies, the hard kill remaining each capability's job.

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@@ -2,5 +2,5 @@
# side as of the last confirmed-consistent state. Both languages carry equal authority;
# after editing either side, bring the other along and re-record with:
# pnpm run verify-translation-pairing --write
2026-07-14-provider-routed-llm-adapters.md: b7944bd31fdb5f63894e867d7c1224215d694f11
2026-07-14-provider-routed-llm-adapters.zh.md: 7dcadf2521bab079e328b5f0d0a45185778b3b8d
2026-07-14-provider-routed-llm-adapters.md: 98205d18d07752e0cdba86d7cba80368d45fd816
2026-07-14-provider-routed-llm-adapters.zh.md: c35225a86baf4c2d09732b5940abbc8046d365fb

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@@ -28,7 +28,7 @@ A provider has exactly one adapter owner in a Cordis context. `dsh-llm-deepseek`
### Explicit pi-ai provider profiles
`dsh-llm-pi-ai` takes one non-empty list of provider profiles. Provider names must be unique within the list and present in pi-ai's `getProviders()` result. Each profile contains the provider name plus optional `apiKey`, `baseURL`, headers, reasoning level and budgets, cache retention, transport, timeouts, and retry settings. Credentials are never global: an explicit key applies only to its profile, while an absent key lets pi-ai resolve its standard environment variable, OAuth token, AWS credential chain, Google ADC, or other provider-native ambient authentication. An explicitly empty key is invalid configuration rather than an environment fallback.
`dsh-llm-pi-ai` takes one non-empty list of provider profiles. Provider names must be unique within the list and present in pi-ai's `getProviders()` result. Each profile contains the provider name plus optional `apiKey`, `baseURL`, headers, reasoning level and budgets, cache retention, transport, SDK timeouts, and a Harness stream-idle timeout. Provider retry fields are deliberately absent: the adapter forces pi-ai's `maxRetries` to zero so one `stream()` call makes one visible provider attempt, while `dsh-llm-retry` owns bounded agent-level recovery. Credentials are never global: an explicit key applies only to its profile, while an absent key lets pi-ai resolve its standard environment variable, OAuth token, AWS credential chain, Google ADC, or other provider-native ambient authentication. An explicitly empty key is invalid configuration rather than an environment fallback.
The plugin registers all configured provider names against one `PiAiAdapter` in one all-or-nothing call. A request uses its provider to select the matching profile and finds its model in `getModels(provider)` to obtain the catalog descriptor. An unknown provider fails at plugin load; an unknown model fails before network I/O with `UNKNOWN_MODEL`. The catalog object is never mutated. When a profile supplies `baseURL`, the adapter clones the selected descriptor and overrides only `baseUrl`, so a private endpoint can retain pi-ai's API, capabilities, compatibility flags, context limits, and reasoning map. The private endpoint must implement the selected provider's protocol, and the model id must still exist in the installed pi-ai catalog.
@@ -75,14 +75,14 @@ The on-disk session format remains the pre-release pinned version `0`, with no c
- Provider names are deployment-wide route ownership keys: two providers may use the same model string, but mounting two adapters for one provider fails at load instead of creating fallback order.
- Model selection no longer changes the Cordis plugin graph. Catalog-backed adapters can accept any installed catalog model selected after startup, while the native DeepSeek adapter forwards arbitrary DeepSeek model ids.
- A custom `baseURL` preserves the selected catalog model's protocol and capabilities; it does not make catalog-external model ids valid. Private endpoints must implement that catalog entry's protocol.
- pi-ai credentials and transport knobs are scoped per provider profile. An omitted key delegates to pi-ai ambient authentication, while an explicitly empty key is invalid.
- pi-ai credentials, transport knobs, SDK timeouts, and the five-minute-default `streamIdleTimeoutMs` watchdog are scoped per provider profile. Hidden provider retries are disabled; bounded retries belong to the separately composed agent recovery policy.
- `dsh-llm-pi-ai` rejects stop sequences because pi-ai's common stream API cannot express them; the native DeepSeek adapter retains its stop support.
- Replay state is portable only within the adapter instance that owns both the historical and target providers. Cross-provider and cross-model restoration is an adapter responsibility, and another adapter receives provider-neutral history without the opaque state.
- Current pre-release session JSONL requires provider/model request headers and assistant provenance. Older shapes remain version `0` but are rejected rather than migrated.
## Testing
- Unit coverage exercises registry conflicts, request reconstruction, session validation, profile resolution, option forwarding, native API selection including OpenAI Responses, conversion, replay validation, error mapping, cancellation, content rewrites, and same-instance versus different-instance replay dispatch.
- Unit coverage exercises registry conflicts, request reconstruction, session validation, profile resolution, single-attempt option forwarding, native API selection including OpenAI Responses, conversion, replay validation, error mapping, caller cancellation, idle-timeout transport termination, content rewrites, and same-instance versus different-instance replay dispatch.
- Keyless loop/session tests and ACP snapshots exercise durable provider/model metadata, resume and fork propagation, workflow/subagent overrides, and unchanged user-visible transcripts; the key-gated DeepSeek e2e retains real provider streaming and tool follow-up coverage.
- Public JSDoc, package READMEs, architecture and core-data-structure docs, generated catalogs, examples, session fixtures, and Python SDK pairs use provider/model targets consistently and are checked by the repository documentation and type-equivalence gates.

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@@ -28,7 +28,7 @@ Status: implemented
### 显式 pi-ai 提供方配置
`dsh-llm-pi-ai` 接受一个非空的提供方配置列表。列表内的提供方名称必须唯一,并且存在于 pi-ai 的 `getProviders()` 结果中。每项配置包含提供方名称,以及可选的 `apiKey``baseURL`、headers、推理级别和预算、缓存保留设置、传输方式、超时和重试设置。凭据不设全局值显式密钥仅对所属配置生效未提供密钥时pi-ai 使用标准环境变量、OAuth token、AWS 凭据链、Google ADC 或其他提供方原生环境认证。显式空密钥属于无效配置,不会回退到环境认证。
`dsh-llm-pi-ai` 接受一个非空的提供方配置列表。列表内的提供方名称必须唯一,并且存在于 pi-ai 的 `getProviders()` 结果中。每项配置包含提供方名称,以及可选的 `apiKey``baseURL`、headers、推理级别和预算、缓存保留设置、传输方式、SDK 超时和 Harness 流空闲超时。配置中有意不提供重试字段:适配器强制将 pi-ai 的 `maxRetries` 设为零,使一次 `stream()` 调用只发起一次可见的提供方请求;有界的 agent 层恢复由 `dsh-llm-retry` 负责。凭据不设全局值显式密钥仅对所属配置生效未提供密钥时pi-ai 使用标准环境变量、OAuth token、AWS 凭据链、Google ADC 或其他提供方原生环境认证。显式空密钥属于无效配置,不会回退到环境认证。
插件通过一次全有或全无调用,将所有已配置的提供方名称注册到同一个 `PiAiAdapter`。请求按 provider 选择对应配置,并在 `getModels(provider)` 中查找模型以取得目录描述符。未知提供方会在插件加载时失败;未知模型会在网络 I/O 前以 `UNKNOWN_MODEL` 失败。适配器不会修改目录对象。当配置提供 `baseURL` 时,适配器复制选中的描述符,仅覆盖 `baseUrl`,使私有端点保留 pi-ai 的 API、能力、兼容标志、上下文限制与推理映射。私有端点必须实现所选提供方的协议模型 ID 也仍须存在于已安装的 pi-ai 目录中。
@@ -75,14 +75,14 @@ JSON-RPC 运行时显式接收 provider 与 model。仅当 `deepseek` 提供方
- 提供方名称是部署范围内的路由所有权键:两个提供方可以使用相同的模型字符串,但为同一个提供方挂载两个适配器会在加载时失败,不会形成回退顺序。
- 模型选择不再改变 Cordis 插件图。目录型适配器可以接受启动后选择的任意已安装目录模型,原生 DeepSeek 适配器则会转发任意 DeepSeek 模型 ID。
- 自定义 `baseURL` 会保留所选目录模型的协议与能力,但不会让目录外模型 ID 变为有效。私有端点必须实现该目录项对应的协议。
- pi-ai 凭据传输选项按提供方配置隔离。省略密钥时委托 pi-ai 使用环境认证;显式空密钥无效
- pi-ai 凭据传输选项、SDK 超时,以及默认五分钟的 `streamIdleTimeoutMs` 空闲超时机制均按提供方配置隔离。系统禁用隐藏的提供方重试;有界重试由单独组合的 agent 恢复策略负责
- pi-ai 的通用流 API 无法表达停止序列,因此 `dsh-llm-pi-ai` 会拒绝停止序列;原生 DeepSeek 适配器仍支持停止序列。
- 仅当历史提供方与目标提供方归同一个适配器实例所有时,回放状态才可移植。适配器负责跨提供方和跨模型恢复;其他适配器只接收不含不透明状态的提供方无关历史。
- 当前预发布会话 JSONL 要求请求头包含 provider/model助手消息包含来源信息。旧格式仍使用版本 `0`,但会被拒绝,不执行迁移。
## 测试
- 单元测试覆盖注册表冲突、请求重建、会话验证、配置解析、选项转发、包括 OpenAI Responses 在内的原生 API 选择、转换、回放验证、错误映射、取消、内容重写,以及同一实例与不同实例间的回放分发。
- 单元测试覆盖注册表冲突、请求重建、会话验证、配置解析、单次请求的选项转发、包括 OpenAI Responses 在内的原生 API 选择、转换、回放验证、错误映射、调用方取消、空闲超时导致的传输终止、内容重写,以及同一实例与不同实例间的回放分发。
- 无密钥的 agent loop/会话测试和 ACP 快照覆盖持久化 provider/model 元数据、恢复与 fork 传播、工作流/subagent 覆盖,以及不变的用户可见 transcript文本记录密钥门控的 DeepSeek e2e 测试保留真实提供方的流式输出与工具后续调用覆盖率。
- 公共 JSDoc、package README、架构与核心数据结构文档、生成目录、示例、会话 fixture测试前置数据和 Python SDK 配对文档统一使用 provider/model 目标,并由仓库文档与类型等价门禁校验。

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@@ -2,5 +2,5 @@
# side as of the last confirmed-consistent state. Both languages carry equal authority;
# after editing either side, bring the other along and re-record with:
# pnpm run verify-translation-pairing --write
2026-07-20-error-cause-chain-diagnostics.md: 2d860d0e966158dd9ec12b45f88e3b031e1cb35a
2026-07-20-error-cause-chain-diagnostics.zh.md: 6eac19dd08d50e4662d53889577b5e3ddabaafdd
2026-07-20-error-cause-chain-diagnostics.md: 391e35997bb1bb050dd2ca620920961d77bb1c46
2026-07-20-error-cause-chain-diagnostics.zh.md: 90d6559a9410e8a4e5475db9560a2a177ba7a1a7

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@@ -14,7 +14,7 @@ A TUI run against an unreachable DeepSeek endpoint failed with the single notice
## Decision
- `dsh-llm` exports `errorChain(value)`: renders a thrown value with its full `cause` chain (`outer: inner: …`) and AggregateError members (`msg [m1; m2]`), with circular-cause and hostile-coercion containment. It is a diagnostic-surface renderer only; routing stays on `HarnessError.code`.
- The DeepSeek adapter wraps a pre-response transport failure in `LlmError('NETWORK')` naming the configured `baseURL` and chaining the original `TypeError` as `cause`. An aborted request keeps its `DOMException` so the loop still classifies it as cancellation, not a provider failure.
- The DeepSeek adapter wraps a pre-response transport failure in `LlmError('TRANSPORT')` naming the configured `baseURL` and chaining the original rejection as `cause`. An aborted request becomes `LlmError('ABORTED')`; because the turn signal is already aborted, the loop still classifies the turn as cancellation rather than recovery.
- Every diagnostic seam renders through `errorChain` instead of `error.message`/`String(error)`: the agent-loop's durable `turn/end` error message (`errorData`), its logger warnings, the TUI's `agent/error` notice and startup-failure line, and `dsh-stdio`'s startup-failure log lines. The per-package `renderThrown` copies in `dsh-agent-loop`, `dsh-stdio`, and `dsh-tui` are deleted in favor of the one shared renderer.
- `dsh-stdio` renders failure `turn/end` reasons: `[turn failed <code>] <message>`, `[turn aborted] <reason>`, `[turn rejected] <reason>`, `[turn interrupted by a previous process exit]`, and the output-token-limit notice. Unknown merge-extended kinds fall through as ordinary turn ends.

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@@ -14,7 +14,7 @@ TUI 连接不可达的 DeepSeek 端点时,失败只显示一条 `fetch failed`
## Decision
- `dsh-llm` 导出 `errorChain(value)`:渲染抛出值及其完整 `cause` 链(`outer: inner: …`)与 AggregateError 成员(`msg [m1; m2]`),并容错循环 cause 和恶意强制转换。它只是诊断表面的渲染器;路由仍然基于 `HarnessError.code`
- DeepSeek 适配器把拿到响应之前的传输失败包装成 `LlmError('NETWORK')`,写明配置的 `baseURL` 并把原始 `TypeError` 链为 `cause`。被中止的请求保留其 `DOMException`,使循环仍将归类为取消而非 provider 失败
- DeepSeek 适配器把拿到响应之前的传输失败包装成 `LlmError('TRANSPORT')`,写明配置的 `baseURL` 并把原始拒绝值链为 `cause`。被中止的请求变为 `LlmError('ABORTED')`;由于轮次信号已处于中止状态,循环仍将该轮次归类为取消而非恢复
- 每个诊断接缝改用 `errorChain` 而非 `error.message`/`String(error)`agent-loop 的持久化 `turn/end` 错误消息(`errorData`、其日志警告、TUI 的 `agent/error` 通知与启动失败行、以及 `dsh-stdio` 的启动失败日志行。`dsh-agent-loop``dsh-stdio``dsh-tui` 里各自的 `renderThrown` 副本被删除,统一使用这一个共享渲染器。
- `dsh-stdio` 渲染失败的 `turn/end` reason`[turn failed <code>] <message>``[turn aborted] <reason>``[turn rejected] <reason>``[turn interrupted by a previous process exit]` 以及输出 token 上限通知。未知的 merge 扩展 kind 按普通 turn 结束处理。

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@@ -2,5 +2,5 @@
# side as of the last confirmed-consistent state. Both languages carry equal authority;
# after editing either side, bring the other along and re-record with:
# pnpm run verify-translation-pairing --write
2026-07-19-same-session-goal-round-driver.md: b970ba7f6d136c0442430c3d738cdc66fa5ae6d7
2026-07-19-same-session-goal-round-driver.zh.md: a441ec56223235b489a63f262733e8c26a0f4220
2026-07-19-same-session-goal-round-driver.md: 34d59456b5a8b54c92aba581da0ff22ea045b626
2026-07-19-same-session-goal-round-driver.zh.md: dc2afd1ce18a45964bc1db04121211a9958445f3

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@@ -40,7 +40,7 @@ The driver classifies one closed goal-owned turn as follows:
|---|---|
| durable `completed` | continue while active/armed and under cap |
| cancellation of a reserved/admitted goal round, or its `aborted` result | pause and disarm |
| `error` with code `RATE_LIMIT` | block with code `usage-limited` |
| `error` with code `RATE_LIMIT` or `QUOTA` | block with code `usage-limited` |
| other `error` | block with code `turn-error` |
| `max-tokens` | block with code `max-tokens` |
| non-stale `rejected` | block with code `prompt-rejected` |

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@@ -40,7 +40,7 @@ Status: implemented
|---|---|
| 持久的 `completed` | 目标仍 active/armed 且未到上限时继续 |
| 取消已预留/接纳的目标回合,或该回合产生 `aborted` 结果 | 暂停并解除激活 |
| 代码为 `RATE_LIMIT``error` | 以 `usage-limited` 代码阻塞 |
| 代码为 `RATE_LIMIT``QUOTA``error` | 以 `usage-limited` 代码阻塞 |
| 其他 `error` | 以 `turn-error` 代码阻塞 |
| `max-tokens` | 以 `max-tokens` 代码阻塞 |
| 非过期的 `rejected` | 以 `prompt-rejected` 代码阻塞 |

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@@ -0,0 +1,6 @@
# Bilingual-pair consistency record (docs/i18n/README.md): the git blob hash of each
# side as of the last confirmed-consistent state. Both languages carry equal authority;
# after editing either side, bring the other along and re-record with:
# pnpm run verify-translation-pairing --write
2026-07-20-windows-tui-support.md: 6b728486dd50faac067933ce06f883447aae821f
2026-07-20-windows-tui-support.zh.md: 2b53b05ff6231361d79b4304181dc0e6d8e24e68

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@@ -0,0 +1,33 @@
# Agent Note: Support the TUI on Windows
Status: implemented
English | [中文](2026-07-20-windows-tui-support.zh.md)
## Problem
The full-screen TUI delegates raw input, ANSI rendering, resize events, and terminal restoration to pi-tui's `ProcessTerminal`. That dependency contains a native Windows console path, but the repository's real-process smoke used Python's POSIX-only `pty` and `termios` modules. Skipping that smoke on Windows would leave the supported product path without coverage for startup, input, interaction, failure reporting, or restoration.
The TUI platform contract must follow the runtime shipped to users rather than the portability of one test driver. A platform exclusion is justified only when the product has an unsupported runtime dependency or a demonstrated semantic gap.
## Decision
[`@deepseek-ai/dsh-tui`](../../../../packages/ui/tui/README.md) supports interactive terminals on Windows as well as macOS and Linux. The product continues to use pi-tui's `ProcessTerminal`; on Windows it enables virtual-terminal input after raw mode and avoids the Unix-only `SIGWINCH` refresh. DeepSeek Harness adds no platform rejection or reduced Windows mode.
The real Loader smoke selects a native pseudo-terminal boundary by host. macOS and Linux retain the Python POSIX PTY driver. Windows uses `node-pty` and ConPTY. Both drivers receive the same launch command, environment, terminal dimensions, marker-gated input actions, timeout, expected exit code, and output assertions, and all three smoke scenarios run on every supported platform.
`node-pty` is a test-only dependency of the examples workspace. Its reviewed native install script is explicitly enabled in `pnpm-workspace.yaml`; production TUI packages do not acquire a new dependency or subprocess layer.
## Alternatives considered
- **Declare the TUI unsupported on Windows** — rejected because the pinned terminal runtime implements Windows console input explicitly and the harness has no POSIX-only production dependency. A documentation-only exclusion would discard an existing product path to accommodate a test harness gap.
- **Run the POSIX driver through MSYS, Cygwin, or WSL** — rejected because that would test a compatibility environment rather than the native Windows console path users run.
- **Use `node-pty` on every host** — rejected because the established POSIX driver already provides the macOS and Linux boundary; replacing it would widen the runtime change without improving those hosts. Platform-specific drivers reserve the `node-pty` runtime path for Windows while sharing one scenario contract.
- **Rely on renderer unit tests and semantic terminal snapshots** — rejected because fake terminals do not prove Loader boot, real raw input, process exit, or terminal restoration at the operating-system boundary.
## Consequences
- The Windows artifact lane executes the startup, scripted interaction, resume-failure, and restoration scenarios, and the suite has no supported-platform skip.
- The Windows process proof depends on ConPTY and a pinned `node-pty` release; changing that dependency or its allowed install script requires native-boundary review.
- The two PTY drivers can differ internally, but shared inputs and assertions keep their observable TUI contract aligned.
- Windows support remains bounded by the Node and pi-tui versions shipped by the repository; unsupported historical Windows console environments do not receive a compatibility layer.

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@@ -0,0 +1,33 @@
# Agent Note: 在 Windows 上支持 TUI
Status: implemented
[English](2026-07-20-windows-tui-support.md) | 中文
## 问题
全屏 TUI 将原始输入、ANSI 渲染、终端尺寸变更事件和终端恢复委托给 pi-tui 的 `ProcessTerminal`。该依赖已实现原生 Windows 控制台路径,但仓库的真实进程冒烟测试此前使用 Python 中仅适用于 POSIX 的 `pty``termios` 模块。若在 Windows 上跳过该测试,这条受支持的产品路径便会缺少针对启动、输入、交互、失败报告和终端恢复的测试覆盖率。
TUI 平台契约必须以交付给用户的运行时为准,而不是取决于某个测试驱动程序的可移植性。只有产品存在不受支持的运行时依赖,或已证实存在语义缺口时,排除某个平台才有依据。
## 决策
[`@deepseek-ai/dsh-tui`](../../../../packages/ui/tui/README.md) 在 Windows、macOS 和 Linux 上均支持交互式终端。产品继续使用 pi-tui 的 `ProcessTerminal`;在 Windows 上,它会在进入原始模式后启用虚拟终端输入,并避开仅适用于 Unix 的 `SIGWINCH` 刷新。DeepSeek Harness 不增加平台拒绝逻辑,也不采用功能受限的 Windows 模式。
真实 Loader 冒烟测试根据宿主选择原生伪终端边界。macOS 和 Linux 继续使用 Python POSIX PTY 驱动Windows 则使用 `node-pty` 和 ConPTY。两种驱动接收相同的启动命令、环境、终端尺寸、以标记为触发条件的输入动作、超时、预期退出码和输出断言3 个冒烟场景都会在每个受支持平台上运行。
`node-pty` 是 examples 工作区仅供测试使用的依赖。该依赖经评审的原生安装脚本在 `pnpm-workspace.yaml` 中显式启用;生产 TUI 包package不会新增依赖或子进程层。
## 曾考虑的替代方案
- **声明 TUI 不支持 Windows**:不予采纳,因为固定版本的终端运行时已显式实现 Windows 控制台输入,且 harness 没有仅适用于 POSIX 的生产依赖。仅通过文档排除 Windows等于为迁就测试 harness 的缺口而舍弃现有产品路径。
- **通过 MSYS、Cygwin 或 WSL 运行 POSIX 驱动**:不予采纳,因为这会测试兼容环境,而不是用户实际运行的原生 Windows 控制台路径。
- **在所有宿主上使用 `node-pty`**:不予采纳,因为现有 POSIX 驱动已经为 macOS 和 Linux 提供所需边界;替换该驱动会扩大运行时变更范围,却不会给这两个宿主带来改进。按平台选择驱动,仅在 Windows 上启用 `node-pty` 运行时路径,同时共享同一份场景契约。
- **依赖渲染器单元测试和语义终端快照**:不予采纳,因为模拟终端无法证明 Loader 启动、真实原始输入、进程退出或操作系统边界上的终端恢复。
## 后果
- Windows 产物 lane 执行启动、脚本化交互、配置恢复失败和终端恢复场景,这套测试不会在任何受支持平台上跳过。
- Windows 进程级验证依赖 ConPTY 和固定版本的 `node-pty`;变更该依赖或允许执行的安装脚本时,必须进行原生边界评审。
- 两种 PTY 驱动的内部实现可以不同,但共享的输入和断言会使其可观测 TUI 契约保持一致。
- Windows 支持范围以仓库交付的 Node 和 pi-tui 版本为界;不受支持的旧版 Windows 控制台环境不会获得兼容层。

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@@ -87,7 +87,7 @@ forever:
agent/request (config only) -> log request/header -> llm/stream (frozen)
on final adapter-path or terminal in-band failure:
'step/end'
agent/request-error(original error, consecutive retry attempt, signal)
agent/request-error(original error, failure facts, immutable prior failures, signal)
retry in the next numbered step or preserve the original error
otherwise:
'assistant/chunk'
@@ -112,11 +112,11 @@ Each step assembles ordered prompt sections, tool schemas, and `{{name}}` variab
Tool-time context—including async `agent.inject()` notices and post-tool `additionalContexts`—settles after results. Steering drains; before signal closure, `agent/post-step` observes durable output, results, context, and steering. Leftovers queue. Terminal `agent/turn-stop` runs after continuation and steering folding, remains authoritative through close/flush, and discards later steering while preserving queued prompts.
Optional pruning precedes summaries; retry requires durable surface progress; cancellation wins ([decision](../.agents/notes/implemented/architecture/2026-07-10-after-call-compaction-pressure-and-overflow-recovery.md)).
Pruning precedes summaries; overflow retries require durable progress. Bounded transient retries compose on `agent/request-error`; cancellation wins ([compaction](../.agents/notes/implemented/architecture/2026-07-10-after-call-compaction-pressure-and-overflow-recovery.md), [retry](../.agents/notes/implemented/architecture/2026-06-21-bounded-llm-request-recovery.md)).
### Failure Boundaries
The turn is the containment boundary. Final adapter-path and terminal in-band failures close the step before `agent/request-error`; retry opens a numbered step; otherwise, the provider error survives. Attempts reset on success.
The turn is the containment boundary. Adapter failures close the step, entering `agent/request-error` with the exact `Error`, `LlmFailure`, and retry history. Retry opens a numbered step; success clears history; exhaustion stores the failure on `turn/end`. Failed chunks commit no message or tool.
Other failures use `agent/error`. Cancellation beats recovery; undispatched calls get synthetic `ABORTED` results. Effective `cancel()` emits `agent/cancel-requested` before queue clearing or abort; observers cannot veto it, and idle calls emit nothing. Disposal awaits quiescence.
@@ -144,7 +144,7 @@ Durability is a plugin concern. Backends buffer synchronous `session/event` noti
Messages contain typed blocks (`text`, `reasoning`, `tool-call`, `tool-result`) derived from merge-extensible `ContentBlockMap`; the same pattern types `MessageSource`, `FinishReason`, `TurnTrigger`, and `TurnEndReason`. New block types coordinate adapters, UI bridges, compaction pricing, token metering, and persistence as one repo-wide contract; replay measurement types live in [token-meter.md](core-data-structures/token-meter.md).
Streaming uses raw chunks (`block-start` through `finish`) and `BlockAssembler`. The loop logs and assembles chunks, storing provider/model provenance plus replay state. An `LlmAdapter` implements `stream()`, registers provider routes, and may expose selector metadata; it resolves and validates model ids. Replay state reaches targets only when both routes map to one adapter instance, which owns validation and conversion. The contract lives in [llm-streaming.md](core-data-structures/llm-streaming.md).
Streaming uses raw chunks and `BlockAssembler`. One `LlmAdapter.stream()` is one provider attempt; adapters report facts, while recovery policy lives on `agent/request-error`. The loop logs chunks and successful provenance/replay state. Remote adapters stop stalled transport with per-read idle watchdogs. Replay state reaches targets only when routes share an adapter instance ([contract](core-data-structures/llm-streaming.md)).
## Extension And Composition

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@@ -27,7 +27,7 @@ export interface AcpConfig {
Depends on: `Stream` (`@agentclientprotocol/sdk`)
Source: [`packages/ui/acp/src/index.ts:246`](../packages/ui/acp/src/index.ts)
Source: [`packages/ui/acp/src/index.ts:247`](../packages/ui/acp/src/index.ts)
## `@deepseek-ai/dsh-acp-demo`
@@ -68,6 +68,8 @@ export interface Config {
toolBash?: NonNullable<agentCore.Config['toolBash']>
/** Generic background-task controls forwarded through agent-core; set false to omit their tool surface. */
toolTasks?: NonNullable<agentCore.Config['toolTasks']>
/** Bounded transient model-request retry policy forwarded through agent-core. */
llmRetry?: NonNullable<agentCore.Config['llmRetry']>
}
```
@@ -144,6 +146,8 @@ export interface Config {
toolBash?: toolBash.Config
/** Generic background-task controls; set false to keep the task service without model-facing task tools. */
toolTasks?: toolTasks.Config | false
/** Bounded transient model-request retry policy. */
llmRetry?: llmRetry.Config
}
/** Skill bundle config forwarded to the registry, local provider, and model-facing consumer. */
@@ -159,9 +163,9 @@ export interface SkillConfig {
}
```
Depends on: [`AgentLoopConfig`](#deepseek-aidsh-agent-loop) · [`SkillLocal`](../packages/skill/skill-local/src/index.ts) · [`SkillRegistryConfig`](#deepseek-aidsh-skill) · [`SystemPromptConfig`](#deepseek-aidsh-system-prompt) · [`toolBash`](../packages/bash/tool-bash/src/index.ts) · [`ToolsConfig`](#deepseek-aidsh-tools) · [`toolSkill`](../packages/skill/tool-skill/src/index.ts) · [`toolTasks`](../packages/tasks/tool-tasks/src/index.ts) · [`workspaceContext`](../packages/context/workspace-context/src/index.ts)
Depends on: [`AgentLoopConfig`](#deepseek-aidsh-agent-loop) · [`llmRetry`](../packages/llm/llm-retry/src/index.ts) · [`SkillLocal`](../packages/skill/skill-local/src/index.ts) · [`SkillRegistryConfig`](#deepseek-aidsh-skill) · [`SystemPromptConfig`](#deepseek-aidsh-system-prompt) · [`toolBash`](../packages/bash/tool-bash/src/index.ts) · [`ToolsConfig`](#deepseek-aidsh-tools) · [`toolSkill`](../packages/skill/tool-skill/src/index.ts) · [`toolTasks`](../packages/tasks/tool-tasks/src/index.ts) · [`workspaceContext`](../packages/context/workspace-context/src/index.ts)
Source: [`packages/examples/agent-spine-demo/src/index.ts:59`](../packages/examples/agent-spine-demo/src/index.ts)
Source: [`packages/examples/agent-spine-demo/src/index.ts:60`](../packages/examples/agent-spine-demo/src/index.ts)
## `@deepseek-ai/dsh-bash-local`
@@ -234,6 +238,8 @@ export interface Config {
toolBash?: NonNullable<agentCore.Config['toolBash']>
/** Generic background-task control-tool config forwarded through agent-spine-demo. */
toolTasks?: NonNullable<agentCore.Config['toolTasks']>
/** Bounded transient model-request retry policy forwarded through agent-spine-demo. */
llmRetry?: NonNullable<agentCore.Config['llmRetry']>
/** Controls automatic AGENTS.md/CLAUDE.md loading; configure a byte budget or set `false`. */
workspaceContext: agentCore.Config['workspaceContext']
}
@@ -472,6 +478,8 @@ export interface Config {
reasoningEffort?: 'high' | 'max'
/** Advisory models shown by discovery consumers; defaults to V4 Flash and V4 Pro. */
models?: DeepSeekCatalogModel[]
/** Maximum provider idle time while one stream read is outstanding (default five minutes). */
streamIdleTimeoutMs?: number
}
/** One optional model entry advertised by the hand-written adapter. */
@@ -485,7 +493,7 @@ export interface DeepSeekCatalogModel {
}
```
Source: [`packages/llm/llm-deepseek/src/index.ts:33`](../packages/llm/llm-deepseek/src/index.ts)
Source: [`packages/llm/llm-deepseek/src/index.ts:34`](../packages/llm/llm-deepseek/src/index.ts)
## `@deepseek-ai/dsh-llm-pi-ai`
@@ -520,16 +528,14 @@ export interface PiAiProviderProfile {
timeoutMs?: number
/** WebSocket connection timeout in milliseconds. */
websocketConnectTimeoutMs?: number
/** Provider SDK retry count. */
maxRetries?: number
/** Maximum provider-requested retry delay in milliseconds. */
maxRetryDelayMs?: number
/** Maximum provider idle time while one stream read is outstanding. */
streamIdleTimeoutMs?: number
}
```
Depends on: `CacheRetention` (`@earendil-works/pi-ai`) · `ThinkingBudgets` (`@earendil-works/pi-ai`) · `ThinkingLevel` (`@earendil-works/pi-ai`) · `Transport` (`@earendil-works/pi-ai`)
Source: [`packages/llm/llm-pi-ai/src/config.ts:40`](../packages/llm/llm-pi-ai/src/config.ts)
Source: [`packages/llm/llm-pi-ai/src/config.ts:48`](../packages/llm/llm-pi-ai/src/config.ts)
## `@deepseek-ai/dsh-llm-replay`
@@ -575,6 +581,28 @@ export interface ReplayModelConfig {
Source: [`packages/support/llm-replay/src/index.ts:375`](../packages/support/llm-replay/src/index.ts)
## `@deepseek-ai/dsh-llm-retry`
Requires: `agents`
```ts config-catalog
/** Deployment-owned limits and classification for transient request recovery. */
export interface Config {
/** Maximum transient retries after the first request (default 2). */
maxTransientRetries?: number
/** Initial local exponential-backoff delay in milliseconds (default 500). */
initialDelayMs?: number
/** Maximum accepted or locally scheduled delay in milliseconds (default 10000). */
maxDelayMs?: number
/** Symmetric random multiplier range around one (default 0.1). */
jitterRatio?: number
/** Stable failure codes eligible for this policy. */
retryableCodes?: string[]
}
```
Source: [`packages/llm/llm-retry/src/index.ts:39`](../packages/llm/llm-retry/src/index.ts)
## `@deepseek-ai/dsh-mcp-client`
Requires: `tools`
@@ -1277,7 +1305,7 @@ export interface TuiConfig {
}
```
Source: [`packages/ui/tui/src/index.ts:102`](../packages/ui/tui/src/index.ts)
Source: [`packages/ui/tui/src/index.ts:103`](../packages/ui/tui/src/index.ts)
## `@deepseek-ai/dsh-tui-demo`

View File

@@ -96,7 +96,7 @@ A step or turn errored. The loop reports a failure here (plus the logger) even w
Types: [Agent](../core-data-structures/core.md) · [Scoped](../core-data-structures/scope.md)
Source: [`packages/core/agent/src/types.ts:327`](../../packages/core/agent/src/types.ts)
Source: [`packages/core/agent/src/types.ts:328`](../../packages/core/agent/src/types.ts)
### `agent/post-step` — serial
@@ -222,17 +222,18 @@ Recover a model-request failure after its failed step has closed. `retry` opens
* @param turn - the open turn number.
* @param step - the failed step number.
* @param error - the original model-request failure.
* @param retryAttempt - zero-based number of prior recovery retries.
* @param failure - serializable facts normalized at the final adapter boundary.
* @param priorFailures - immutable failures that already authorized another request in this consecutive sequence.
* @param signal - the turn abort signal.
* Scope-filtered dispatch (`@deepseek-ai/dsh-scope`): agent-scoped listeners receive only that agent.
* @mode waterfall
*/
'agent/request-error'(this: Scoped<Agent>, agent: Agent, turn: number, step: number, error: RequestError, retryAttempt: number, signal: AbortSignal, next: () => Promise<RequestErrorDecision>): Promise<RequestErrorDecision>
'agent/request-error'(this: Scoped<Agent>, agent: Agent, turn: number, step: number, error: RequestError, failure: LlmFailure, priorFailures: readonly LlmFailure[], signal: AbortSignal, next: () => Promise<RequestErrorDecision>): Promise<RequestErrorDecision>
```
Types: [Agent](../core-data-structures/core.md) · [RequestError](../core-data-structures/core.md) · [RequestErrorDecision](../core-data-structures/core.md) · [Scoped](../core-data-structures/scope.md)
Types: [Agent](../core-data-structures/core.md) · [LlmFailure](../core-data-structures/llm-streaming.md) · [RequestError](../core-data-structures/core.md) · [RequestErrorDecision](../core-data-structures/core.md) · [Scoped](../core-data-structures/scope.md)
Source: [`packages/core/agent/src/types.ts:294`](../../packages/core/agent/src/types.ts)
Source: [`packages/core/agent/src/types.ts:295`](../../packages/core/agent/src/types.ts)
### `agent/session-prefix` — waterfall
@@ -343,7 +344,7 @@ Override whether the turn continues. The default continues after tool calls or s
Types: [Agent](../core-data-structures/core.md) · [ContinuationDecision](../core-data-structures/core.md) · [Scoped](../core-data-structures/scope.md)
Source: [`packages/core/agent/src/types.ts:304`](../../packages/core/agent/src/types.ts)
Source: [`packages/core/agent/src/types.ts:305`](../../packages/core/agent/src/types.ts)
### `agent/turn-stop` — serial
@@ -364,7 +365,7 @@ Monotonic terminal-stop checkpoint after continuation and steering are folded; a
Types: [Agent](../core-data-structures/core.md) · [ContinuationStop](../core-data-structures/core.md) · [Scoped](../core-data-structures/scope.md)
Source: [`packages/core/agent/src/types.ts:314`](../../packages/core/agent/src/types.ts)
Source: [`packages/core/agent/src/types.ts:315`](../../packages/core/agent/src/types.ts)
## `agent-loop/*`
@@ -535,7 +536,7 @@ Waterfall around every streaming model call (retry, replay, routing). Bound to t
Types: [GenerateOptions](../core-data-structures/core.md) · [LlmService](../core-data-structures/llm-streaming.md) · [StreamChunk](../core-data-structures/llm-streaming.md)
Source: [`packages/llm/llm/src/index.ts:43`](../../packages/llm/llm/src/index.ts)
Source: [`packages/llm/llm/src/index.ts:44`](../../packages/llm/llm/src/index.ts)
## `session/*`

View File

@@ -659,7 +659,7 @@ stream(options: GenerateOptions): AsyncIterable<StreamChunk>
Types: [GenerateOptions](../core-data-structures/core.md) · [LlmAdapter](../core-data-structures/llm-streaming.md) · [LlmModelInfo](../core-data-structures/core.md) · [LlmProviderInfo](../core-data-structures/core.md) · [StreamChunk](../core-data-structures/llm-streaming.md)
Source: [`packages/llm/llm/src/index.ts:97`](../../packages/llm/llm/src/index.ts)
Source: [`packages/llm/llm/src/index.ts:137`](../../packages/llm/llm/src/index.ts)
## `ctx.permission` — `PermissionService`

View File

@@ -226,7 +226,7 @@ interface GenerateOptions {
}
```
Why a model response stopped is a merge-extensible reason:
Why a model response stopped is a merge-extensible reason. Terminal provider failures carry the streaming contract's [`LlmFailure`](llm-streaming.md#llmfailure):
```ts type-equiv
/**
@@ -237,8 +237,8 @@ interface FinishReasonMap {
'stop': { kind: 'stop' }
'tool-calls': { kind: 'tool-calls' }
'max-tokens': { kind: 'max-tokens' }
'aborted': { kind: 'aborted' }
'error': { kind: 'error'; message: string; code?: string }
'aborted': { kind: 'aborted'; failure: LlmFailure }
'error': { kind: 'error'; failure: LlmFailure }
}
```
@@ -450,14 +450,14 @@ type ContinuationDecision =
| { action: 'continue'; reason?: { content: ContentBlock[]; source: MessageSource } }
```
`agent/request-error` receives the original `RequestError`, whose optional provider-neutral `code` supports stable routing without message parsing:
`agent/request-error` receives the exact original `RequestError` beside its immutable `LlmFailure`, an immutable list of failures that already authorized another request in the consecutive sequence, the turn signal, and `next()`. Recovery plugins route on `failure.code`, not the live error's message; each policy counts only its own codes, and a successful request clears the history:
```ts type-equiv
/** Model-request failure with an optional machine-routable provider code. */
type RequestError = Error & { code?: string }
```
It returns a `RequestErrorDecision`; `retry` opens a new numbered step after the recovery listener's durable mutation, while `fail` preserves that error:
It returns a `RequestErrorDecision`; `retry` opens a new numbered step after the recovery listener's durable mutation, while `fail` retains the structured failure on `turn/end`:
```ts type-equiv
/** Failed-request recovery decision; `retry` opens another numbered step while listeners delegate by calling `next()`. */

View File

@@ -31,18 +31,40 @@ type StreamChunk =
}
```
## `LlmFailure`
Every thrown or in-band final-adapter failure normalizes to one serializable provider-neutral payload. `providerRetryAfterMs` is a validated positive delay requested by the provider, not a retry decision; `ProviderRequestId` is an opaque branded string for diagnostics.
```ts type-equiv
/** Serializable provider-boundary facts; policy decides whether they are retryable. */
interface LlmFailure {
/** Human-readable provider or transport failure. */
readonly message: string
/** Stable provider-neutral machine-routing code. */
readonly code: string
/** HTTP status observed at the provider boundary, when available. */
readonly status?: number
/** Provider-requested delay in milliseconds, when valid and available. */
readonly providerRetryAfterMs?: number
/** Opaque provider-issued request identifier for diagnostics. */
readonly requestId?: ProviderRequestId
}
```
## The adapter contract
Every adapter MUST obey these, and every consumer may rely on them:
- **`usage` before `finish`, nothing after `finish`.** Defer both to the provider's end-of-stream marker so a trailing usage-only chunk can't violate the ordering.
- **Tool-call `arguments` stay raw JSON strings end-to-end.** Partial fragments stream via `argumentsDelta`; a provider that hands back parsed objects re-stringifies at `block-end`.
- **Two sanctioned error paths.** A failure may either THROW from `stream()` (transport/protocol errors) **or** end the stream with `finish {kind:'error'|'aborted'}` (provider in-band errors, for adapters that can't throw mid-stream). Consumers must handle *both*. The agent loop closes the failed step and offers either form to `agent/request-error`; absent recovery it becomes a turn error, and no normal completed assistant message is logged for that request.
- **Two sanctioned error paths, one fact shape.** A failure may either THROW from `stream()` (transport/protocol errors) **or** end the stream with `finish {kind:'error'|'aborted', failure}` (provider in-band errors, for adapters that can't throw mid-stream). `LlmError.failure` carries the same `LlmFailure`. The final adapter boundary preserves the exact thrown `Error` object and associates immutable facts with that call; the agent loop closes the failed step and offers the error, facts, and immutable prior-retried facts to `agent/request-error`. Absent recovery the structured failure becomes the turn error, and no normal assistant message or tool side effect is committed for that attempt.
- **One adapter call is one provider attempt.** Adapters disable library retries. Agent-level recovery opens another durable numbered step; direct `ctx.llm.stream()` callers remain single-attempt.
- **Provider stalls are bounded at the transport.** Both shipping remote adapters expose positive finite `streamIdleTimeoutMs` with a five-minute default. The watchdog arms only while iterator `next()` is outstanding, uses one stable signal for the whole request, maps its own expiry to `TIMEOUT`, and keeps an earlier caller abort as `ABORTED`.
- **Context overflow has one canonical code.** Both DeepSeek adapters classify explicit provider detail through `isContextWindowExceededError()` and surface `CONTEXT_WINDOW_EXCEEDED`, whether the failure arrives as a thrown HTTP `LlmError` or an in-band finish error. Consumers route on the code, never provider text.
- **Every provider HTTP request carries the app-attribution header.** Adapters send `attributionHeaders()` (below) - the `User-Agent` baseline - and prove it with a wire-level test (mock server asserting the received header, or the library's header hook for a library-backed adapter).
- **Replay state is adapter-owned.** A successful `finish` may carry lossless-JSON state needed to reconstruct a native provider response. The loop stores it with the assembled assistant message unless an `agent/step-result` listener rewrote the content. On a later request, `LlmService` passes the state only when the historical provider and target provider are currently registered to the exact same adapter instance. That adapter validates the state and owns any cross-model or cross-provider conversion; other adapters receive the provider-neutral content and provenance without the private state.
This contract was pinned down by two deliberately independent implementations: `dsh-llm-deepseek` (hand-rolled fetch/SSE) and `dsh-llm-pi-ai` (a generic multi-provider adapter through `@earendil-works/pi-ai`). The library-backed adapter cannot throw mid-stream, so it exercises the finish-chunk error path the hand-rolled one might not.
This contract is pinned down by two deliberately independent implementations: `dsh-llm-deepseek` (hand-rolled fetch/SSE) and `dsh-llm-pi-ai` (a generic multi-provider adapter through `@earendil-works/pi-ai`). The library-backed adapter exercises the finish-chunk error path, while transport-boundary tests prove each idle watchdog stops its actual request.
## `AppIdentity` — app attribution

View File

@@ -430,7 +430,7 @@ declare class Session {
- `context/message` → a user-role message carrying its `content` verbatim at its chronological position. Optional JSON `meta` remains in the event log and is never rendered.
- `steering/message` → a user-role message carrying its content verbatim at its chronological position.
Everything else (`turn/*`, `step/*`) is structural and does not project into a message. Token usage is observed on `assistant/message.usage` (the step that produced it); an operational error's step number is on `turn/end.reason` for `kind: 'error'`. Because this unreleased format intentionally has no compatibility promise, seed/load validation rejects request headers without provider+model and assistant messages without provider/model provenance instead of guessing a route for historical data.
Everything else (`turn/*`, `step/*`, plugin-owned `llm/retry`) is structural and does not project into a message. Token accounting reads per-step `assistant/chunk { type: 'usage' }` records and treats `assistant/message.usage` as the committed-step fallback when no usage chunk exists; failed model-request attempts have no assistant message, so their usage chunk is the durable accounting record. An operational error's step number is on `turn/end.reason` for `kind: 'error'`, with normalized `LlmFailure` facts for a final model-request failure and message/code for other live errors. Because this unreleased format intentionally has no compatibility promise, seed/load validation rejects request headers without provider+model and assistant messages without provider/model provenance instead of guessing a route for historical data.
## Live-session fork API
@@ -474,9 +474,13 @@ interface TurnEndReasonMap {
* The turn failed: a step threw or the model reported a failure. `step` is the
* step number the failure occurred on (the operational error's location — the
* single durable record of an in-turn failure; live diagnostics also fire via
* `agent/error`). `code` is the error's code when one was attached.
* `agent/error`). Final model-request failures retain their normalized facts
* as one `failure`; other turn failures retain their live Error message/code.
*/
error: { kind: 'error'; step: number; message: string; code?: string }
error: { kind: 'error'; step: number } & (
| { failure: LlmFailure; message?: never; code?: never }
| { message: string; code?: string; failure?: never }
)
disposed: { kind: 'disposed' }
/** At least one step reached its output-token ceiling, even if a plugin continued the turn. */
'max-tokens': { kind: 'max-tokens' }

View File

@@ -11,26 +11,26 @@ This matrix shows which packages dispatch each harness-owned event and which pac
| `agent/cancel-requested` | `emit` | [`packages/core/agent/src/types.ts:191`](../packages/core/agent/src/types.ts) | [`agent-loop`](../packages/core/agent-loop) (`emit`) | [`goal-session`](../packages/goal/goal-session) |
| `agent/created` | `emit` | [`packages/core/agent/src/types.ts:153`](../packages/core/agent/src/types.ts) | [`agent`](../packages/core/agent) (`events.dispatch`) | [`goal-session`](../packages/goal/goal-session), [`tui`](../packages/ui/tui) |
| `agent/disposed` | `emit` | [`packages/core/agent/src/types.ts:162`](../packages/core/agent/src/types.ts) | [`agent`](../packages/core/agent) (`events.dispatch`) | [`agent-loop`](../packages/core/agent-loop), [`goal-session`](../packages/goal/goal-session), [`tui`](../packages/ui/tui) |
| `agent/error` | `emit` | [`packages/core/agent/src/types.ts:327`](../packages/core/agent/src/types.ts) | [`agent-loop`](../packages/core/agent-loop) (`emit`) | [`goal-session`](../packages/goal/goal-session), [`tui`](../packages/ui/tui) |
| `agent/error` | `emit` | [`packages/core/agent/src/types.ts:328`](../packages/core/agent/src/types.ts) | [`agent-loop`](../packages/core/agent-loop) (`emit`) | [`goal-session`](../packages/goal/goal-session), [`tui`](../packages/ui/tui) |
| `agent/post-step` | `serial` | [`packages/core/agent/src/types.ts:280`](../packages/core/agent/src/types.ts) | [`agent-loop`](../packages/core/agent-loop) (`serial`) | [`compact-basic`](../packages/compact/compact-basic) |
| `agent/pre-step` | `serial` | [`packages/core/agent/src/types.ts:220`](../packages/core/agent/src/types.ts) | [`agent-loop`](../packages/core/agent-loop) (`serial`) | [`time-context`](../packages/context/time-context), [`user-approval`](../packages/ui/user-approval) |
| `agent/prompt-submit` | `waterfall` | [`packages/core/agent/src/types.ts:230`](../packages/core/agent/src/types.ts) | [`agent-loop`](../packages/core/agent-loop) (`waterfall`) | [`acp`](../packages/ui/acp), [`goal-session`](../packages/goal/goal-session), [`hooks-claude`](../packages/hooks/hooks-claude), [`hooks-codex`](../packages/hooks/hooks-codex), [`repeat-tool-guard`](../packages/guard/repeat-tool-guard) |
| `agent/queued` | `emit` | [`packages/core/agent/src/types.ts:181`](../packages/core/agent/src/types.ts) | [`agent-loop`](../packages/core/agent-loop) (`emit`) | [`goal-session`](../packages/goal/goal-session) |
| `agent/request` | `waterfall` | [`packages/core/agent/src/types.ts:242`](../packages/core/agent/src/types.ts) | [`agent-loop`](../packages/core/agent-loop) (`waterfall`) | [`acp`](../packages/ui/acp) |
| `agent/request-error` | `waterfall` | [`packages/core/agent/src/types.ts:294`](../packages/core/agent/src/types.ts) | [`agent-loop`](../packages/core/agent-loop) (`waterfall`) | [`compact-basic`](../packages/compact/compact-basic) |
| `agent/request-error` | `waterfall` | [`packages/core/agent/src/types.ts:295`](../packages/core/agent/src/types.ts) | [`agent-loop`](../packages/core/agent-loop) (`waterfall`) | [`compact-basic`](../packages/compact/compact-basic), [`llm-retry`](../packages/llm/llm-retry) |
| `agent/session-prefix` | `waterfall` | [`packages/core/agent/src/types.ts:257`](../packages/core/agent/src/types.ts) | [`agent-loop`](../packages/core/agent-loop) (`waterfall`) | [`tool-skill`](../packages/skill/tool-skill), [`workspace-context`](../packages/context/workspace-context) |
| `agent/session-start` | `emit` | [`packages/core/agent/src/types.ts:204`](../packages/core/agent/src/types.ts) | [`agent-loop`](../packages/core/agent-loop) (`emit`) | [`goal`](../packages/goal/goal), [`goal-session`](../packages/goal/goal-session), [`hooks-claude`](../packages/hooks/hooks-claude), [`hooks-codex`](../packages/hooks/hooks-codex) |
| `agent/status` | `emit` | [`packages/core/agent/src/types.ts:171`](../packages/core/agent/src/types.ts) | [`agent-loop`](../packages/core/agent-loop) (`emit`) | [`goal-session`](../packages/goal/goal-session), [`invariants`](../packages/support/invariants), [`tui`](../packages/ui/tui) |
| `agent/step-result` | `waterfall` | [`packages/core/agent/src/types.ts:268`](../packages/core/agent/src/types.ts) | [`agent-loop`](../packages/core/agent-loop) (`waterfall`) | - |
| `agent/turn-continuation` | `waterfall` | [`packages/core/agent/src/types.ts:304`](../packages/core/agent/src/types.ts) | [`agent-loop`](../packages/core/agent-loop) (`waterfall`) | [`hooks-claude`](../packages/hooks/hooks-claude), [`hooks-codex`](../packages/hooks/hooks-codex) |
| `agent/turn-stop` | `serial` | [`packages/core/agent/src/types.ts:314`](../packages/core/agent/src/types.ts) | [`agent-loop`](../packages/core/agent-loop) (`serial`) | [`subagent-inprocess`](../packages/subagent/subagent-inprocess), [`tool-goal`](../packages/goal/tool-goal) |
| `agent/turn-continuation` | `waterfall` | [`packages/core/agent/src/types.ts:305`](../packages/core/agent/src/types.ts) | [`agent-loop`](../packages/core/agent-loop) (`waterfall`) | [`hooks-claude`](../packages/hooks/hooks-claude), [`hooks-codex`](../packages/hooks/hooks-codex) |
| `agent/turn-stop` | `serial` | [`packages/core/agent/src/types.ts:315`](../packages/core/agent/src/types.ts) | [`agent-loop`](../packages/core/agent-loop) (`serial`) | [`subagent-inprocess`](../packages/subagent/subagent-inprocess), [`tool-goal`](../packages/goal/tool-goal) |
| `approval/request` | `waterfall` | [`packages/ui/user-approval/src/index.ts:31`](../packages/ui/user-approval/src/index.ts) | [`user-approval`](../packages/ui/user-approval) (`waterfall`) | [`acp`](../packages/ui/acp) |
| `commands/change` | `emit` | [`packages/ui/commands/src/index.ts:83`](../packages/ui/commands/src/index.ts) | [`commands`](../packages/ui/commands) (`events.dispatch`) | [`acp`](../packages/ui/acp), [`tui`](../packages/ui/tui) |
| `fs/edit-intent` | `waterfall` | [`packages/fs/fs/src/index.ts:62`](../packages/fs/fs/src/index.ts) | [`tool-fs`](../packages/fs/tool-fs) (`waterfall`) | [`fs-policy`](../packages/fs/fs-policy) |
| `fs/observed` | `emit` | [`packages/fs/fs/src/index.ts:71`](../packages/fs/fs/src/index.ts) | [`tool-fs`](../packages/fs/tool-fs) (`emit`) | [`fs-policy`](../packages/fs/fs-policy) |
| `fs/write-intent` | `waterfall` | [`packages/fs/fs/src/index.ts:54`](../packages/fs/fs/src/index.ts) | [`tool-fs`](../packages/fs/tool-fs) (`waterfall`) | [`fs-policy`](../packages/fs/fs-policy) |
| `goal/changed` | `emit` | [`packages/goal/goal/src/types.ts:167`](../packages/goal/goal/src/types.ts) | [`goal`](../packages/goal/goal) (`emit`) | [`goal-session`](../packages/goal/goal-session) |
| `llm/stream` | `waterfall` | [`packages/llm/llm/src/index.ts:43`](../packages/llm/llm/src/index.ts) | [`llm`](../packages/llm/llm) (`waterfall`) | [`invariants`](../packages/support/invariants), [`llm-replay`](../packages/support/llm-replay) |
| `llm/stream` | `waterfall` | [`packages/llm/llm/src/index.ts:44`](../packages/llm/llm/src/index.ts) | [`llm`](../packages/llm/llm) (`waterfall`) | [`invariants`](../packages/support/invariants), [`llm-replay`](../packages/support/llm-replay) |
| `session/created` | `emit` | [`packages/core/session/src/index.ts:47`](../packages/core/session/src/index.ts) | [`session`](../packages/core/session) (`events.dispatch`) | [`invariants`](../packages/support/invariants), [`jsonrpc`](../packages/ui/jsonrpc), [`session-persistence`](../packages/session-persistence/session-persistence) |
| `session/disposed` | `emit` | [`packages/core/session/src/index.ts:57`](../packages/core/session/src/index.ts) | [`session`](../packages/core/session) (`events.dispatch`) | [`agent-loop`](../packages/core/agent-loop), [`session-persistence`](../packages/session-persistence/session-persistence) |
| `session/event` | `emit` | [`packages/core/session/src/index.ts:69`](../packages/core/session/src/index.ts) | [`session`](../packages/core/session) (`events.dispatch`) | [`acp`](../packages/ui/acp), [`cli-demo`](../packages/examples/cli-demo), [`goal-session`](../packages/goal/goal-session), [`invariants`](../packages/support/invariants), [`jsonrpc`](../packages/ui/jsonrpc), [`session-persistence`](../packages/session-persistence/session-persistence), [`token-meter`](../packages/llm/token-meter), [`tui`](../packages/ui/tui), [`workspace-context`](../packages/context/workspace-context) |

View File

@@ -18,6 +18,7 @@ flowchart TD
pkg_llm["llm"]
pkg_llm_deepseek["llm-deepseek"]
pkg_llm_pi_ai["llm-pi-ai"]
pkg_llm_retry["llm-retry"]
pkg_token_meter["token-meter"]
end
subgraph group_core["packages/core"]
@@ -165,7 +166,9 @@ flowchart TD
pkg_scripts --> pkg_app_boot
pkg_telemetry --> pkg_brand
pkg_llm_deepseek --> pkg_llm
pkg_llm_deepseek --> pkg_timeout
pkg_llm_pi_ai --> pkg_llm
pkg_llm_pi_ai --> pkg_timeout
pkg_session --> pkg_brand
pkg_session --> pkg_llm
pkg_session --> pkg_scope
@@ -203,6 +206,10 @@ flowchart TD
pkg_sandbox_local --> pkg_sandbox
pkg_sandbox_policy --> pkg_sandbox
pkg_sandbox_policy --> pkg_session
pkg_llm_retry --> pkg_agent
pkg_llm_retry --> pkg_llm
pkg_llm_retry --> pkg_session
pkg_llm_retry --> pkg_timeout
pkg_goal --> pkg_agent
pkg_goal --> pkg_brand
pkg_goal --> pkg_llm
@@ -359,6 +366,7 @@ flowchart TD
pkg_acp --> pkg_bash
pkg_acp --> pkg_commands
pkg_acp --> pkg_llm
pkg_acp --> pkg_llm_retry
pkg_acp --> pkg_permission
pkg_acp --> pkg_sandbox
pkg_acp --> pkg_session
@@ -422,6 +430,7 @@ flowchart TD
pkg_tui --> pkg_agent_loop
pkg_tui --> pkg_commands
pkg_tui --> pkg_llm
pkg_tui --> pkg_llm_retry
pkg_tui --> pkg_session
pkg_tui --> pkg_tools
pkg_tui --> pkg_user_interaction
@@ -430,6 +439,7 @@ flowchart TD
pkg_agent_spine_demo --> pkg_home
pkg_agent_spine_demo --> pkg_invariants
pkg_agent_spine_demo --> pkg_llm
pkg_agent_spine_demo --> pkg_llm_retry
pkg_agent_spine_demo --> pkg_session
pkg_agent_spine_demo --> pkg_skill
pkg_agent_spine_demo --> pkg_skill_local
@@ -504,8 +514,8 @@ flowchart TD
| [`helper`](../packages/sdk/helper) | `sdk` | [`brand`](../packages/util/brand) |
| [`scripts`](../packages/sdk/scripts) | `sdk` | [`app-boot`](../packages/ui/app-boot) |
| [`telemetry`](../packages/sdk/telemetry) | `sdk` | [`brand`](../packages/util/brand) |
| [`llm-deepseek`](../packages/llm/llm-deepseek) | `llm` | [`llm`](../packages/llm/llm) |
| [`llm-pi-ai`](../packages/llm/llm-pi-ai) | `llm` | [`llm`](../packages/llm/llm) |
| [`llm-deepseek`](../packages/llm/llm-deepseek) | `llm` | [`llm`](../packages/llm/llm), [`timeout`](../packages/util/timeout) |
| [`llm-pi-ai`](../packages/llm/llm-pi-ai) | `llm` | [`llm`](../packages/llm/llm), [`timeout`](../packages/util/timeout) |
| [`session`](../packages/core/session) | `core` | [`brand`](../packages/util/brand), [`llm`](../packages/llm/llm), [`scope`](../packages/core/scope) |
| [`system-prompt`](../packages/core/system-prompt) | `core` | [`llm`](../packages/llm/llm), [`scope`](../packages/core/scope) |
| [`web`](../packages/web/web) | `web` | [`llm`](../packages/llm/llm) |
@@ -525,6 +535,7 @@ flowchart TD
| [`llm-replay`](../packages/support/llm-replay) | `support` | [`llm`](../packages/llm/llm), [`session`](../packages/core/session) |
| [`sandbox-local`](../packages/sandbox/sandbox-local) | `sandbox` | [`llm`](../packages/llm/llm), [`sandbox`](../packages/sandbox/sandbox) |
| [`sandbox-policy`](../packages/sandbox/sandbox-policy) | `sandbox` | [`sandbox`](../packages/sandbox/sandbox), [`session`](../packages/core/session) |
| [`llm-retry`](../packages/llm/llm-retry) | `llm` | [`agent`](../packages/core/agent), [`llm`](../packages/llm/llm), [`session`](../packages/core/session), [`timeout`](../packages/util/timeout) |
| [`goal`](../packages/goal/goal) | `goal` | [`agent`](../packages/core/agent), [`brand`](../packages/util/brand), [`llm`](../packages/llm/llm), [`scope`](../packages/core/scope), [`session`](../packages/core/session) |
| [`bash-local`](../packages/bash/bash-local) | `bash` | [`bash`](../packages/bash/bash), [`timeout`](../packages/util/timeout) |
| [`fs-local`](../packages/fs/fs-local) | `fs` | [`fs`](../packages/fs/fs) |
@@ -562,7 +573,7 @@ flowchart TD
| [`tool-cordis`](../packages/cordis/tool-cordis) | `cordis` | [`scope`](../packages/core/scope), [`tools`](../packages/core/tools) |
| [`hooks-codex`](../packages/hooks/hooks-codex) | `hooks` | [`agent`](../packages/core/agent), [`hook-protocol`](../packages/hooks/hook-protocol), [`llm`](../packages/llm/llm), [`session`](../packages/core/session), [`session-persistence`](../packages/session-persistence/session-persistence), [`tools`](../packages/core/tools) |
| [`agent-loop-testkit`](../packages/support/agent-loop-testkit) | `support` | [`agent`](../packages/core/agent), [`llm`](../packages/llm/llm), [`session`](../packages/core/session), [`system-prompt`](../packages/core/system-prompt), [`tools`](../packages/core/tools) |
| [`acp`](../packages/ui/acp) | `ui` | [`agent`](../packages/core/agent), [`bash`](../packages/bash/bash), [`commands`](../packages/ui/commands), [`llm`](../packages/llm/llm), [`permission`](../packages/ui/permission), [`sandbox`](../packages/sandbox/sandbox), [`session`](../packages/core/session), [`session-persistence`](../packages/session-persistence/session-persistence), [`system-prompt`](../packages/core/system-prompt), [`tools`](../packages/core/tools), [`user-approval`](../packages/ui/user-approval), [`user-interaction`](../packages/ui/user-interaction) |
| [`acp`](../packages/ui/acp) | `ui` | [`agent`](../packages/core/agent), [`bash`](../packages/bash/bash), [`commands`](../packages/ui/commands), [`llm`](../packages/llm/llm), [`llm-retry`](../packages/llm/llm-retry), [`permission`](../packages/ui/permission), [`sandbox`](../packages/sandbox/sandbox), [`session`](../packages/core/session), [`session-persistence`](../packages/session-persistence/session-persistence), [`system-prompt`](../packages/core/system-prompt), [`tools`](../packages/core/tools), [`user-approval`](../packages/ui/user-approval), [`user-interaction`](../packages/ui/user-interaction) |
| [`tool-ask-user`](../packages/ui/tool-ask-user) | `ui` | [`agent`](../packages/core/agent), [`tools`](../packages/core/tools), [`user-interaction`](../packages/ui/user-interaction) |
| [`workspace-context`](../packages/context/workspace-context) | `context` | [`agent`](../packages/core/agent), [`fs`](../packages/fs/fs), [`llm`](../packages/llm/llm), [`paths`](../packages/util/paths), [`session`](../packages/core/session), [`tools`](../packages/core/tools) |
| [`repeat-tool-guard`](../packages/guard/repeat-tool-guard) | `guard` | [`agent`](../packages/core/agent), [`tools`](../packages/core/tools) |
@@ -574,8 +585,8 @@ flowchart TD
| [`tool-subagent`](../packages/subagent/tool-subagent) | `subagent` | [`agent`](../packages/core/agent), [`llm`](../packages/llm/llm), [`subagent`](../packages/subagent/subagent), [`tasks`](../packages/tasks/tasks), [`tools`](../packages/core/tools) |
| [`hooks-claude`](../packages/hooks/hooks-claude) | `hooks` | [`agent`](../packages/core/agent), [`hook-protocol`](../packages/hooks/hook-protocol), [`llm`](../packages/llm/llm), [`session`](../packages/core/session), [`session-persistence`](../packages/session-persistence/session-persistence), [`subagent`](../packages/subagent/subagent), [`tools`](../packages/core/tools) |
| [`jsonrpc`](../packages/ui/jsonrpc) | `ui` | [`agent`](../packages/core/agent), [`llm`](../packages/llm/llm), [`llm-deepseek`](../packages/llm/llm-deepseek), [`scope`](../packages/core/scope), [`session`](../packages/core/session), [`subagent`](../packages/subagent/subagent) |
| [`tui`](../packages/ui/tui) | `ui` | [`agent`](../packages/core/agent), [`agent-loop`](../packages/core/agent-loop), [`commands`](../packages/ui/commands), [`llm`](../packages/llm/llm), [`session`](../packages/core/session), [`tools`](../packages/core/tools), [`user-interaction`](../packages/ui/user-interaction) |
| [`agent-spine-demo`](../packages/examples/agent-spine-demo) | `examples` | [`agent`](../packages/core/agent), [`agent-loop`](../packages/core/agent-loop), [`home`](../packages/util/home), [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`session`](../packages/core/session), [`skill`](../packages/skill/skill), [`skill-local`](../packages/skill/skill-local), [`system-prompt`](../packages/core/system-prompt), [`tasks`](../packages/tasks/tasks), [`tool-bash`](../packages/bash/tool-bash), [`tool-skill`](../packages/skill/tool-skill), [`tool-tasks`](../packages/tasks/tool-tasks), [`tools`](../packages/core/tools), [`workspace-context`](../packages/context/workspace-context) |
| [`tui`](../packages/ui/tui) | `ui` | [`agent`](../packages/core/agent), [`agent-loop`](../packages/core/agent-loop), [`commands`](../packages/ui/commands), [`llm`](../packages/llm/llm), [`llm-retry`](../packages/llm/llm-retry), [`session`](../packages/core/session), [`tools`](../packages/core/tools), [`user-interaction`](../packages/ui/user-interaction) |
| [`agent-spine-demo`](../packages/examples/agent-spine-demo) | `examples` | [`agent`](../packages/core/agent), [`agent-loop`](../packages/core/agent-loop), [`home`](../packages/util/home), [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`llm-retry`](../packages/llm/llm-retry), [`session`](../packages/core/session), [`skill`](../packages/skill/skill), [`skill-local`](../packages/skill/skill-local), [`system-prompt`](../packages/core/system-prompt), [`tasks`](../packages/tasks/tasks), [`tool-bash`](../packages/bash/tool-bash), [`tool-skill`](../packages/skill/tool-skill), [`tool-tasks`](../packages/tasks/tool-tasks), [`tools`](../packages/core/tools), [`workspace-context`](../packages/context/workspace-context) |
| [`workflow-workerthread`](../packages/workflow/workflow-workerthread) | `workflow` | [`agent`](../packages/core/agent), [`brand`](../packages/util/brand), [`llm`](../packages/llm/llm), [`session`](../packages/core/session), [`subagent`](../packages/subagent/subagent), [`tools`](../packages/core/tools), [`workflow`](../packages/workflow/workflow) |
| [`subagent-fork`](../packages/subagent/subagent-fork) | `subagent` | [`agent`](../packages/core/agent), [`session`](../packages/core/session), [`subagent`](../packages/subagent/subagent), [`subagent-inprocess`](../packages/subagent/subagent-inprocess) |
| [`subagent-spawn`](../packages/subagent/subagent-spawn) | `subagent` | [`subagent`](../packages/subagent/subagent), [`subagent-inprocess`](../packages/subagent/subagent-inprocess) |

View File

@@ -79,7 +79,7 @@ export type SessionEvent<T extends SessionEventType = SessionEventType> = {
}[T]
```
Sources: [`packages/core/session/src/types.ts:263`](../packages/core/session/src/types.ts) · [`packages/core/session/src/types.ts:270`](../packages/core/session/src/types.ts) · [`packages/core/session/src/types.ts:300`](../packages/core/session/src/types.ts) · [`packages/core/session/src/types.ts:332`](../packages/core/session/src/types.ts)
Sources: [`packages/core/session/src/types.ts:267`](../packages/core/session/src/types.ts) · [`packages/core/session/src/types.ts:274`](../packages/core/session/src/types.ts) · [`packages/core/session/src/types.ts:304`](../packages/core/session/src/types.ts) · [`packages/core/session/src/types.ts:336`](../packages/core/session/src/types.ts)
## Events
@@ -151,7 +151,7 @@ Source: [`packages/ui/user-approval/src/index.ts:68`](../packages/ui/user-approv
Types: [StreamChunk](core-data-structures/llm-streaming.md)
Source: [`packages/core/session/src/types.ts:227`](../packages/core/session/src/types.ts)
Source: [`packages/core/session/src/types.ts:231`](../packages/core/session/src/types.ts)
#### `assistant/message` — surface
@@ -167,7 +167,7 @@ Source: [`packages/core/session/src/types.ts:227`](../packages/core/session/src/
Types: [ContentBlock](core-data-structures/core.md) · [TokenUsage](core-data-structures/llm-streaming.md)
Source: [`packages/core/session/src/types.ts:234`](../packages/core/session/src/types.ts)
Source: [`packages/core/session/src/types.ts:238`](../packages/core/session/src/types.ts)
### `compact/*`
@@ -246,7 +246,7 @@ Source: [`packages/compact/compact/src/types.ts:22`](../packages/compact/compact
Types: [ContentBlock](core-data-structures/core.md) · [MessageSource](core-data-structures/core.md)
Source: [`packages/core/session/src/types.ts:221`](../packages/core/session/src/types.ts)
Source: [`packages/core/session/src/types.ts:225`](../packages/core/session/src/types.ts)
### `hook/*`
@@ -294,6 +294,24 @@ Source: [`packages/hooks/hook-protocol/src/types.ts:19`](../packages/hooks/hook-
Source: [`packages/hooks/hook-protocol/src/types.ts:31`](../packages/hooks/hook-protocol/src/types.ts)
### `llm/*`
#### `llm/retry` — log-only
```ts persistence-catalog
/** Durable, non-surface record of one transient retry scheduled after a closed failed step. */
'llm/retry': {
turn: number
step: number
retry: number
maxRetries: number
delayMs: number
failure: LlmFailure
}
```
Source: [`packages/llm/llm-retry/src/index.ts:18`](../packages/llm/llm-retry/src/index.ts)
### `permission/*`
#### `permission/preset` — log-only
@@ -324,7 +342,7 @@ Source: [`packages/ui/permission/src/index.ts:36`](../packages/ui/permission/src
Types: [ContentBlock](core-data-structures/core.md) · [MessageSource](core-data-structures/core.md)
Source: [`packages/core/session/src/types.ts:209`](../packages/core/session/src/types.ts)
Source: [`packages/core/session/src/types.ts:213`](../packages/core/session/src/types.ts)
### `request/*`
@@ -338,7 +356,7 @@ Source: [`packages/core/session/src/types.ts:209`](../packages/core/session/src/
'request/header': { header: EpochHeader; reason: RequestHeaderReason }
```
Source: [`packages/core/session/src/types.ts:259`](../packages/core/session/src/types.ts)
Source: [`packages/core/session/src/types.ts:263`](../packages/core/session/src/types.ts)
### `sandbox/*`
@@ -369,7 +387,7 @@ Source: [`packages/sandbox/sandbox-policy/src/session-mode.ts:34`](../packages/s
Types: [ContentBlock](core-data-structures/core.md) · [MessageSource](core-data-structures/core.md)
Source: [`packages/core/session/src/types.ts:252`](../packages/core/session/src/types.ts)
Source: [`packages/core/session/src/types.ts:256`](../packages/core/session/src/types.ts)
### `step/*`
@@ -380,7 +398,7 @@ Source: [`packages/core/session/src/types.ts:252`](../packages/core/session/src/
'step/end': { turn: number; step: number }
```
Source: [`packages/core/session/src/types.ts:202`](../packages/core/session/src/types.ts)
Source: [`packages/core/session/src/types.ts:206`](../packages/core/session/src/types.ts)
#### `step/start` — log-only
@@ -389,7 +407,7 @@ Source: [`packages/core/session/src/types.ts:202`](../packages/core/session/src/
'step/start': { turn: number; step: number }
```
Source: [`packages/core/session/src/types.ts:200`](../packages/core/session/src/types.ts)
Source: [`packages/core/session/src/types.ts:204`](../packages/core/session/src/types.ts)
### `todo/*`
@@ -402,7 +420,7 @@ Source: [`packages/core/session/src/types.ts:200`](../packages/core/session/src/
Types: [TodoItem](core-data-structures/session.md)
Source: [`packages/core/session/src/types.ts:254`](../packages/core/session/src/types.ts)
Source: [`packages/core/session/src/types.ts:258`](../packages/core/session/src/types.ts)
### `tool/*`
@@ -419,7 +437,7 @@ Source: [`packages/core/session/src/types.ts:254`](../packages/core/session/src/
Types: [CallId](core-data-structures/core.md)
Source: [`packages/core/session/src/types.ts:240`](../packages/core/session/src/types.ts)
Source: [`packages/core/session/src/types.ts:244`](../packages/core/session/src/types.ts)
#### `tool/code-dispatch` — log-only
@@ -463,7 +481,7 @@ Source: [`packages/core/tools/src/code-mode.ts:34`](../packages/core/tools/src/c
Types: [CallId](core-data-structures/core.md) · [ContentBlock](core-data-structures/core.md)
Source: [`packages/core/session/src/types.ts:250`](../packages/core/session/src/types.ts)
Source: [`packages/core/session/src/types.ts:254`](../packages/core/session/src/types.ts)
### `turn/*`
@@ -481,7 +499,7 @@ Source: [`packages/core/session/src/types.ts:250`](../packages/core/session/src/
Types: [TurnEndReason](core-data-structures/session.md)
Source: [`packages/core/session/src/types.ts:198`](../packages/core/session/src/types.ts)
Source: [`packages/core/session/src/types.ts:202`](../packages/core/session/src/types.ts)
#### `turn/start` — log-only
@@ -497,7 +515,7 @@ Source: [`packages/core/session/src/types.ts:198`](../packages/core/session/src/
Types: [TurnTrigger](core-data-structures/session.md)
Source: [`packages/core/session/src/types.ts:191`](../packages/core/session/src/types.ts)
Source: [`packages/core/session/src/types.ts:195`](../packages/core/session/src/types.ts)
### `user/*`
@@ -510,4 +528,4 @@ Source: [`packages/core/session/src/types.ts:191`](../packages/core/session/src/
Types: [ContentBlock](core-data-structures/core.md) · [MessageSource](core-data-structures/core.md)
Source: [`packages/core/session/src/types.ts:204`](../packages/core/session/src/types.ts)
Source: [`packages/core/session/src/types.ts:208`](../packages/core/session/src/types.ts)

View File

@@ -17,6 +17,8 @@ We are DeepSeek — do not ration real-API tests. A no-key test proves plumbing;
Mock only the genuinely expensive or non-deterministic boundary (the LLM adapter, the network, the clock); keep everything downstream real. A hand-rolled stand-in proves the bridge moves bytes, not that the shipping tool behaves as asserted — the two drift while the test stays green. Example: bridge tool-call tests run the scripted mock MODEL but the real tool + real executor (`makeBridgeHarness({ withBash: true })` plugs `dsh-bash-local` + `dsh-tool-bash` and runs an actual `echo`).
Recovery tests separate pre/post-chunk failures by step and prove failed chunks derive no message or tool side effect. Cover exhaustion, cancellation, policy composition, persistence, status, wire counts, transport-closing idle timeouts, and shipping Loader composition.
## Verify the world, not the self-report
An e2e assertion re-runs the command or re-reads the file externally; a keyword probe on the agent's own output lets a cheating agent pass. Assert untouched files are byte-identical. e2e tests own their resources: create the harness in the test, dispose in `afterEach` (even on failure/retry/timeout); shared fixtures live in a plain `tests/harness.ts`, never another `*.e2e.ts` (importing a spec re-registers its `describe` and duplicates real API calls).

View File

@@ -4,4 +4,4 @@
{"type":"step/start","seq":2,"time":0,"data":{"turn":1,"step":1}}
{"type":"request/header","seq":3,"time":0,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
{"type":"step/end","seq":4,"time":0,"data":{"turn":1,"step":1}}
{"type":"turn/end","seq":5,"time":0,"data":{"turn":1,"reason":{"kind":"error","step":1,"message":"simulated provider error (HTTP 401)","code":"AUTH"}}}
{"type":"turn/end","seq":5,"time":0,"data":{"turn":1,"reason":{"kind":"error","step":1,"failure":{"message":"simulated provider error (HTTP 401)","code":"AUTH"}}}}

View File

@@ -1,4 +1,5 @@
{"jsonrpc":"2.0","id":1,"result":{"protocolVersion":1,"agentInfo":{"name":"deepseek-harness-acp","version":"0.0.1"},"agentCapabilities":{"loadSession":true,"promptCapabilities":{"image":false,"audio":false,"embeddedContext":false}},"authMethods":[]}}
{"jsonrpc":"2.0","id":2,"result":{"sessionId":"{{sessionId}}","configOptions":[{"id":"model","name":"Model","description":"Sets this session's provider and model.","category":"model","type":"select","currentValue":"[\"deepseek\",\"deepseek-v4-flash\"]","options":[{"value":"[\"deepseek\",\"deepseek-v4-flash\"]","name":"deepseek-v4-flash"},{"value":"[\"deepseek\",\"deepseek-v4-pro\"]","name":"deepseek-v4-pro"}]},{"id":"permission","name":"Permissions","description":"The session permission preset: each choice bundles a sandbox mode and an approval policy.","category":"mode","type":"select","currentValue":"danger-full-access","options":[{"value":"workspace-write","name":"workspace-write","description":"Write inside the workspace and permitted temporary directories; wider retries require approval."},{"value":"danger-full-access","name":"danger-full-access","description":"Full file access without approval prompts."}]}]}}
{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"available_commands_update","availableCommands":[]}}}
{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":"\n\n[Model attempt failed; any partial output above is discarded: simulated provider error (HTTP 401)]\n\n"}}}}
{"jsonrpc":"2.0","id":3,"error":{"code":-32603,"message":"Internal error: turn failed: simulated provider error (HTTP 401)"}}

View File

@@ -53,5 +53,8 @@
"@deepseek-ai/dsh-web": "workspace:*",
"@deepseek-ai/dsh-web-fetch-local": "workspace:*",
"@deepseek-ai/dsh-workflow-workerthread": "workspace:*"
},
"devDependencies": {
"node-pty": "1.1.0"
}
}

View File

@@ -2,9 +2,9 @@ import { spawn } from 'node:child_process'
import { mkdtemp, rm } from 'node:fs/promises'
import { tmpdir } from 'node:os'
import { join } from 'node:path'
import { resolveExampleLaunch } from '@deepseek-ai/dsh-loader-smoke'
import { resolveExampleLaunch, type ExampleLaunch } from '@deepseek-ai/dsh-loader-smoke'
const PTY_DRIVER = String.raw`
const POSIX_PTY_DRIVER = String.raw`
import errno, json, os, pty, select, signal, sys, time
node, launch_args_json, launch_env_json, cwd, actions_json, expected_exit, timeout_seconds = sys.argv[1:]
env = os.environ.copy()
@@ -71,9 +71,103 @@ export interface TuiPtySmokeOptions {
readonly timeoutMs?: number
}
function definedEnv(env: NodeJS.ProcessEnv): Record<string, string> {
return Object.fromEntries(
Object.entries(env).filter((entry): entry is [string, string] => entry[1] !== undefined),
)
}
async function runPosixPtySmoke(
launch: ExampleLaunch,
cwd: string,
options: TuiPtySmokeOptions,
timeoutMs: number,
): Promise<string> {
return await new Promise((resolve, reject) => {
const child = spawn('python3', [
'-c',
POSIX_PTY_DRIVER,
launch.command,
JSON.stringify(launch.args),
JSON.stringify(launch.env),
cwd,
JSON.stringify(options.actions ?? []),
String(options.expectedExitCode ?? 0),
String(timeoutMs / 1_000),
], { stdio: ['ignore', 'pipe', 'pipe'] })
let stdout = ''
let stderr = ''
child.stdout.setEncoding('utf8')
child.stdout.on('data', (chunk: string) => { stdout += chunk })
child.stderr.setEncoding('utf8')
child.stderr.on('data', (chunk: string) => { stderr += chunk })
const timer = setTimeout(() => {
child.kill('SIGKILL')
reject(new Error(`${options.label} PTY driver did not exit. stdout:\n${stdout}\nstderr:\n${stderr}`))
}, timeoutMs + 5_000)
child.once('error', (error) => { clearTimeout(timer); reject(error) })
child.once('exit', (code) => {
clearTimeout(timer)
if (code === 0) resolve(stdout)
else reject(new Error(`${options.label} PTY driver exited ${String(code)}. stdout:\n${stdout}\nstderr:\n${stderr}`))
})
})
}
async function runWindowsPtySmoke(
launch: ExampleLaunch,
cwd: string,
options: TuiPtySmokeOptions,
timeoutMs: number,
): Promise<string> {
const pty = await import('node-pty')
return await new Promise((resolve, reject) => {
const actions = options.actions ?? []
const expectedExitCode = options.expectedExitCode ?? 0
let output = ''
let actionIndex = 0
let timedOut = false
const terminal = pty.spawn(launch.command, launch.args, {
name: 'xterm-256color',
cols: 100,
rows: 30,
cwd,
env: definedEnv({
...process.env,
...launch.env,
COLUMNS: '100',
LINES: '30',
}),
})
const timer = setTimeout(() => {
timedOut = true
terminal.kill()
}, timeoutMs)
terminal.onData((chunk) => {
output += chunk
while (actionIndex < actions.length && output.includes(actions[actionIndex]!.waitFor)) {
terminal.write(actions[actionIndex]!.send)
actionIndex += 1
}
})
terminal.onExit(({ exitCode, signal }) => {
clearTimeout(timer)
if (timedOut) {
reject(new Error(`${options.label} PTY process did not exit before ${String(timeoutMs)}ms. output:\n${output}`))
} else if (actionIndex !== actions.length) {
reject(new Error(`${options.label} completed ${String(actionIndex)}/${String(actions.length)} PTY actions. output:\n${output}`))
} else if (exitCode !== expectedExitCode) {
reject(new Error(`${options.label} expected exit ${String(expectedExitCode)}, got ${String(exitCode)} (signal ${String(signal)}). output:\n${output}`))
} else {
resolve(output)
}
})
})
}
/**
* Boot an example in a real pseudo-terminal, drive marker-gated input, and
* return the captured terminal bytes after the expected process exit.
* Boot an example in a real pseudo-terminal (ConPTY on Windows), drive
* marker-gated input, and return captured bytes after the expected process exit.
* @param options - launch paths, environment, actions, and expected exit code.
* @returns complete pseudo-terminal output.
*/
@@ -92,35 +186,10 @@ export async function runTuiPtySmoke(options: TuiPtySmokeOptions): Promise<strin
...options.env,
},
})
return await new Promise((resolve, reject) => {
const child = spawn('python3', [
'-c',
PTY_DRIVER,
launch.command,
JSON.stringify(launch.args),
JSON.stringify(launch.env),
cwd,
JSON.stringify(options.actions ?? []),
String(options.expectedExitCode ?? 0),
String(timeoutMs / 1_000),
], { stdio: ['ignore', 'pipe', 'pipe'] })
let stdout = ''
let stderr = ''
child.stdout.setEncoding('utf8')
child.stdout.on('data', (chunk: string) => { stdout += chunk })
child.stderr.setEncoding('utf8')
child.stderr.on('data', (chunk: string) => { stderr += chunk })
const timer = setTimeout(() => {
child.kill('SIGKILL')
reject(new Error(`${options.label} PTY driver did not exit. stdout:\n${stdout}\nstderr:\n${stderr}`))
}, timeoutMs + 5_000)
child.once('error', (error) => { clearTimeout(timer); reject(error) })
child.once('exit', (code) => {
clearTimeout(timer)
if (code === 0) resolve(stdout)
else reject(new Error(`${options.label} PTY driver exited ${String(code)}. stdout:\n${stdout}\nstderr:\n${stderr}`))
})
})
if (process.platform === 'win32') {
return await runWindowsPtySmoke(launch, cwd, options, timeoutMs)
}
return await runPosixPtySmoke(launch, cwd, options, timeoutMs)
} finally {
await rm(cwd, { recursive: true, force: true })
}

View File

@@ -8,8 +8,7 @@ const configPath = fileURLToPath(new URL('../cordis.yml', import.meta.url))
const scriptedConfigPath = fileURLToPath(new URL('./fixtures/tui-scripted.cordis.yml', import.meta.url))
const tsconfigPath = fileURLToPath(new URL('../../../tsconfig.json', import.meta.url))
// The Python PTY driver imports the POSIX-only pty and termios modules.
describe.skipIf(process.platform === 'win32')('tui-agent keyless smoke (real Loader tree in a PTY)', () => {
describe('tui-agent keyless smoke (real Loader tree in a PTY)', () => {
it('boots pi-tui, renders the configured banner, accepts /exit, and restores the terminal', async () => {
const output = await runTuiPtySmoke({
label: 'tui-agent boot',

View File

@@ -47,6 +47,7 @@
"@deepseek-ai/dsh-compact": "workspace:^",
"@deepseek-ai/dsh-invariants": "workspace:^",
"@deepseek-ai/dsh-llm": "workspace:^",
"@deepseek-ai/dsh-llm-retry": "workspace:^",
"@deepseek-ai/dsh-session": "workspace:^",
"@deepseek-ai/dsh-token-meter": "workspace:^",
"@deepseek-ai/dsh-compact-tool-result-prune": "workspace:^",

View File

@@ -95,9 +95,10 @@ export class BasicCompactService extends CompactService {
}
})
ctx.on('agent/request-error', async (agent, _turn, _step, error, retryAttempt, signal, next) => {
if (error.code !== CONTEXT_WINDOW_EXCEEDED_CODE
|| retryAttempt >= this.config.maxOverflowRetries
ctx.on('agent/request-error', async (agent, _turn, _step, _error, failure, priorFailures, signal, next) => {
const priorOverflowFailures = priorFailures.filter(item => item.code === CONTEXT_WINDOW_EXCEEDED_CODE).length
if (failure.code !== CONTEXT_WINDOW_EXCEEDED_CODE
|| priorOverflowFailures >= this.config.maxOverflowRetries
|| signal.aborted) return next()
const generation = agent.session.surface.replaceGeneration

View File

@@ -141,14 +141,10 @@ export function frameSummary(summary: readonly ContentBlock[]): ContentBlock[] {
/** Map a terminal summarization finish to its fail-closed error. */
function finishError(finish: FinishReason): Error | undefined {
switch (finish.kind) {
case 'error': {
const error = new Error(finish.message) as Error & { code?: string }
if (finish.code !== undefined) error.code = finish.code
return error
}
case 'error':
case 'aborted': {
const error = new Error('summarization stream aborted') as Error & { code?: string }
error.code = 'ABORTED'
const error = new Error(finish.failure.message) as Error & { code?: string }
error.code = finish.failure.code
return error
}
case 'max-tokens': {

View File

@@ -7,7 +7,7 @@ import { toolPairingBalancedAfter, toolPairingBalancedBefore } from '@deepseek-a
import { resolveConfig } from '@deepseek-ai/dsh-compact-basic/src/config.ts'
import type { CompactionResult } from '@deepseek-ai/dsh-compact'
import LlmService, { CallId, CONTEXT_WINDOW_EXCEEDED_CODE, LlmAdapter } from '@deepseek-ai/dsh-llm'
import type { ContentBlock, GenerateOptions, StreamChunk } from '@deepseek-ai/dsh-llm'
import type { ContentBlock, GenerateOptions, LlmFailure, StreamChunk } from '@deepseek-ai/dsh-llm'
import { Session, SessionId } from '@deepseek-ai/dsh-session'
import TokenMeterService from '@deepseek-ai/dsh-token-meter'
import ToolResultPruneService from '@deepseek-ai/dsh-compact-tool-result-prune'
@@ -872,9 +872,9 @@ describe('default one-shot summarizer', () => {
})
it.each([
[{ kind: 'error', message: 'provider failed', code: 'PROVIDER' }, 'PROVIDER', /provider failed/],
[{ kind: 'error', message: 'opaque' }, undefined, /opaque/],
[{ kind: 'aborted' }, 'ABORTED', /aborted/],
[{ kind: 'error', failure: { message: 'provider failed', code: 'PROVIDER' } }, 'PROVIDER', /provider failed/],
[{ kind: 'error', failure: { message: 'opaque', code: 'UNKNOWN' } }, 'UNKNOWN', /opaque/],
[{ kind: 'aborted', failure: { message: 'summarization aborted', code: 'ABORTED' } }, 'ABORTED', /aborted/],
[{ kind: 'max-tokens' }, 'MAX_TOKENS', /token cap/],
] as Array<[(StreamChunk & { type: 'finish' })['reason'], string | undefined, RegExp]>) (
'rejects terminal finish %#',
@@ -912,7 +912,9 @@ describe('automatic listener and loader composition', () => {
signal = SIGNAL,
next: () => Promise<{ action: 'fail' | 'retry' }> = () => Promise.resolve({ action: 'fail' }),
): Promise<{ action: 'fail' | 'retry' }> {
return ctx.waterfall('agent/request-error', owner, 1, 1, error, retryAttempt, signal, next)
const failure: LlmFailure = { message: error.message, code: error.code ?? 'UNKNOWN' }
const priorFailures = Object.freeze(Array.from({ length: retryAttempt }, () => failure))
return ctx.waterfall('agent/request-error', owner, 1, 1, error, failure, priorFailures, signal, next)
}
function overflow(message = 'provider overflow'): Error & { code: string } {

View File

@@ -11,6 +11,7 @@ import { mountAgentLoopTestDependencies } from '@deepseek-ai/dsh-agent-loop-test
import * as Invariants from '@deepseek-ai/dsh-invariants'
import { BasicCompactService } from '@deepseek-ai/dsh-compact-basic'
import TokenMeterService from '@deepseek-ai/dsh-token-meter'
import * as LlmRetry from '@deepseek-ai/dsh-llm-retry'
import { SessionId, type SurfaceEvent } from '@deepseek-ai/dsh-session'
/**
@@ -61,7 +62,10 @@ class OverflowRecoveryAdapter extends LlmAdapter {
readonly conversationRequests: GenerateOptions[] = []
readonly summaryRequests: GenerateOptions[] = []
constructor(private readonly delivery: 'thrown' | 'in-band') {
constructor(
private readonly delivery: 'thrown' | 'in-band',
private readonly transientAfterOverflow = false,
) {
super()
}
@@ -83,12 +87,17 @@ class OverflowRecoveryAdapter extends LlmAdapter {
type: 'finish',
reason: {
kind: 'error',
message: 'request too large for model context',
code: CONTEXT_WINDOW_EXCEEDED_CODE,
failure: {
message: 'request too large for model context',
code: CONTEXT_WINDOW_EXCEEDED_CODE,
},
},
}
return
}
if (this.transientAfterOverflow && this.conversationRequests.length === 2) {
throw new LlmError('temporary provider outage', 'SERVER')
}
yield { type: 'block-start', index: 0, blockType: 'text' }
yield { type: 'block-end', index: 0, block: { type: 'text', text: 'recovered' } }
yield { type: 'finish', reason: { kind: 'stop' } }
@@ -134,6 +143,29 @@ function waitForIdle(ctx: Context, agent: Agent): Promise<void> {
})
}
function seedOverflowHistory(agent: Agent): void {
for (let turn = 1; turn <= 2; turn += 1) {
const sentinel = turn === 1 ? 'OLD HISTORY SENTINEL' : 'RECENT HISTORY'
agent.session.append('turn/start', {
turn,
trigger: { kind: 'message', source: { kind: 'user' } },
})
agent.session.append('user/message', {
content: [{ type: 'text', text: `${sentinel} ${'old context '.repeat(200)}` }],
source: { kind: 'user' },
}, { surfaceOp: 'append' })
agent.session.append('step/start', { turn, step: 1 })
agent.session.append('assistant/message', {
provenance: { provider: 'mock', model: 'mock' },
turn,
step: 1,
content: [{ type: 'text', text: `historical response ${turn} ${'detail '.repeat(200)}` }],
}, { surfaceOp: 'append' })
agent.session.append('step/end', { turn, step: 1 })
agent.session.append('turn/end', { turn, reason: { kind: 'completed' } })
}
}
describe('CBR-001: a real-loop checkpoint is a valid boundary on both sides', () => {
it('uses the model actually routed by agent/request for post-step pressure', async () => {
const { ctx } = await harness(8)
@@ -241,26 +273,7 @@ describe('context-overflow recovery across the real loop and compact-basic', ()
provider: 'unconfigured-agent-fallback',
model: 'unconfigured-agent-fallback',
})
for (let turn = 1; turn <= 2; turn += 1) {
const sentinel = turn === 1 ? 'OLD HISTORY SENTINEL' : 'RECENT HISTORY'
agent.session.append('turn/start', {
turn,
trigger: { kind: 'message', source: { kind: 'user' } },
})
agent.session.append('user/message', {
content: [{ type: 'text', text: `${sentinel} ${'old context '.repeat(200)}` }],
source: { kind: 'user' },
}, { surfaceOp: 'append' })
agent.session.append('step/start', { turn, step: 1 })
agent.session.append('assistant/message', {
provenance: { provider: 'mock', model: 'mock' },
turn,
step: 1,
content: [{ type: 'text', text: `historical response ${turn} ${'detail '.repeat(200)}` }],
}, { surfaceOp: 'append' })
agent.session.append('step/end', { turn, step: 1 })
agent.session.append('turn/end', { turn, reason: { kind: 'completed' } })
}
seedOverflowHistory(agent)
agent.send([{ type: 'text', text: 'continue from history' }])
await agent.whenIdle()
@@ -299,4 +312,47 @@ describe('context-overflow recovery across the real loop and compact-basic', ()
}
},
)
it('keeps context-overflow and transient retry budgets independent in one sequence', async () => {
const ctx = new Context()
const adapter = new OverflowRecoveryAdapter('thrown', true)
await mountAgentLoopTestDependencies(ctx)
await ctx.plugin(Invariants)
await ctx.plugin(LlmRetry, {
maxTransientRetries: 1,
initialDelayMs: 1,
maxDelayMs: 1,
jitterRatio: 0,
})
await ctx.plugin(AgentLoop, { agents: [] })
await ctx.plugin(TokenMeterService, { contextWindow: 128 })
ctx.llm.registerAdapter(['mock'], adapter)
await ctx.plugin(BasicCompactService, {
thresholdRatio: 1,
retainTokens: 100,
maxTokens: 64,
compactionRetries: 0,
maxOverflowRetries: 1,
})
try {
const agent = ctx.agentLoop.create(SessionId('alternating-recovery'), { provider: 'mock', model: 'mock' })
seedOverflowHistory(agent)
agent.send([{ type: 'text', text: 'continue from history' }])
await agent.whenIdle()
expect(adapter.conversationRequests).toHaveLength(3)
expect(adapter.summaryRequests).toHaveLength(1)
expect(agent.session.events.filter(event => event.type === 'llm/retry').map(event => event.data))
.toEqual([expect.objectContaining({ step: 2, retry: 1, failure: { message: 'temporary provider outage', code: 'SERVER' } })])
expect(agent.session.events.filter(event => event.type === 'step/start').slice(-3).map(event => event.data.step))
.toEqual([1, 2, 3])
expect(agent.session.events.at(-1)).toMatchObject({
type: 'turn/end',
data: { reason: { kind: 'completed' } },
})
} finally {
await ctx.fiber.dispose()
}
})
})

View File

@@ -766,8 +766,8 @@ export const EVENT_API: readonly EventApiEntry[] = [
{
name: 'agent/request-error',
mode: 'waterfall',
signature: '\'agent/request-error\'(this: Scoped<Agent>, agent: Agent, turn: number, step: number, error: RequestError, retryAttempt: number, signal: AbortSignal, next: () => Promise<RequestErrorDecision>): Promise<RequestErrorDecision>',
jsDoc: '/**\n * Recover a model-request failure after its failed step has closed. `retry`\n * opens a new numbered step; `fail` preserves the original request error.\n * Call `next()` to delegate to the next recovery listener or the default.\n * @param agent - the agent whose request failed.\n * @param turn - the open turn number.\n * @param step - the failed step number.\n * @param error - the original model-request failure.\n * @param retryAttempt - zero-based number of prior recovery retries.\n * @param signal - the turn abort signal.\n * Scope-filtered dispatch (`@deepseek-ai/dsh-scope`): agent-scoped listeners receive only that agent.\n * @mode waterfall\n */',
signature: '\'agent/request-error\'(this: Scoped<Agent>, agent: Agent, turn: number, step: number, error: RequestError, failure: LlmFailure, priorFailures: readonly LlmFailure[], signal: AbortSignal, next: () => Promise<RequestErrorDecision>): Promise<RequestErrorDecision>',
jsDoc: '/**\n * Recover a model-request failure after its failed step has closed. `retry`\n * opens a new numbered step; `fail` preserves the original request error.\n * Call `next()` to delegate to the next recovery listener or the default.\n * @param agent - the agent whose request failed.\n * @param turn - the open turn number.\n * @param step - the failed step number.\n * @param error - the original model-request failure.\n * @param failure - serializable facts normalized at the final adapter boundary.\n * @param priorFailures - immutable failures that already authorized another request in this consecutive sequence.\n * @param signal - the turn abort signal.\n * Scope-filtered dispatch (`@deepseek-ai/dsh-scope`): agent-scoped listeners receive only that agent.\n * @mode waterfall\n */',
summary: 'Recover a model-request failure after its failed step has closed.',
},
{
@@ -1246,7 +1246,7 @@ export const TYPE_API: readonly TypeApiEntry[] = [
},
{
name: 'FinishReasonMap',
declaration: 'export interface FinishReasonMap {\n \'stop\': {\n kind: \'stop\';\n };\n \'tool-calls\': {\n kind: \'tool-calls\';\n };\n \'max-tokens\': {\n kind: \'max-tokens\';\n };\n \'aborted\': {\n kind: \'aborted\';\n };\n \'error\': {\n kind: \'error\';\n message: string;\n code?: string;\n };\n}',
declaration: 'export interface FinishReasonMap {\n \'stop\': {\n kind: \'stop\';\n };\n \'tool-calls\': {\n kind: \'tool-calls\';\n };\n \'max-tokens\': {\n kind: \'max-tokens\';\n };\n \'aborted\': {\n kind: \'aborted\';\n failure: LlmFailure;\n };\n \'error\': {\n kind: \'error\';\n failure: LlmFailure;\n };\n}',
},
{
name: 'FsDirEntry',
@@ -1344,6 +1344,10 @@ export const TYPE_API: readonly TypeApiEntry[] = [
name: 'LlmCallConfig',
declaration: 'export interface LlmCallConfig {\n provider: string;\n model: string;\n temperature?: number;\n maxTokens?: number;\n stop?: string[];\n}',
},
{
name: 'LlmFailure',
declaration: 'export interface LlmFailure {\n readonly message: string;\n readonly code: string;\n readonly status?: number;\n readonly providerRetryAfterMs?: number;\n readonly requestId?: ProviderRequestId;\n}',
},
{
name: 'LlmModelInfo',
declaration: 'export interface LlmModelInfo {\n provider: string;\n id: string;\n name: string;\n description?: string;\n}',
@@ -1380,6 +1384,10 @@ export const TYPE_API: readonly TypeApiEntry[] = [
name: 'PromptSection',
declaration: 'export interface PromptSection {\n readonly name: string;\n readonly order: number;\n readonly text: string | ((context: AssembleContext) => string);\n}',
},
{
name: 'ProviderRequestId',
declaration: 'export type ProviderRequestId = Branded<\'ProviderRequestId\'>;',
},
{
name: 'PrunedEntry',
declaration: 'export interface PrunedEntry {\n readonly originalSeq: number;\n readonly replacementSeq: number;\n readonly callId: CallId;\n readonly charsBefore: number;\n readonly charsAfter: number;\n}',
@@ -1734,7 +1742,7 @@ export const TYPE_API: readonly TypeApiEntry[] = [
},
{
name: 'TurnEndReasonMap',
declaration: 'export interface TurnEndReasonMap {\n completed: {\n kind: \'completed\';\n };\n aborted: {\n kind: \'aborted\';\n reason?: string;\n };\n error: {\n kind: \'error\';\n step: number;\n message: string;\n code?: string;\n };\n disposed: {\n kind: \'disposed\';\n };\n \'max-tokens\': {\n kind: \'max-tokens\';\n };\n rejected: {\n kind: \'rejected\';\n reason: string;\n };\n interrupted: {\n kind: \'interrupted\';\n };\n}',
declaration: 'export interface TurnEndReasonMap {\n completed: {\n kind: \'completed\';\n };\n aborted: {\n kind: \'aborted\';\n reason?: string;\n };\n error: {\n kind: \'error\';\n step: number;\n } & ({\n failure: LlmFailure;\n message?: never;\n code?: never;\n } | {\n message: string;\n code?: string;\n failure?: never;\n });\n disposed: {\n kind: \'disposed\';\n };\n \'max-tokens\': {\n kind: \'max-tokens\';\n };\n rejected: {\n kind: \'rejected\';\n reason: string;\n };\n interrupted: {\n kind: \'interrupted\';\n };\n}',
},
{
name: 'TurnTrigger',

View File

@@ -56,7 +56,7 @@ The driver owns one agent for its lifetime and runs inside `ctx.agents.withIniti
Every provider call that reaches a successful finish appends exactly one `assistant/message` completion anchor, including content-less calls and `max-tokens` finishes. A successful `agent/step-result` stores its transformed content; a rejected result records empty content before the original failure continues. The anchor retains exact chunk provenance (`[]` for a stream with no chunks) and usage when available, while empty content stays out of derived message history.
Plugin failure ends the current turn, not the loop. Only final adapter dispatch/iteration failures and terminal in-band error or aborted finishes enter `agent/request-error`; middleware, result processing, tools, and `agent/post-step` remain ordinary turn failures. Recovery observes a closed failed step, and a retry rebuilds the request from the durable log in a new numbered step. Effective cancellation resolves its reason and emits `agent/cancel-requested` before clearing pending work or aborting the current step; notification failures are contained, queued work added by an observer is included in the same broad clear, and idle cancellation emits nothing. Undispatched model tool calls receive synthetic `tool/call` and aborted result pairs. Terminal continuation stops remain authoritative through turn close and durability flush.
Plugin failure ends the current turn, not the loop. Only final adapter dispatch/iteration failures and terminal in-band error or aborted finishes enter `agent/request-error`; middleware, result processing, tools, and `agent/post-step` remain ordinary turn failures. Recovery receives the exact live error, immutable provider facts, and immutable prior failures after the failed step closes. A retry rebuilds from the durable log in a new numbered step, success clears the consecutive history, and exhaustion records the structured failure once on `turn/end`. Effective cancellation resolves its reason and emits `agent/cancel-requested` before clearing pending work or aborting the current step; notification failures are contained, queued work added by an observer is included in the same broad clear, and idle cancellation emits nothing. Undispatched model tool calls receive synthetic `tool/call` and aborted result pairs. Terminal continuation stops remain authoritative through turn close and durability flush.
Within a step, exclusive calls form barriers; parallel-safe calls use a bounded rolling pool and are reclassified before start. Only dispatch/body overlaps. Policy, durable results, and result context remain model-ordered. Abort stops new calls, drains started results, then drains accepted batch context before the turn closes through the normal abort path.
@@ -65,6 +65,7 @@ Within a step, exclusive calls form barriers; parallel-safe calls use a bounded
Everything that goes beyond "call the model, run the tools, repeat" belongs to plugins listening on the event taxonomy:
- Hooks and policy: the relevant `agent/*` checkpoints plus the guarded `tools/pre-execute``tools/execute``tools/post-execute``tools/result` pipeline; exact signatures and modes live in the [generated event catalog](../../../docs/cordis-catalog/events.md)
- Compaction: pressure on `agent/post-step`; canonical context overflow on `agent/request-error`
- Transient model recovery: `dsh-llm-retry` on `agent/request-error`, with finite code-specific budgets and non-surface `llm/retry` status events
- Sandbox, permission, plan mode: `tools/pre-execute` for extensible deny/ask, `tools.guard()` for monotonic owner policy, `tools/post-execute` for result decisions, and `tools/result` for final observation
- Sub-agents: implemented outside the loop as `ctx.subagents` providers; in-process providers use `ctx.agents.create()` and owned `AgentHandle` teardown, while generic [`ctx.tasks`](../../tasks/tasks/) plus [`dsh-tool-subagent`](../../subagent/tool-subagent/) own background collection.
- Persistence: `session/event` + `session/flush`

View File

@@ -6,9 +6,9 @@
*/
import type { Context } from 'cordis'
import type { ContentBlock, FinishReason, GenerateOptions, LlmCallConfig, Message } from '@deepseek-ai/dsh-llm'
import type { ContentBlock, FinishReason, GenerateOptions, LlmCallConfig, LlmFailure, Message } from '@deepseek-ai/dsh-llm'
import { isDeepStrictEqual } from 'node:util'
import { BlockAssembler, HarnessError, assertNever, deepFreeze, errorChain, isLlmAdapterFailure } from '@deepseek-ai/dsh-llm'
import { BlockAssembler, HarnessError, LlmError, assertNever, deepFreeze, errorChain, llmFailureOf } from '@deepseek-ai/dsh-llm'
import { agentEvents, assembleContextFor } from '@deepseek-ai/dsh-agent'
import type { AgentEventDispatch, ContinuationDecision, HookContext, PromptDecision, RequestError, RequestErrorDecision } from '@deepseek-ai/dsh-agent'
import { canonicalHeader } from '@deepseek-ai/dsh-session'
@@ -28,24 +28,29 @@ function toError(error: unknown): RequestError {
/** Distinguishes final model-request failures from failures in later step processing. */
class TerminalModelRequestFailure extends Error {
constructor(readonly requestError: RequestError) {
super(requestError.message, { cause: requestError })
constructor(
readonly requestError: RequestError,
readonly failure: LlmFailure,
) {
super(failure.message, { cause: requestError })
this.name = 'TerminalModelRequestFailure'
}
}
/** Convert terminal failure finishes into step errors; unknown extensible finishes remain successful. */
function finishError(finish: FinishReason): RequestError | undefined {
function finishError(finish: FinishReason): { error: RequestError; failure: LlmFailure } | undefined {
switch (finish.kind) {
case 'error': {
const error: RequestError = new Error(finish.message)
if (finish.code !== undefined) error.code = finish.code
return error
}
case 'error':
case 'aborted': {
const error: RequestError = new Error('model stream aborted')
error.code = 'ABORTED'
return error
const facts = finish.failure
const error = new LlmError(facts.message, facts.code, {
...facts.status === undefined ? {} : { status: facts.status },
...facts.providerRetryAfterMs === undefined
? {}
: { providerRetryAfterMs: facts.providerRetryAfterMs },
...facts.requestId === undefined ? {} : { requestId: facts.requestId },
})
return { error, failure: error.failure }
}
// stop / tool-calls / max-tokens / plugin-added kinds → not a failure.
default:
@@ -64,6 +69,12 @@ function errorData(err: RequestError): { message: string; code?: string } {
return { message: errorChain(err), ...typeof err.code === 'string' ? { code: err.code } : {} }
}
/** Preserve cause diagnostics, falling back to adapter-normalized prose for a hostile Error. */
function durableFailure(err: RequestError, failure: LlmFailure): LlmFailure {
const message = errorChain(err)
return { ...failure, message: message === '<unrenderable value>' ? failure.message : message }
}
/** Map a successful max-token finish onto the turn reason; other successful finishes add nothing. */
function stepFinishReason(finish: FinishReason): TurnEndReason | undefined {
switch (finish.kind) {
@@ -208,7 +219,7 @@ async function runTurn(
let reason: TurnEndReason = { kind: 'completed' }
let step = 0
let requestRetryAttempt = 0
let requestFailureHistory: readonly LlmFailure[] = Object.freeze([])
let stepOpen = false
let errorReported = false
let terminalStopped = false
@@ -221,10 +232,12 @@ async function runTurn(
}
// Record the durable turn failure once and contain the live error notification.
const failTurn = (err: RequestError): void => {
const failTurn = (err: RequestError, failure?: LlmFailure): void => {
if (errorReported) return
errorReported = true
reason = { kind: 'error', step, ...errorData(err) }
reason = failure === undefined
? { kind: 'error', step, ...errorData(err) }
: { kind: 'error', step, failure: durableFailure(err, failure) }
try {
events.emit('agent/error', turn, step, err)
} catch {
@@ -350,14 +363,14 @@ async function runTurn(
let stepOutcome:
| { hadToolCalls: boolean; finish: FinishReason }
| { requestError: RequestError }
| { requestError: RequestError; failure: LlmFailure }
| { error: RequestError }
try {
stepOutcome = await runStep(
ctx, events, handle, turn, step, assembly, fullSystemPrompt, boundaryMessages, transmission, abort.signal)
} catch (error: unknown) {
if (error instanceof TerminalModelRequestFailure) {
stepOutcome = { requestError: error.requestError }
stepOutcome = { requestError: error.requestError, failure: error.failure }
} else {
stepOutcome = { error: toError(error) }
}
@@ -380,7 +393,7 @@ async function runTurn(
try {
recoveryDecision = await events.waterfall(
'agent/request-error', turn, step, stepOutcome.requestError,
requestRetryAttempt, abort.signal,
stepOutcome.failure, requestFailureHistory, abort.signal,
() => Promise.resolve(defaultDecision),
)
} catch (recoveryError: unknown) {
@@ -401,10 +414,10 @@ async function runTurn(
}
switch (recoveryDecision.action) {
case 'retry':
requestRetryAttempt += 1
requestFailureHistory = Object.freeze([...requestFailureHistory, stepOutcome.failure])
continue
case 'fail':
failTurn(stepOutcome.requestError)
failTurn(stepOutcome.requestError, stepOutcome.failure)
break
/* v8 ignore next -- closed-union exhaustiveness guard */
default:
@@ -432,7 +445,7 @@ async function runTurn(
break
}
requestRetryAttempt = 0
requestFailureHistory = Object.freeze([])
// Preserve max-token completion unless a later disposal, abort, or error wins.
const stepReason = stepFinishReason(stepOutcome.finish)
@@ -632,13 +645,14 @@ async function runStep(
assembler.push(chunk)
}
} catch (error: unknown) {
if (isLlmAdapterFailure(stream, error)) throw new TerminalModelRequestFailure(error)
const failure = llmFailureOf(stream, error)
if (failure !== undefined && error instanceof Error) throw new TerminalModelRequestFailure(error, failure)
throw error
}
// Normalize failure finish chunks into the same path as thrown stream errors.
const stepError = finishError(assembler.finish)
if (stepError) throw new TerminalModelRequestFailure(stepError)
if (stepError) throw new TerminalModelRequestFailure(stepError.error, stepError.failure)
const recordAssistantMessage = (
assembledContent: ContentBlock[],

View File

@@ -1,6 +1,6 @@
import { describe, expect, it } from 'vitest'
import { Context } from 'cordis'
import LlmService, { CallId, ContentBlock, MessageSource, StreamChunk } from '@deepseek-ai/dsh-llm'
import LlmService, { CallId, ContentBlock, MessageSource, ProviderRequestId, StreamChunk } from '@deepseek-ai/dsh-llm'
import SessionStore, { Session, SessionEvent, SessionId, TurnEndReason } from '@deepseek-ai/dsh-session'
import SystemPrompt from '@deepseek-ai/dsh-system-prompt'
import ToolRegistry, { defineTool, type PostToolDecision } from '@deepseek-ai/dsh-tools'
@@ -945,8 +945,15 @@ describe('discriminated SessionEvent narrows without casts', () => {
describe('a finish-error stream chunk ends the turn as error, not completed', () => {
it('translates finish {kind:error} into a turn error with a logged error event', async () => {
// A finish-error chunk must not produce a completed assistant turn.
const failure = {
message: 'provider 401',
code: 'AUTH',
status: 401,
providerRetryAfterMs: 2_000,
requestId: ProviderRequestId('finish-request-1'),
}
const errorStream: StreamChunk[] = [
{ type: 'finish', reason: { kind: 'error', message: 'provider 401', code: 'AUTH' } },
{ type: 'finish', reason: { kind: 'error', failure } },
]
const adapter = new MockAdapter([errorStream])
const ctx = await harness(adapter)
@@ -958,20 +965,20 @@ describe('a finish-error stream chunk ends the turn as error, not completed', ()
send(agent, 'go')
await waitForIdle(ctx, agent)
expect(reasons).toEqual([{ kind: 'error', step: 1, message: 'provider 401', code: 'AUTH' }])
expect(reasons).toEqual([{ kind: 'error', step: 1, failure }])
const events = [...agent.session.events]
// The durable failure lives on turn/end.reason (with the failing step), not
// a standalone error event.
const turnEnd = events.find(event => event.type === 'turn/end')
expect(turnEnd?.type === 'turn/end' && turnEnd.data.reason).toEqual({ kind: 'error', step: 1, message: 'provider 401', code: 'AUTH' })
expect(turnEnd?.type === 'turn/end' && turnEnd.data.reason).toEqual({ kind: 'error', step: 1, failure })
// A failed step must not synthesize an assistant message.
expect(events.some(event => event.type === 'assistant/message')).toBe(false)
})
it('translates finish {kind:aborted} into a turn error coded ABORTED', async () => {
const abortedStream: StreamChunk[] = [
{ type: 'finish', reason: { kind: 'aborted' } },
{ type: 'finish', reason: { kind: 'aborted', failure: { message: 'model stream aborted', code: 'ABORTED' } } },
]
const adapter = new MockAdapter([abortedStream])
const ctx = await harness(adapter)
@@ -983,13 +990,13 @@ describe('a finish-error stream chunk ends the turn as error, not completed', ()
send(agent, 'go')
await waitForIdle(ctx, agent)
expect(reasons).toEqual([{ kind: 'error', step: 1, message: 'model stream aborted', code: 'ABORTED' }])
expect(reasons).toEqual([{ kind: 'error', step: 1, failure: { message: 'model stream aborted', code: 'ABORTED' } }])
expect([...agent.session.events].some(event => event.type === 'assistant/message')).toBe(false)
})
it('handles a finish error without a code (code key omitted)', async () => {
const errorStream: StreamChunk[] = [
{ type: 'finish', reason: { kind: 'error', message: 'codeless failure' } },
{ type: 'finish', reason: { kind: 'error', failure: { message: 'codeless failure', code: 'UNKNOWN' } } },
]
const adapter = new MockAdapter([errorStream])
const ctx = await harness(adapter)
@@ -1001,7 +1008,7 @@ describe('a finish-error stream chunk ends the turn as error, not completed', ()
send(agent, 'go')
await waitForIdle(ctx, agent)
expect(reasons).toEqual([{ kind: 'error', step: 1, message: 'codeless failure' }])
expect(reasons).toEqual([{ kind: 'error', step: 1, failure: { message: 'codeless failure', code: 'UNKNOWN' } }])
})
})
@@ -1121,7 +1128,7 @@ describe('turn and step boundary recovery', () => {
})
it('a one-shot turn/end validation failure preserves the earlier turn error on retry', async () => {
const errorStream: StreamChunk[] = [{ type: 'finish', reason: { kind: 'error', message: 'provider failed' } }]
const errorStream: StreamChunk[] = [{ type: 'finish', reason: { kind: 'error', failure: { message: 'provider failed', code: 'UNKNOWN' } } }]
const adapter = new MockAdapter([errorStream])
const ctx = await balancedHarness(adapter)
const agent = ctx.agentLoop.create(SessionId('a-turnend-veto'), { provider: 'mock', model: 'mock' })
@@ -1151,7 +1158,7 @@ describe('turn and step boundary recovery', () => {
const turnEnd = agent.session.events.findLast(event => event.type === 'turn/end')
expect(turnEnd?.type === 'turn/end' && turnEnd.data.reason).toMatchObject({
kind: 'error',
message: 'provider failed',
failure: { message: 'provider failed', code: 'UNKNOWN' },
})
})
@@ -1187,7 +1194,7 @@ describe('turn and step boundary recovery', () => {
it('a throwing agent/error listener during a step-error path still balances the turn, loop survives', async () => {
// Listener failure cannot interrupt error finalization or the next turn.
const errorStream: StreamChunk[] = [{ type: 'finish', reason: { kind: 'error', message: 'provider 500' } }]
const errorStream: StreamChunk[] = [{ type: 'finish', reason: { kind: 'error', failure: { message: 'provider 500', code: 'SERVER' } } }]
const adapter = new MockAdapter([errorStream, textResponse('turn 2 ok')])
const ctx = await balancedHarness(adapter)
const agent = ctx.agentLoop.create(SessionId('a-errorlistener'), { provider: 'mock', model: 'mock' })
@@ -1203,7 +1210,11 @@ describe('turn and step boundary recovery', () => {
expect(c.turnStart).toBe(1)
expect(c.turnEnd).toBe(1)
expect(c.stepStart).toBe(c.stepEnd)
expect(c.lastTurnEnd?.type === 'turn/end' && c.lastTurnEnd.data.reason).toMatchObject({ kind: 'error', step: 1, message: 'provider 500' })
expect(c.lastTurnEnd?.type === 'turn/end' && c.lastTurnEnd.data.reason).toMatchObject({
kind: 'error',
step: 1,
failure: { message: 'provider 500', code: 'SERVER' },
})
// loop survives: a second turn runs to completion (invariants oracle would
// throw on its turn/start if turn 1 had been left open).
@@ -1348,7 +1359,7 @@ describe('turn and step boundary recovery', () => {
it('a throwing step/end observer cannot interrupt error finalization', async () => {
// Observer failure after step/end commit cannot interrupt turn finalization.
const errorStream: StreamChunk[] = [{ type: 'finish', reason: { kind: 'error', message: 'provider 500' } }]
const errorStream: StreamChunk[] = [{ type: 'finish', reason: { kind: 'error', failure: { message: 'provider 500', code: 'SERVER' } } }]
const adapter = new MockAdapter([errorStream, textResponse('turn 2 ok')])
const ctx = await harness(adapter)
const agent = ctx.agentLoop.create(SessionId('a-stependthrow'), { provider: 'mock', model: 'mock' })

View File

@@ -187,7 +187,9 @@ describe('toError normalization', () => {
// String() of { code: 500 } is '[object Object]'
expect(errors[0]!.message).toBe('[object Object]')
const turnEnd = agent.session.events.find(e => e.type === 'turn/end')
expect(turnEnd?.type === 'turn/end' && turnEnd.data.reason.kind === 'error' && turnEnd.data.reason.code).toBe('UNKNOWN')
expect(turnEnd?.type === 'turn/end' && turnEnd.data.reason.kind === 'error'
&& ('failure' in turnEnd.data.reason ? turnEnd.data.reason.failure.code : turnEnd.data.reason.code))
.toBe('UNKNOWN')
})
})
@@ -218,7 +220,8 @@ describe('coded error data emission', () => {
const turnEnd = agent.session.events.find(e => e.type === 'turn/end')
expect(turnEnd).toBeDefined()
if (turnEnd?.type === 'turn/end' && turnEnd.data.reason.kind === 'error') {
expect(turnEnd.data.reason.code).toBe('RATE_LIMIT')
expect('failure' in turnEnd.data.reason ? turnEnd.data.reason.failure.code : turnEnd.data.reason.code)
.toBe('RATE_LIMIT')
}
})
})

View File

@@ -3,10 +3,12 @@ import { Context } from 'cordis'
import LlmService, {
CallId,
CONTEXT_WINDOW_EXCEEDED_CODE,
HarnessError,
LlmAdapter,
LlmError,
ProviderRequestId,
} from '@deepseek-ai/dsh-llm'
import type { GenerateOptions, StreamChunk } from '@deepseek-ai/dsh-llm'
import type { GenerateOptions, LlmFailure, StreamChunk } from '@deepseek-ai/dsh-llm'
import SessionStore, { SessionId } from '@deepseek-ai/dsh-session'
import SystemPrompt from '@deepseek-ai/dsh-system-prompt'
import ToolRegistry, { defineTool } from '@deepseek-ai/dsh-tools'
@@ -258,16 +260,17 @@ describe('agent post-step and request-error lifecycle', () => {
it.each([
['thrown', contextError()],
['in-band', [{ type: 'finish', reason: { kind: 'error', message: 'too large', code: CONTEXT_WINDOW_EXCEEDED_CODE } }] satisfies StreamChunk[]],
['in-band', [{ type: 'finish', reason: { kind: 'error', failure: { message: 'too large', code: CONTEXT_WINDOW_EXCEEDED_CODE, status: 400 } } }] satisfies StreamChunk[]],
] as const)('recovers a %s request failure in a new reconstructable step', async (_style, failure) => {
const adapter = new FailureScriptAdapter([failure, textResponse('recovered')])
const ctx = await harness(adapter)
const agent = ctx.agentLoop.create(SessionId(`recover-${_style}`), { provider: 'mock', model: 'mock' })
const attempts: number[] = []
ctx.on('agent/request-error', async (subject, turn, step, error, attempt) => {
ctx.on('agent/request-error', async (subject, turn, step, error, facts, history) => {
expect(subject).toBe(agent)
expect({ turn, step, code: error.code }).toEqual({ turn: 1, step: 1, code: CONTEXT_WINDOW_EXCEEDED_CODE })
attempts.push(attempt)
expect(facts.code).toBe(CONTEXT_WINDOW_EXCEEDED_CODE)
attempts.push(history.length)
subject.session.append('context/message', {
content: [{ type: 'text', text: 'RECOVERY SURFACE MUTATION' }],
source: { kind: 'plugin', plugin: 'test-recovery' },
@@ -295,7 +298,7 @@ describe('agent post-step and request-error lifecycle', () => {
const agent = ctx.agentLoop.create(SessionId(`stream-plugin-${_name.replaceAll(' ', '-')}`), { provider: 'mock', model: 'mock' })
let recoveries = 0
install(ctx)
ctx.on('agent/request-error', async (_agent, _turn, _step, _error, _attempt, _signal, next) => {
ctx.on('agent/request-error', async (_agent, _turn, _step, _error, _failure, _history, _signal, next) => {
recoveries += 1
return next()
})
@@ -326,7 +329,7 @@ describe('agent post-step and request-error lifecycle', () => {
})
const agent = ctx.agentLoop.create(SessionId('nested-stream-not-recoverable'), { provider: 'mock', model: 'mock' })
let recoveries = 0
ctx.on('agent/request-error', async (_agent, _turn, _step, _error, _attempt, _signal, next) => {
ctx.on('agent/request-error', async (_agent, _turn, _step, _error, _failure, _history, _signal, next) => {
recoveries += 1
return next()
})
@@ -359,7 +362,7 @@ describe('agent post-step and request-error lifecycle', () => {
}
const agent = ctx.agentLoop.create(SessionId(`${boundary}-not-recoverable`), { provider: 'mock', model: 'mock' })
let recoveries = 0
ctx.on('agent/request-error', async (_agent, _turn, _step, _error, _attempt, _signal, next) => {
ctx.on('agent/request-error', async (_agent, _turn, _step, _error, _failure, _history, _signal, next) => {
recoveries += 1
return next()
})
@@ -387,7 +390,7 @@ describe('agent post-step and request-error lifecycle', () => {
}
const agent = ctx.agentLoop.create(SessionId(`${failure}-not-recoverable`), { provider: 'mock', model: 'mock' })
let recoveries = 0
ctx.on('agent/request-error', async (_agent, _turn, _step, _error, _attempt, _signal, next) => {
ctx.on('agent/request-error', async (_agent, _turn, _step, _error, _failure, _history, _signal, next) => {
recoveries += 1
return next()
})
@@ -406,7 +409,7 @@ describe('agent post-step and request-error lifecycle', () => {
const ctx = await harness(makeAdapter(original))
const agent = ctx.agentLoop.create(SessionId(`identity-${_name.replaceAll(' ', '-')}`), { provider: 'mock', model: 'mock' })
let seen: Error | undefined
ctx.on('agent/request-error', async (_agent, _turn, _step, error, _attempt, _signal, next) => {
ctx.on('agent/request-error', async (_agent, _turn, _step, error, _failure, _history, _signal, next) => {
seen = error
return next()
})
@@ -417,12 +420,90 @@ describe('agent post-step and request-error lifecycle', () => {
expect(seen).toBe(original)
})
it('keeps an adapter error with a hostile message accessor on the recovery path', async () => {
const original = Object.defineProperty(new HarnessError('provider failed', 'SERVER'), 'message', {
get() { throw new Error('SDK message accessor trap') },
})
const ctx = await harness(new SynchronousDispatchFailureAdapter(original))
const agent = ctx.agentLoop.create(SessionId('hostile-message-recovery'), { provider: 'mock', model: 'mock' })
let seenError: Error | undefined
let seenFailure: LlmFailure | undefined
ctx.on('agent/request-error', async (_agent, _turn, _step, error, failure, _history, _signal, next) => {
seenError = error
seenFailure = failure
return next()
})
send(agent)
await waitForIdle(ctx, agent)
expect(seenError).toBe(original)
expect(seenFailure).toEqual({ message: 'LLM adapter failed', code: 'SERVER' })
expect(agent.session.events.at(-1)).toMatchObject({
type: 'turn/end',
data: { reason: { kind: 'error', failure: { message: 'LLM adapter failed', code: 'SERVER' } } },
})
})
it('passes structured facts beside the original Error and records its cause chain on exhaustion', async () => {
const original = new LlmError('provider busy', 'RATE_LIMIT', {
cause: new Error('upstream connection reset'),
status: 429,
providerRetryAfterMs: 2_000,
requestId: ProviderRequestId('req-9'),
})
Object.freeze(original)
const ctx = await harness(new SynchronousDispatchFailureAdapter(original))
const agent = ctx.agentLoop.create(SessionId('structured-request-failure'), { provider: 'mock', model: 'mock' })
let seenError: Error | undefined
let seenFailure: LlmFailure | undefined
let seenHistory: readonly LlmFailure[] | undefined
ctx.on('agent/request-error', async (
_agent, _turn, _step, error, failure, history, _signal, next,
) => {
seenError = error
seenFailure = failure
seenHistory = history
return next()
})
send(agent)
await waitForIdle(ctx, agent)
expect(seenError).toBe(original)
expect(seenFailure).toEqual({
message: 'provider busy',
code: 'RATE_LIMIT',
status: 429,
providerRetryAfterMs: 2_000,
requestId: ProviderRequestId('req-9'),
})
expect(seenHistory).toEqual([])
expect(Object.isFrozen(seenHistory)).toBe(true)
expect(agent.session.events.at(-1)).toMatchObject({
type: 'turn/end',
data: {
reason: {
kind: 'error',
step: 1,
failure: {
message: 'provider busy: upstream connection reset',
code: 'RATE_LIMIT',
status: 429,
providerRetryAfterMs: 2_000,
requestId: ProviderRequestId('req-9'),
},
},
},
})
})
it('classifies iterator construction and explicit NO_ADAPTER as model-request failures', async () => {
for (const scenario of ['iterator', 'no-adapter'] as const) {
const ctx = scenario === 'iterator' ? await harness(new IteratorConstructionFailureAdapter()) : await harness()
const agent = ctx.agentLoop.create(SessionId(`request-boundary-${scenario}`), { provider: 'mock', model: 'mock' })
let seen = ''
ctx.on('agent/request-error', async (_agent, _turn, _step, error, _attempt, _signal, next) => {
ctx.on('agent/request-error', async (_agent, _turn, _step, error, _failure, _history, _signal, next) => {
seen = error.code ?? ''
return next()
})
@@ -436,14 +517,17 @@ describe('agent post-step and request-error lifecycle', () => {
const capped = new FailureScriptAdapter([contextError('first overflow'), contextError('second overflow')])
const cappedCtx = await harness(capped)
const cappedAgent = cappedCtx.agentLoop.create(SessionId('retry-cap'), { provider: 'mock', model: 'mock' })
const cappedAttempts: number[] = []
cappedCtx.on('agent/request-error', async (_agent, _turn, _step, _error, attempt, _signal, next) => {
cappedAttempts.push(attempt)
return attempt < 1 ? { action: 'retry' } : next()
const cappedHistories: string[][] = []
cappedCtx.on('agent/request-error', async (
_agent, _turn, _step, _error, _failure, history, _signal, next,
) => {
const codes = history.map(entry => entry.code)
cappedHistories.push(codes)
return codes.length < 1 ? { action: 'retry' } : next()
})
send(cappedAgent)
await waitForIdle(cappedCtx, cappedAgent)
expect(cappedAttempts).toEqual([0, 1])
expect(cappedHistories).toEqual([[], [CONTEXT_WINDOW_EXCEEDED_CODE]])
const reset = new FailureScriptAdapter([
contextError('first overflow'),
@@ -458,14 +542,16 @@ describe('agent post-step and request-error lifecycle', () => {
async execute() { return [{ type: 'text', text: 'worked' }] },
}))
const resetAgent = resetCtx.agentLoop.create(SessionId('retry-reset'), { provider: 'mock', model: 'mock' })
const resetAttempts: { step: number; attempt: number }[] = []
resetCtx.on('agent/request-error', async (_agent, _turn, step, _error, attempt, _signal, next) => {
resetAttempts.push({ step, attempt })
return resetAttempts.length === 1 ? { action: 'retry' } : next()
const resetHistories: { step: number; codes: string[] }[] = []
resetCtx.on('agent/request-error', async (
_agent, _turn, step, _error, _failure, history, _signal, next,
) => {
resetHistories.push({ step, codes: history.map(entry => entry.code) })
return resetHistories.length === 1 ? { action: 'retry' } : next()
})
send(resetAgent)
await waitForIdle(resetCtx, resetAgent)
expect(resetAttempts).toEqual([{ step: 1, attempt: 0 }, { step: 3, attempt: 0 }])
expect(resetHistories).toEqual([{ step: 1, codes: [] }, { step: 3, codes: [] }])
})
it('preserves the original provider error when recovery throws', async () => {
@@ -479,7 +565,7 @@ describe('agent post-step and request-error lifecycle', () => {
expect(agent.session.events.at(-1)).toMatchObject({
type: 'turn/end',
data: { reason: { kind: 'error', message: 'original overflow', code: CONTEXT_WINDOW_EXCEEDED_CODE } },
data: { reason: { kind: 'error', failure: { message: 'original overflow', code: CONTEXT_WINDOW_EXCEEDED_CODE } } },
})
})
@@ -489,7 +575,7 @@ describe('agent post-step and request-error lifecycle', () => {
const agent = ctx.agentLoop.create(SessionId(`${action}-recovery`), { provider: 'mock', model: 'mock' })
let entered!: () => void
const recoveryEntered = new Promise<void>((resolve) => { entered = resolve })
ctx.on('agent/request-error', async (_agent, _turn, _step, _error, _attempt, signal) => {
ctx.on('agent/request-error', async (_agent, _turn, _step, _error, _failure, _history, signal) => {
entered()
await new Promise<void>((resolve) => {
signal.addEventListener('abort', () => { resolve() }, { once: true })

View File

@@ -44,7 +44,7 @@ Agent *creation* is provided by the plugin implementing `AgentFactory` (`dsh-age
The lifecycle edges have two important local caveats. `agent/created` runs after scoped setup and after both session and agent registry entries exist. Setup is trusted composition-only code; the immediately following non-vetoing `agent/session-start` notification is the first supported startup injection point. `agent/disposed` always means the exact agent has left the registry. AgentLoop emits it after its driver is quiescent, while ordered teardown may still be detaching the session and unwinding the scope; custom agents registered directly own any stronger driver-ordering contract themselves.
Most interception points are cooperative waterfalls returning seam-specific decisions. `agent/pre-step` and `agent/post-step` are serial checkpoints around a step's durable work, while `agent/request-error` is the failed-model-request recovery waterfall: a retry opens a new numbered step after the failed step closes. `agent/turn-stop` is the terminal serial fold: it runs after ordinary continuation and steering folding, and a returned stop remains in force through turn close and flush so later steering cannot create an extra step or turn. Ordinary queued prompts remain intact. Effective broad cancellation first emits the observe-only `agent/cancel-requested` with its resolved reason, then clears queues and aborts; notification failures are contained and cannot veto the stop. The full rationale for scoped dispatch and terminal settlement is in the [agent-scope runtime-design Agent Note](../../../.agents/notes/implemented/architecture/2026-07-12-agent-scope-runtime-design.md#three-execution-boundaries-are-deliberately-one-way).
Most interception points are cooperative waterfalls returning seam-specific decisions. `agent/pre-step` and `agent/post-step` are serial checkpoints around a step's durable work, while `agent/request-error` is the failed-model-request recovery waterfall: it receives the exact error, normalized failure facts, immutable prior-retried facts, and signal after the failed step closes; a retry opens a new numbered step. `agent/turn-stop` is the terminal serial fold: it runs after ordinary continuation and steering folding, and a returned stop remains in force through turn close and flush so later steering cannot create an extra step or turn. Ordinary queued prompts remain intact. Effective broad cancellation first emits the observe-only `agent/cancel-requested` with its resolved reason, then clears queues and aborts; notification failures are contained and cannot veto the stop. The full rationale for scoped dispatch and terminal settlement is in the [agent-scope runtime-design Agent Note](../../../.agents/notes/implemented/architecture/2026-07-12-agent-scope-runtime-design.md#three-execution-boundaries-are-deliberately-one-way).
`PromptDecision.additionalContexts` is an array so every injected context keeps its own source and metadata. A `ContinuationDecision` reason is narrower: it becomes a `steering/message`, not a `context/message`, and therefore carries only content and source.

View File

@@ -7,7 +7,7 @@
import type { Context } from 'cordis'
import type { Scoped } from '@deepseek-ai/dsh-scope'
import type { ContentBlock, LlmCallConfig, Message, MessageSource } from '@deepseek-ai/dsh-llm'
import type { ContentBlock, LlmCallConfig, LlmFailure, Message, MessageSource } from '@deepseek-ai/dsh-llm'
import type { JsonValue, Session, SessionId } from '@deepseek-ai/dsh-session'
import type {} from '@deepseek-ai/dsh-system-prompt'
declare module '@deepseek-ai/dsh-system-prompt' {
@@ -286,12 +286,13 @@ declare module 'cordis' {
* @param turn - the open turn number.
* @param step - the failed step number.
* @param error - the original model-request failure.
* @param retryAttempt - zero-based number of prior recovery retries.
* @param failure - serializable facts normalized at the final adapter boundary.
* @param priorFailures - immutable failures that already authorized another request in this consecutive sequence.
* @param signal - the turn abort signal.
* Scope-filtered dispatch (`@deepseek-ai/dsh-scope`): agent-scoped listeners receive only that agent.
* @mode waterfall
*/
'agent/request-error'(this: Scoped<Agent>, agent: Agent, turn: number, step: number, error: RequestError, retryAttempt: number, signal: AbortSignal, next: () => Promise<RequestErrorDecision>): Promise<RequestErrorDecision>
'agent/request-error'(this: Scoped<Agent>, agent: Agent, turn: number, step: number, error: RequestError, failure: LlmFailure, priorFailures: readonly LlmFailure[], signal: AbortSignal, next: () => Promise<RequestErrorDecision>): Promise<RequestErrorDecision>
/**
* Override whether the turn continues. The default continues after tool
* calls or steering and stops otherwise; a continue reason becomes steering.

View File

@@ -60,11 +60,11 @@ Durable values need one accepted representation, not a check followed by a secon
### Session event vocabulary (`types.ts`)
The append-only log's event types, enumerated member by member — payloads, surface badges, provenance — in the generated [persistence log event catalog](../../../docs/persistence-catalog.md). Token usage and provider/model/replay provenance ride on `assistant/message`; an operational error's step is on `turn/end.reason` for `kind: 'error'`.
The append-only log's event types, enumerated member by member — payloads, surface badges, provenance — in the generated [persistence log event catalog](../../../docs/persistence-catalog.md). Token accounting reads per-step `assistant/chunk { type: 'usage' }` records and treats `assistant/message.usage` as the committed-step fallback when no usage chunk exists; failed model-request attempts have no assistant message. Provider/model/replay provenance rides on `assistant/message`; an operational error's step is on `turn/end.reason` for `kind: 'error'`, with structured provider facts for a final model-request failure.
Merge-extensible via `SessionEventMap` — a plugin declaration-merges its own types (the compaction seam's `compact/*`, the hook bridges' `hook/*`); merged members appear in the same catalog.
Merge-extensible via `SessionEventMap` — a plugin declaration-merges its own types (the compaction seam's `compact/*`, bounded recovery's non-surface `llm/retry`, the hook bridges' `hook/*`); merged members appear in the same catalog.
Also defines `TurnTriggerMap` and `TurnEndReasonMap` (merge-extensible sum types for typed turn boundaries — `kind`-tagged instead of strings).
Also defines `TurnTriggerMap` and `TurnEndReasonMap` (merge-extensible sum types for typed turn boundaries — `kind`-tagged instead of strings). A final model-request error retains one structured `LlmFailure`; other turn errors retain message/code, and both identify the failed step.
Every `SessionEvent` carries two optional top-level fields (structural metadata):

View File

@@ -1,5 +1,5 @@
import type { Branded } from '@deepseek-ai/dsh-brand'
import type { AssistantProvenance, CallId, ContentBlock, LlmCallConfig, Message, MessageSource, StreamChunk, TokenUsage, ToolSchema } from '@deepseek-ai/dsh-llm'
import type { AssistantProvenance, CallId, ContentBlock, LlmCallConfig, LlmFailure, Message, MessageSource, StreamChunk, TokenUsage, ToolSchema } from '@deepseek-ai/dsh-llm'
import type { JsonValue } from './json.ts'
/** Identifies one session in the store (and its persistence artifacts). */
@@ -106,9 +106,13 @@ export interface TurnEndReasonMap {
* The turn failed: a step threw or the model reported a failure. `step` is the
* step number the failure occurred on (the operational error's location — the
* single durable record of an in-turn failure; live diagnostics also fire via
* `agent/error`). `code` is the error's code when one was attached.
* `agent/error`). Final model-request failures retain their normalized facts
* as one `failure`; other turn failures retain their live Error message/code.
*/
error: { kind: 'error'; step: number; message: string; code?: string }
error: { kind: 'error'; step: number } & (
| { failure: LlmFailure; message?: never; code?: never }
| { message: string; code?: string; failure?: never }
)
disposed: { kind: 'disposed' }
/** At least one step reached its output-token ceiling, even if a plugin continued the turn. */
'max-tokens': { kind: 'max-tokens' }

View File

@@ -37,6 +37,7 @@ Because the package wires no logger entry, an ACP leaf has **nothing to get wron
| `skills` | owner defaults | registry-cache, local-provider, and model-facing skill-tool config, routed through `dsh-agent-spine-demo` |
| `toolBash` | owner defaults | model-facing bash config routed through `dsh-agent-spine-demo`, including bash's producer-local `enableRunInBackground` |
| `toolTasks` | owner defaults | generic `task_output` wait bounds routed through `dsh-agent-spine-demo` |
| `llmRetry` | owner defaults | bounded transient model-request retry policy routed through `dsh-agent-spine-demo` |
| `persistenceRoot` | `./.sessions` | the JSONL backend's root directory |
| `persistenceCompression` | `'zstd'` | JSONL artifact encoding (`'zstd'` or raw `'none'`) |

View File

@@ -61,6 +61,8 @@ export interface Config {
toolBash?: NonNullable<agentCore.Config['toolBash']>
/** Generic background-task controls forwarded through agent-core; set false to omit their tool surface. */
toolTasks?: NonNullable<agentCore.Config['toolTasks']>
/** Bounded transient model-request retry policy forwarded through agent-core. */
llmRetry?: NonNullable<agentCore.Config['llmRetry']>
}
// Each front door owns a complete, directly readable config schema; extracting
@@ -83,6 +85,7 @@ export const Config: z<Config> = z.object({
skills: agentCore.SkillConfigSchema,
toolBash: agentCore.ToolBashConfigSchema,
toolTasks: z.union([z.const(false), agentCore.ToolTasksConfigSchema]),
llmRetry: agentCore.LlmRetryConfigSchema,
})
/* jscpd:ignore-end */

View File

@@ -17,6 +17,7 @@ Read this package for the whole plugin tree and its composition order.
@deepseek-ai/dsh-skill skill provider registry
@deepseek-ai/dsh-skill-local local filesystem skill provider
@deepseek-ai/dsh-agent agent registry + initiator scope + agent/* events
@deepseek-ai/dsh-llm-retry bounded transient request retry policy
@deepseek-ai/dsh-tasks generic background-task registry
@deepseek-ai/dsh-invariants dev-mode event-contract assertions
@deepseek-ai/dsh-tool-bash the model-facing bash schema
@@ -42,19 +43,21 @@ This is the [interface/implementation/consumer seam](../../../.agents/notes/impl
```ts
import type { Config } from '@deepseek-ai/dsh-agent-spine-demo'
// { agents?, maxParallelToolCalls?, persona?, toolOrder?, tools?, dshHome?, skills?, workspaceContext, toolBash?, toolTasks? }
// { agents?, maxParallelToolCalls?, persona?, toolOrder?, tools?, dshHome?, skills?, workspaceContext, toolBash?, toolTasks?, llmRetry? }
// workspaceContext requires { maxBytes } or false; the other owner schemas supply defaults.
```
The bundle FORWARDS each field to the child that owns it: `agents` and `maxParallelToolCalls` to `agent-loop` (`agents` defaults to `[]`; the cap defaults there), so each app supplies its own pre-created agents — TUI and headless apps pre-create `main`, while the ACP app creates agents on demand at `session/new`; `persona` and `toolOrder` to `dsh-system-prompt`; `tools` to the tool registry for its presentation mode; `skills.registry`, `skills.local`, and `skills.tool` to the skill registry, local provider, and model-facing consumer; the required `workspaceContext` choice to `dsh-workspace-context` (`{ maxBytes }` enables loading and `false` disables it); and `toolBash`/`toolTasks` to the two model-facing tool plugins the bundle owns. Set `skills.enabled: false` to omit both the local provider and model-facing skill tool, and set `toolTasks: false` to retain the task service for foreground producers without exposing `task_output` / `task_list` / `task_kill`. It resolves `dshHome` once through [`@deepseek-ai/dsh-home`](../../util/home/README.md) and forwards that absolute value to tool-bash's managed environment and enabled local skill discovery. An absent top-level `dshHome` adopts `skills.local.dshHome`; supplying both with different resolved paths fails loudly. `toolBash.enableRunInBackground` controls only the bash producer; independently loaded producers keep their own config. Workspace instructions register before the skill catalog so their session-prefix message renders first. App packages use `pickSpineConfig()` to copy only these bundle-owned fields.
The bundle FORWARDS each field to the child that owns it: `agents` and `maxParallelToolCalls` to `agent-loop` (`agents` defaults to `[]`; the cap defaults there), so each app supplies its own pre-created agents — TUI and headless apps pre-create `main`, while the ACP app creates agents on demand at `session/new`; `llmRetry` to the bounded retry policy; `persona` and `toolOrder` to `dsh-system-prompt`; `tools` to the tool registry for its presentation mode; `skills.registry`, `skills.local`, and `skills.tool` to the skill registry, local provider, and model-facing consumer; the required `workspaceContext` choice to `dsh-workspace-context` (`{ maxBytes }` enables loading and `false` disables it); and `toolBash`/`toolTasks` to the two model-facing tool plugins the bundle owns. Set `skills.enabled: false` to omit both the local provider and model-facing skill tool, and set `toolTasks: false` to retain the task service for foreground producers without exposing `task_output` / `task_list` / `task_kill`. It resolves `dshHome` once through [`@deepseek-ai/dsh-home`](../../util/home/README.md) and forwards that absolute value to tool-bash's managed environment and enabled local skill discovery. An absent top-level `dshHome` adopts `skills.local.dshHome`; supplying both with different resolved paths fails loudly. `toolBash.enableRunInBackground` controls only the bash producer; independently loaded producers keep their own config. Workspace instructions register before the skill catalog so their session-prefix message renders first. App packages use `pickSpineConfig()` to copy only these bundle-owned fields.
## Why a code bundle, not a shared YAML include
A YAML include can deduplicate config but cannot own a bin or provide front-door defaults. App packages make stdout-safe ACP wiring the default, though a leaf can still add an unsafe logger. Bundle children register services in the root isolate-keyed store, so injected leaf siblings see them without load-order coupling.
The bounded retry policy may repeat a transiently failed request in a new numbered step. Retry status and failed partial chunks stay outside model history, each provider attempt can still incur billing, front doors derive usage across every logged step, and the reconstructed request preserves the prior prefix for provider cache reuse.
## Model Experience
Indirectly, through `dsh-system-prompt`, `dsh-tool-skill`, `dsh-tool-bash`, and `dsh-tools`, which this bundle mounts without adding model-bound wrapper content.
Indirectly, through `dsh-system-prompt`, `dsh-tool-skill`, `dsh-tool-bash`, `dsh-tools`, and `dsh-llm-retry`, which this bundle mounts without adding model-bound wrapper content.
#### KV Cache effect

View File

@@ -1,6 +1,6 @@
{
"name": "@deepseek-ai/dsh-agent-spine-demo",
"description": "The default executor-less/UI-less agent spine as one Cordis bundle plugin (timer + llm + sessions + system-prompt + tools + skills + agents + tasks + invariants + tool-bash + workspace-context + tool-skill + tool-tasks + agent-loop)",
"description": "The default executor-less/UI-less agent spine as one Cordis bundle plugin (timer + llm + sessions + system-prompt + tools + skills + agents + bounded retry + tasks + invariants + tool-bash + workspace-context + tool-skill + tool-tasks + agent-loop)",
"version": "0.0.1",
"private": true,
"type": "module",
@@ -28,6 +28,7 @@
"@deepseek-ai/dsh-invariants": "^0.0.1",
"@deepseek-ai/dsh-home": "^0.0.1",
"@deepseek-ai/dsh-llm": "^0.0.1",
"@deepseek-ai/dsh-llm-retry": "^0.0.1",
"@deepseek-ai/dsh-workspace-context": "^0.0.1",
"@deepseek-ai/dsh-session": "^0.0.1",
"@deepseek-ai/dsh-skill": "^0.0.1",
@@ -48,6 +49,7 @@
"@deepseek-ai/dsh-invariants": "workspace:^",
"@deepseek-ai/dsh-home": "workspace:^",
"@deepseek-ai/dsh-llm": "workspace:^",
"@deepseek-ai/dsh-llm-retry": "workspace:^",
"@deepseek-ai/dsh-workspace-context": "workspace:^",
"@deepseek-ai/dsh-session": "workspace:^",
"@deepseek-ai/dsh-skill": "workspace:^",

View File

@@ -25,6 +25,7 @@ import * as workspaceContext from '@deepseek-ai/dsh-workspace-context'
import * as toolSkill from '@deepseek-ai/dsh-tool-skill'
import * as toolTasks from '@deepseek-ai/dsh-tool-tasks'
import AgentLoop, { type Config as AgentLoopConfig } from '@deepseek-ai/dsh-agent-loop'
import * as llmRetry from '@deepseek-ai/dsh-llm-retry'
import { resolveDshHome } from '@deepseek-ai/dsh-home'
export const name = 'agent-spine-demo'
@@ -77,6 +78,8 @@ export interface Config {
toolBash?: toolBash.Config
/** Generic background-task controls; set false to keep the task service without model-facing task tools. */
toolTasks?: toolTasks.Config | false
/** Bounded transient model-request retry policy. */
llmRetry?: llmRetry.Config
}
/** The skill config schema exported for app packages that forward `skills`. */
@@ -93,6 +96,9 @@ export const ToolBashConfigSchema: z<toolBash.Config> = toolBash.Config
/** The task-control-tool config schema exported for app packages that forward `toolTasks`. */
export const ToolTasksConfigSchema: z<toolTasks.Config> = toolTasks.Config
/** The bounded LLM retry schema exported for app packages that forward `llmRetry`. */
export const LlmRetryConfigSchema: z<llmRetry.Config> = llmRetry.Config
/** Intersect the owners' schemas so validation + defaulting stay identical. */
export const Config = z.intersect([
AgentLoop.Config,
@@ -104,7 +110,8 @@ export const Config = z.intersect([
workspaceContext: z.union([z.const(false), workspaceContext.Config]).required(),
toolBash: ToolBashConfigSchema,
toolTasks: z.union([z.const(false), ToolTasksConfigSchema]),
}) as unknown as z<Pick<Config, 'tools' | 'dshHome' | 'skills' | 'workspaceContext' | 'toolBash' | 'toolTasks'>>,
llmRetry: LlmRetryConfigSchema,
}) as unknown as z<Pick<Config, 'tools' | 'dshHome' | 'skills' | 'workspaceContext' | 'toolBash' | 'toolTasks' | 'llmRetry'>>,
]) as unknown as z<Config>
/**
@@ -123,6 +130,7 @@ export function pickSpineConfig(config: Omit<Config, 'agents'>): Omit<Config, 'a
...config.skills !== undefined ? { skills: config.skills } : {},
...config.toolBash !== undefined ? { toolBash: config.toolBash } : {},
...config.toolTasks !== undefined ? { toolTasks: config.toolTasks } : {},
...config.llmRetry !== undefined ? { llmRetry: config.llmRetry } : {},
}
}
@@ -159,6 +167,7 @@ export function apply(ctx: Context, config: Config): void {
ctx.plugin(SkillLocal, Object.assign({}, config.skills?.local, { dshHome }))
}
ctx.plugin(AgentRegistry)
ctx.plugin(llmRetry, config.llmRetry ?? {})
ctx.plugin(TaskService)
ctx.plugin(invariants)
ctx.plugin(toolBash, Object.assign({}, config.toolBash, { dshHome }))

View File

@@ -10,7 +10,7 @@ import { agentEvents, type Agent } from '@deepseek-ai/dsh-agent'
import { SessionId } from '@deepseek-ai/dsh-session'
import LocalFileSystem from '@deepseek-ai/dsh-fs-local'
import { MockAdapter, textResponse } from '../../../core/agent-loop/tests/mock-adapter.ts'
import { CallId, type Message } from '@deepseek-ai/dsh-llm'
import { CallId, LlmAdapter, LlmError, type GenerateOptions, type Message, type StreamChunk } from '@deepseek-ai/dsh-llm'
import type { ToolExecution } from '@deepseek-ai/dsh-tools'
declare module '@deepseek-ai/dsh-tasks' {
@@ -101,6 +101,16 @@ function messageText(message: Message | undefined): string {
return message?.content.map(block => block.type === 'text' ? block.text : '').join('\n') ?? ''
}
class TransientOnceAdapter extends LlmAdapter {
requests = 0
async * stream(_options: GenerateOptions): AsyncIterable<StreamChunk> {
this.requests += 1
if (this.requests === 1) throw new LlmError('temporary outage', 'SERVER')
yield* textResponse('recovered by bundled policy')
}
}
describe('dsh-agent-spine-demo bundle', () => {
it('brings up the full default spine', async () => {
const ctx = await mount({ workspaceContext: false })
@@ -117,6 +127,37 @@ describe('dsh-agent-spine-demo bundle', () => {
await ctx.fiber.dispose()
})
it('loads and configures bounded request recovery for every bundled front door', async () => {
const adapter = new TransientOnceAdapter()
const ctx = await mount({
workspaceContext: false,
llmRetry: {
maxTransientRetries: 1,
initialDelayMs: 1,
maxDelayMs: 1,
jitterRatio: 0,
},
})
ctx.llm.registerAdapter(['mock'], adapter)
const handle = await ctx.agents.create({
sessionId: SessionId('bundled-retry-session'),
meta: { cwd: process.cwd() },
agentOptions: { provider: 'mock', model: 'mock' },
})
handle.agent.send([{ type: 'text', text: 'recover' }])
await waitForIdle(ctx, handle.agent)
expect(adapter.requests).toBe(2)
const retryEvents = handle.agent.session.events.filter(event => event.type === 'llm/retry')
expect(retryEvents).toHaveLength(1)
expect(retryEvents[0]?.data.retry).toBe(1)
expect(retryEvents[0]?.data.maxRetries).toBe(1)
expect(messageText(handle.agent.session.deriveMessages().at(-1))).toBe('recovered by bundled policy')
await handle.dispose()
await ctx.fiber.dispose()
})
it('includes the skill registry, local provider, and skill tool without builtin skills', async () => {
const ctx = await mount({ workspaceContext: false })
@@ -370,6 +411,7 @@ describe('dsh-agent-spine-demo bundle', () => {
skills: { enabled: false },
toolBash: { enableRunInBackground: false },
toolTasks: false as const,
llmRetry: { maxTransientRetries: 1, jitterRatio: 0 },
}
expect(agentCore.pickSpineConfig(appConfig)).toEqual({
@@ -381,6 +423,7 @@ describe('dsh-agent-spine-demo bundle', () => {
skills: appConfig.skills,
toolBash: appConfig.toolBash,
toolTasks: appConfig.toolTasks,
llmRetry: appConfig.llmRetry,
})
expect(agentCore.pickSpineConfig({ workspaceContext: false })).toEqual({ workspaceContext: false })
})

View File

@@ -47,6 +47,9 @@
{
"path": "../../core/agent-loop"
},
{
"path": "../../llm/llm-retry"
},
{
"path": "../../support/invariants"
},

View File

@@ -18,6 +18,7 @@ The package mounts no console logger, interactive UI, user-interaction service,
| `skills` | owner defaults | skill registry, local provider, and model-facing skill tool |
| `toolBash` | owner defaults | model-facing bash config, including this producer's background opt-in |
| `toolTasks` | owner defaults | generic `task_output` wait bounds |
| `llmRetry` | owner defaults | bounded transient model-request retry policy |
| `persistenceRoot` | `./.sessions` | JSONL session root |
| `persistenceCompression` | `'zstd'` | JSONL artifact encoding (`'zstd'` or raw `'none'`) |
| `workspaceContext` | required | workspace-instruction byte budget, or `false` to disable loading |
@@ -41,7 +42,7 @@ Loader configs with bare package specifiers require `node --expose-internals` or
### Output formats
- `text` writes the last assistant message containing text, followed by one newline.
- `json` writes one DSH-native result record: `{ type: "result", success, sessionId, turn, result, reason, usage? }`. `usage` sums every model step in the task turn.
- `json` writes one DSH-native result record: `{ type: "result", success, sessionId, turn, result, reason, usage? }`. `usage` sums each model step in the task turn once, including billed failed retry attempts that produced usage without a committed assistant message.
- `stream-json` writes each canonical event from the top-level session's task turn as `{ type: "session_event", sessionId, event }`, then the same result record. Child-agent activity appears only through the parent tool events and results.
Only `reason.kind === "completed"` exits successfully. Other durable turn endings still emit partial text or a result record, add a stderr diagnostic, and exit nonzero. Argument and boot failures leave stdout empty. SIGINT and SIGTERM cancel active work, await disposal, and exit 130 and 143 respectively.

View File

@@ -219,7 +219,7 @@ export async function runOneShot(ctx: Context, options: OneShotOptions): Promise
let targetTurn: number | undefined
let reason: TurnEndReason | undefined
let result = ''
let usage: TokenUsage | undefined
const usageByStep = new Map<number, TokenUsage>()
let outputError: Error | undefined
let resolveTurn!: () => void
let rejectTurn!: (error: Error) => void
@@ -254,9 +254,14 @@ export async function runOneShot(ctx: Context, options: OneShotOptions): Promise
targetTurn = event.data.turn
}
observe(session.id, event)
if (event.type === 'assistant/chunk'
&& event.data.turn === targetTurn
&& event.data.chunk.type === 'usage') {
usageByStep.set(event.data.step, event.data.chunk.usage)
}
if (event.type === 'assistant/message' && event.data.turn === targetTurn) {
result = assistantText(event) ?? result
if (event.data.usage !== undefined) usage = addUsage(usage, event.data.usage)
if (event.data.usage !== undefined) usageByStep.set(event.data.step, event.data.usage)
}
if (event.type === 'turn/end' && event.data.turn === targetTurn) {
reason = event.data.reason
@@ -294,6 +299,7 @@ export async function runOneShot(ctx: Context, options: OneShotOptions): Promise
}
await ctx.sessions.flush(agent.session)
if (outputError !== undefined) throw outputError
const usage = [...usageByStep.values()].reduce<TokenUsage | undefined>(addUsage, undefined)
return {
type: 'result',
success: reason.kind === 'completed',
@@ -365,7 +371,7 @@ export function formatTurnFailure(reason: TurnEndReason): string {
switch (reason.kind) {
case 'completed': return 'completed'
case 'aborted': return reason.reason === undefined ? 'was aborted' : `was aborted: ${reason.reason}`
case 'error': return `failed at step ${reason.step}: ${reason.message}`
case 'error': return `failed at step ${reason.step}: ${'failure' in reason ? reason.failure.message : reason.message}`
case 'disposed': return 'was disposed'
case 'max-tokens': return 'reached the model output-token limit'
case 'rejected': return `was rejected: ${reason.reason}`

View File

@@ -47,6 +47,8 @@ export interface Config {
toolBash?: NonNullable<agentCore.Config['toolBash']>
/** Generic background-task control-tool config forwarded through agent-spine-demo. */
toolTasks?: NonNullable<agentCore.Config['toolTasks']>
/** Bounded transient model-request retry policy forwarded through agent-spine-demo. */
llmRetry?: NonNullable<agentCore.Config['llmRetry']>
/** Controls automatic AGENTS.md/CLAUDE.md loading; configure a byte budget or set `false`. */
workspaceContext: agentCore.Config['workspaceContext']
}
@@ -68,6 +70,7 @@ export const Config: z<Config> = z.object({
tools: ToolRegistry.Config,
toolBash: agentCore.ToolBashConfigSchema,
toolTasks: z.union([z.const(false), agentCore.ToolTasksConfigSchema]),
llmRetry: agentCore.LlmRetryConfigSchema,
workspaceContext: z.union([z.const(false), workspaceContext.Config]).required(),
})
/* jscpd:ignore-end */

View File

@@ -70,6 +70,15 @@ function toolResponse(usage: TokenUsage): StreamChunk[] {
]
}
function failedResponse(usage: TokenUsage): StreamChunk[] {
return [
{ type: 'block-start', index: 0, blockType: 'text' },
{ type: 'text-delta', index: 0, text: 'discarded' },
{ type: 'usage', usage },
{ type: 'finish', reason: { kind: 'error', failure: { message: 'temporary', code: 'SERVER' } } },
]
}
function reasoningResponse(text: string): StreamChunk[] {
return [
{ type: 'block-start', index: 0, blockType: 'reasoning' },
@@ -98,6 +107,7 @@ async function harness(script: readonly ScriptEntry[]): Promise<Harness> {
persistenceRoot: root,
skills: { local: { dshHome: join(skillHome, '.dsh'), agentsHome: join(skillHome, '.agents') } },
workspaceContext: false,
llmRetry: { initialDelayMs: 1, maxDelayMs: 1, jitterRatio: 0 },
})
await new Promise(resolve => setTimeout(resolve, 80))
ctx.llm.registerAdapter(['mock'], new ScriptedAdapter(script))
@@ -323,6 +333,21 @@ describe('runOneShot and executeCli', () => {
})
})
it('counts a failed retry attempt once even though it has no assistant message', async () => {
const failed = { inputTokens: 11, outputTokens: 2, cacheReadTokens: 3 }
const recovered = { inputTokens: 7, outputTokens: 5, reasoningTokens: 4 }
const { ctx } = await harness([failedResponse(failed), textResponse('done', recovered)])
const result = await runOneShot(ctx, { task: 'task' })
expect(result.usage).toEqual({
inputTokens: 18,
outputTokens: 7,
cacheReadTokens: 3,
reasoningTokens: 4,
})
})
it('keeps the prior text when a later assistant message has no text blocks', async () => {
const { ctx } = await harness([
toolResponse({ inputTokens: 1, outputTokens: 1 }),
@@ -463,6 +488,7 @@ describe('formatTurnFailure', () => {
[{ kind: 'aborted' }, 'was aborted'],
[{ kind: 'aborted', reason: 'stop' }, 'was aborted: stop'],
[{ kind: 'error', step: 2, message: 'bad' }, 'failed at step 2: bad'],
[{ kind: 'error', step: 3, failure: { message: 'provider bad', code: 'SERVER' } }, 'failed at step 3: provider bad'],
[{ kind: 'disposed' }, 'was disposed'],
[{ kind: 'max-tokens' }, 'output-token limit'],
[{ kind: 'rejected', reason: 'policy' }, 'was rejected: policy'],

View File

@@ -32,7 +32,7 @@ The retained prompt names the JSON-quoted objective and `round/maxGoalRounds`, t
| `completed` with goal still active and armed | admit the next round, or block with code `round-limit` at the cap | yes |
| cancellation of a reserved/admitted goal round, or its `aborted` outcome | `paused` | no |
| cancellation with no goal-round attempt | keep durable phase; disarm activation | no |
| `error` with `RATE_LIMIT` | `blocked` with code `usage-limited` | no |
| `error` with `RATE_LIMIT` or `QUOTA` | `blocked` with code `usage-limited` | no |
| other `error`, `max-tokens`, or a non-stale prompt rejection | `blocked` with a diagnostic code and message | no |
| durability failure, disposal, interruption, or unknown future outcome | disarm or block for inspection | no |
@@ -67,5 +67,5 @@ Append-only within an epoch: each admitted round extends the existing conversati
- **No independent evaluator** — the model-facing goal policy decides when evidence is sufficient for completion and whether a blocker is semantically unchanged; evaluator-backed certification remains deferred.
- **Same-session execution only** — this package deliberately does not spawn a fresh agent, fork a session prefix, or implement Ralph-style independent attempts; that workflow belongs to its own plugin layer.
- **Accepted-queue unload race** — Cordis plugin unload is asynchronous. A goal prompt already accepted by the agent inbox can begin and consume its round before unload starts; teardown then cancels the request, disarms the goal, and awaits quiescence. No later round starts.
- **Round cap, not resource budget** — token, currency, time, and provider quota policies remain independent; `RATE_LIMIT` only maps an observed provider stop into the blocked reason code `usage-limited`.
- **Round cap, not resource budget** — token, currency, time, and provider quota policies remain independent; observed `RATE_LIMIT` and `QUOTA` stops only map into the blocked reason code `usage-limited`.
- **No abnormal auto-retry** — transient provider and persistence failures require a later human-authorized resume rather than an implicit retry policy.

View File

@@ -27,10 +27,13 @@ export function classifyGoalRound(reason: TurnEndReason, durable: boolean): Goal
return { kind: 'continue' }
case 'aborted':
return { kind: 'pause', reason: reason.reason ?? 'cancelled' }
case 'error':
return reason.code === 'RATE_LIMIT'
? { kind: 'blocked', code: 'usage-limited', message: reason.message }
: { kind: 'blocked', code: 'turn-error', message: reason.message }
case 'error': {
const code = reason.failure?.code ?? reason.code
const message = reason.failure?.message ?? reason.message ?? 'model request failed'
return code === 'RATE_LIMIT' || code === 'QUOTA'
? { kind: 'blocked', code: 'usage-limited', message }
: { kind: 'blocked', code: 'turn-error', message }
}
case 'max-tokens':
return { kind: 'blocked', code: 'max-tokens', message: 'model output reached max tokens' }
case 'rejected':

View File

@@ -6,7 +6,7 @@ import AgentLoop from '@deepseek-ai/dsh-agent-loop'
import { mountAgentLoopTestDependencies } from '@deepseek-ai/dsh-agent-loop-testkit'
import GoalService, { GoalId } from '@deepseek-ai/dsh-goal'
import type { GoalView } from '@deepseek-ai/dsh-goal'
import { LlmAdapter } from '@deepseek-ai/dsh-llm'
import { LlmAdapter, LlmError } from '@deepseek-ai/dsh-llm'
import type { GenerateOptions, StreamChunk } from '@deepseek-ai/dsh-llm'
import { SessionId } from '@deepseek-ai/dsh-session'
import type { TurnEndReason } from '@deepseek-ai/dsh-session'
@@ -127,6 +127,10 @@ describe('goal-round outcome policy', () => {
[{ kind: 'aborted' }, true, { kind: 'pause', reason: 'cancelled' }],
[{ kind: 'error', step: 1, message: 'slow down', code: 'RATE_LIMIT' }, true,
{ kind: 'blocked', code: 'usage-limited', message: 'slow down' }],
[{ kind: 'error', step: 1, failure: { message: 'credits exhausted', code: 'QUOTA' } }, true,
{ kind: 'blocked', code: 'usage-limited', message: 'credits exhausted' }],
[{ kind: 'error', step: 1, failure: { message: 'provider failed', code: 'SERVER' } }, true,
{ kind: 'blocked', code: 'turn-error', message: 'provider failed' }],
[{ kind: 'error', step: 1, message: 'broken' }, true,
{ kind: 'blocked', code: 'turn-error', message: 'broken' }],
[{ kind: 'max-tokens' }, true,
@@ -228,7 +232,7 @@ describe('same-session goal driving', () => {
})
it.each([
['rate limit', Object.assign(new Error('slow down'), { code: 'RATE_LIMIT' }), 'usage-limited'],
['rate limit', new LlmError('slow down', 'RATE_LIMIT'), 'usage-limited'],
['request error', new Error('provider broke'), 'turn-error'],
['max tokens', maxTokensResponse('unfinished'), 'max-tokens'],
] as const)('stops after a %s without an automatic retry', async (_label, response, code) => {

View File

@@ -6,7 +6,8 @@ The LLM seam and its provider adapters. The interface package (`llm`) owns the a
|---|---|---|
| `llm/` | Abstract LLM service + content-block vocabulary + chunk assembler | `ctx.llm` |
| `token-meter/` | Replay-aware request and surface token measurement | `ctx.tokenMeter` |
| `llm-retry/` | Bounded transient request retry policy | (listens to `agent/request-error`) |
| `llm-deepseek/` | DeepSeek API adapter (hand-rolled fetch/SSE) | (registers on `ctx.llm`) |
| `llm-pi-ai/` | Multi-provider adapter via `@earendil-works/pi-ai` | (registers on `ctx.llm`) |
The interface lives at `llm/llm/`; adapters and the reusable token meter are flat siblings under the group. Requests route by `provider`, while `model` is passed through to the selected adapter. A new provider adapter joins here and registers one or more provider routes on `ctx.llm` without touching the interface. See [twin LLM adapters](../../.agents/notes/implemented/architecture/2026-06-13-twin-llm-adapters.md) for the contract-validation origin of the two shipping implementations and the [replay token meter Agent Note](../../.agents/notes/implemented/architecture/2026-07-15-replay-token-meter-service.md) for measurement ownership.
The interface lives at `llm/llm/`; adapters, retry policy, and reusable token meter are flat siblings under the group. Requests route by `provider`, while `model` is passed through to the selected adapter. A new provider adapter joins here and registers one or more provider routes on `ctx.llm` without touching the interface. See [twin LLM adapters](../../.agents/notes/implemented/architecture/2026-06-13-twin-llm-adapters.md) for the contract-validation origin of the two shipping implementations and the [replay token meter Agent Note](../../.agents/notes/implemented/architecture/2026-07-15-replay-token-meter-service.md) for measurement ownership.

View File

@@ -16,6 +16,7 @@ The package root exposes the Cordis plugin contract and `DeepSeekAdapter`; wire
baseURL: !!js process.env.DEEPSEEK_BASE_URL # default: https://api.deepseek.com
thinking: enabled # optional; provider default is enabled
reasoningEffort: high # optional; high | max — omitted ⇒ not sent
streamIdleTimeoutMs: 300000 # optional; positive finite Node timer delay; five-minute default
models: # optional; defaults to V4 Flash and V4 Pro
- id: deepseek-v4-flash
name: DeepSeek V4 Flash
@@ -29,6 +30,8 @@ The plugin registers the single provider route `deepseek`. A request selects it
`thinking`/`reasoningEffort` are adapter-level request defaults serialized as the official top-level `thinking: {type}` / `reasoning_effort` wire fields. They live in adapter config (not `GenerateOptions`) to keep the core vocabulary provider-neutral.
`streamIdleTimeoutMs` bounds each outstanding provider read, including the initial `fetch`, without counting time the consumer spends between chunks. One stable abort signal reaches the request and body reader for the whole call; expiry stops the transport and throws `LlmError('TIMEOUT')`, while an earlier caller abort throws `LlmError('ABORTED')`. The adapter makes exactly one provider request per `stream()` call; agent-level retry is a separate plugin policy.
## App attribution
Every request carries the shared attribution header from dsh-llm's `attributionHeaders()` - the mandatory `User-Agent` baseline identifying the harness (see [dsh-llm § App attribution](../llm/README.md#app-attribution-attributionts)). Direct DeepSeek requests and OpenAI-compatible gateway requests get no provider-specific app-attribution headers under this adapter contract; OpenRouter app attribution is deferred to a future explicit OpenRouter adapter or mode.
@@ -42,11 +45,11 @@ Every request carries the shared attribution header from dsh-llm's `attributionH
## Errors
Non-2xx responses throw `LlmError` with stable codes: `AUTH` (401/403), `RATE_LIMIT` (429), `CONTEXT_WINDOW_EXCEEDED` (a 400 whose provider code, type, or message identifies context overflow), `INVALID_REQUEST` (other 400s), `SERVER` (5xx), `HTTP_<status>` otherwise. A transport failure before any response (DNS, refused connection, TLS, proxy) throws `NETWORK` naming the configured endpoint and chaining fetch's `TypeError: fetch failed` as `cause`, so `errorChain` renders the underlying diagnosis; an abort keeps its `DOMException` so the loop classifies it as cancellation. Protocol violations throw `STREAM_CLOSED` (no `[DONE]`) or `MALFORMED_RESPONSE` (bad JSON payload). Unknown wire `finish_reason`s (e.g. `content_filter`, `insufficient_system_resource`) become `finish {kind: 'error', code: <REASON>}` chunks.
Non-2xx responses throw `LlmError` with stable codes: `AUTH` (401/403), `QUOTA` (a response whose provider details identify exhausted quota, balance, or credits), `RATE_LIMIT` (other 429s), `CONTEXT_WINDOW_EXCEEDED` (a 400 whose provider code, type, or message identifies context overflow), `INVALID_REQUEST` (other 400s), `SERVER` (5xx), `HTTP_<status>` otherwise. Its serializable `failure` retains the HTTP status plus a valid positive `Retry-After` seconds/date delay and `x-request-id` / `x-deepseek-request-id` when present. A pre-response transport failure (DNS, refused connection, TLS, proxy) throws `TRANSPORT` naming the configured endpoint and chaining the original rejection as `cause`; caller aborts throw `ABORTED`, and the loop's cancellation signal remains authoritative. Protocol violations throw `STREAM_CLOSED` (no `[DONE]`) or `MALFORMED_RESPONSE` (bad JSON payload). Unknown wire `finish_reason`s (e.g. `content_filter`, `insufficient_system_resource`) become `finish {kind: 'error', failure}` chunks.
## Testing
Unit suites run against a local `node:http` mock SSE server (no network). Real-API coverage lives in `tests/adapter.e2e.ts` (`pnpm run test:e2e`, key-gated): V4 Flash + V4 Pro across thinking enabled/disabled and both official effort levels, including the thinking+tools round trip with reasoning passback.
Unit suites run against a local `node:http` mock SSE server (no network), including structured HTTP facts, malformed/truncated streams, caller abort, connection failure, and proof that idle timeout aborts the actual body. Real-API coverage lives in `tests/adapter.e2e.ts` (`pnpm run test:e2e`, key-gated): V4 Flash + V4 Pro across thinking enabled/disabled and both official effort levels, including the thinking+tools round trip with reasoning passback.
## Model Experience

View File

@@ -23,6 +23,7 @@
"license": "BSD-3-Clause",
"peerDependencies": {
"@deepseek-ai/dsh-llm": "^0.0.1",
"@deepseek-ai/dsh-timeout": "^0.0.1",
"cordis": "^4.0.0-rc.7"
},
"dependencies": {
@@ -30,6 +31,7 @@
},
"devDependencies": {
"@deepseek-ai/dsh-llm": "workspace:^",
"@deepseek-ai/dsh-timeout": "workspace:^",
"cordis": "^4.0.0-rc.7"
}
}

View File

@@ -5,8 +5,9 @@
* @module dsh-llm-deepseek/adapter
*/
import { attributionHeaders, CONTEXT_WINDOW_EXCEEDED_CODE, isContextWindowExceededError, LlmAdapter, LlmError } from '@deepseek-ai/dsh-llm'
import { attributionHeaders, CONTEXT_WINDOW_EXCEEDED_CODE, isContextWindowExceededError, isQuotaExceededError, LlmAdapter, LlmError, ProviderRequestId, QUOTA_EXCEEDED_CODE } from '@deepseek-ai/dsh-llm'
import type { GenerateOptions, LlmModelInfo, LlmProviderInfo, StreamChunk } from '@deepseek-ai/dsh-llm'
import { idleWatchdog, MAX_TIMER_DELAY_MS, timeoutOf } from '@deepseek-ai/dsh-timeout'
import { serializeRequest } from './serialize.ts'
import type { RequestDefaults } from './serialize.ts'
import { parseSse } from './sse.ts'
@@ -33,6 +34,27 @@ export interface DeepSeekAdapterOptions {
defaults?: RequestDefaults
/** Advisory models exposed to discovery consumers; requests remain unrestricted. */
models?: readonly DeepSeekCatalogModel[]
/** Maximum provider idle time while one stream read is outstanding. */
streamIdleTimeoutMs?: number
}
/** Default maximum idle interval while an adapter stream read is outstanding. */
export const DEFAULT_STREAM_IDLE_TIMEOUT_MS = 300_000
const STREAM_IDLE_TIMEOUT_CODE = 'LLM_STREAM_IDLE_TIMEOUT'
function providerRetryAfterMs(value: string | null): number | undefined {
if (value === null) return undefined
if (/^\d+$/.test(value)) {
const delay = Number(value) * 1_000
return Number.isFinite(delay) && delay > 0 ? delay : undefined
}
const delay = Date.parse(value) - Date.now()
return Number.isFinite(delay) && delay > 0 ? delay : undefined
}
function requestId(headers: Headers): ReturnType<typeof ProviderRequestId> | undefined {
const value = headers.get('x-request-id') ?? headers.get('x-deepseek-request-id')
return value === null || value.length === 0 ? undefined : ProviderRequestId(value)
}
/**
@@ -43,9 +65,10 @@ export interface DeepSeekAdapterOptions {
*/
export function httpErrorCode(status: number, error?: WireError['error']): string {
if (status === 401 || status === 403) return 'AUTH'
const detail = [error?.code, error?.type, error?.message].filter(Boolean).join(' ')
if (isQuotaExceededError(detail)) return QUOTA_EXCEEDED_CODE
if (status === 429) return 'RATE_LIMIT'
if (status === 400) {
const detail = [error?.code, error?.type, error?.message].filter(Boolean).join(' ')
if (isContextWindowExceededError(detail)) return CONTEXT_WINDOW_EXCEEDED_CODE
return 'INVALID_REQUEST'
}
@@ -57,13 +80,22 @@ export function httpErrorCode(status: number, error?: WireError['error']): strin
* The first real `LlmAdapter`. One instance serves every model name it was
* registered under (the harness model name IS the wire model name).
*
* Abort: `options.signal` is handed to fetch — both the initial request and
* the body stream reject on abort, which surfaces to the loop as a rejected
* step (the loop already contains step errors).
* One stable signal reaches both initial fetch and body reads. Caller aborts
* map to `ABORTED`; the configured per-read idle watchdog maps to `TIMEOUT`.
*/
export class DeepSeekAdapter extends LlmAdapter {
private readonly streamIdleTimeoutMs: number
constructor(private readonly options: DeepSeekAdapterOptions) {
super()
this.streamIdleTimeoutMs = options.streamIdleTimeoutMs ?? DEFAULT_STREAM_IDLE_TIMEOUT_MS
if (!Number.isFinite(this.streamIdleTimeoutMs)
|| this.streamIdleTimeoutMs <= 0
|| this.streamIdleTimeoutMs > MAX_TIMER_DELAY_MS) {
throw new Error(
`llm-deepseek: streamIdleTimeoutMs must be a positive finite number no greater than ${MAX_TIMER_DELAY_MS}`,
)
}
}
override providerInfo(provider: string): LlmProviderInfo {
@@ -80,8 +112,50 @@ export class DeepSeekAdapter extends LlmAdapter {
}
async * stream(options: GenerateOptions): AsyncIterable<StreamChunk> {
const consumer = new AbortController()
const upstream = options.signal === undefined
? consumer.signal
: AbortSignal.any([options.signal, consumer.signal])
using watchdog = idleWatchdog(upstream, this.streamIdleTimeoutMs, STREAM_IDLE_TIMEOUT_CODE)
const iterator = this.request(options, watchdog.signal)[Symbol.asyncIterator]()
let exhausted = false
try {
while (true) {
const result = await watchdog.next(iterator)
if (result.done) {
exhausted = true
return
}
yield result.value
}
} catch (error: unknown) {
if (timeoutOf(watchdog.signal, STREAM_IDLE_TIMEOUT_CODE) !== undefined) {
throw new LlmError(
`DeepSeek stream idle timeout after ${this.streamIdleTimeoutMs}ms`,
'TIMEOUT',
{ cause: error },
)
}
if (options.signal?.aborted) {
throw new LlmError('DeepSeek request aborted by caller', 'ABORTED', { cause: error })
}
if (error instanceof LlmError) throw error
throw new LlmError(`DeepSeek API stream from ${this.options.baseURL} failed`, 'TRANSPORT', { cause: error })
} finally {
consumer.abort('DeepSeek stream consumer stopped')
if (!exhausted && iterator.return !== undefined) {
try {
await iterator.return()
} catch (_abortedTransportTeardown) {
// The consumer controller already owns termination; a return-time abort cannot add a second outcome.
}
}
}
}
private async * request(options: GenerateOptions, signal: AbortSignal): AsyncIterable<StreamChunk> {
const body = serializeRequest(options, this.options.defaults ?? {})
// Prepared outside the try so the NETWORK label below covers exactly the
// Prepared outside the try so the TRANSPORT label below covers exactly the
// transport boundary, never a serialization failure.
const payload = JSON.stringify(body)
const headers = {
@@ -102,19 +176,18 @@ export class DeepSeekAdapter extends LlmAdapter {
method: 'POST',
headers,
body: payload,
...options.signal ? { signal: options.signal } : {},
signal,
})
} catch (error: unknown) {
// An aborted request rethrows its original rejection (the signal's abort
// reason) so the loop classifies it as cancellation, not a provider failure.
if (options.signal?.aborted) throw error
// The outer stream distinguishes caller cancellation and watchdog expiry.
if (signal.aborted) throw error
// fetch wraps every transport failure (DNS, refused connection, TLS,
// proxy) in a bare `TypeError: fetch failed` whose actionable detail
// lives on `cause`. Wrapping with the endpoint and chaining the cause
// lets `errorChain` render the full diagnosis at every reporting seam.
throw new LlmError(
`DeepSeek API request to ${this.options.baseURL} failed`,
'NETWORK',
'TRANSPORT',
{ cause: error },
)
}
@@ -130,7 +203,13 @@ export class DeepSeekAdapter extends LlmAdapter {
// Only swallow error-body parsing: the HTTP status still identifies the
// failure, so malformed gateway JSON must not mask it.
}
throw new LlmError(message, httpErrorCode(response.status, providerError))
const delay = providerRetryAfterMs(response.headers.get('retry-after'))
const id = requestId(response.headers)
throw new LlmError(message, httpErrorCode(response.status, providerError), {
status: response.status,
...delay === undefined ? {} : { providerRetryAfterMs: delay },
...id === undefined ? {} : { requestId: id },
})
}
if (!response.body) {
throw new LlmError('DeepSeek API returned no response body', 'EMPTY_RESPONSE')

View File

@@ -8,7 +8,8 @@
import type { Context } from 'cordis'
import z from 'schemastery'
import type {} from '@deepseek-ai/dsh-llm'
import { DeepSeekAdapter } from './adapter.ts'
import { MAX_TIMER_DELAY_MS } from '@deepseek-ai/dsh-timeout'
import { DEFAULT_STREAM_IDLE_TIMEOUT_MS, DeepSeekAdapter } from './adapter.ts'
import type { DeepSeekCatalogModel } from './adapter.ts'
export { DeepSeekAdapter } from './adapter.ts'
@@ -41,6 +42,8 @@ export interface Config {
reasoningEffort?: 'high' | 'max'
/** Advisory models shown by discovery consumers; defaults to V4 Flash and V4 Pro. */
models?: DeepSeekCatalogModel[]
/** Maximum provider idle time while one stream read is outstanding (default five minutes). */
streamIdleTimeoutMs?: number
}
const catalogModel: z<DeepSeekCatalogModel> = z.object({
@@ -55,6 +58,7 @@ export const Config: z<Config> = z.object({
thinking: z.union(['enabled', 'disabled']),
reasoningEffort: z.union(['high', 'max']),
models: z.array(catalogModel).default(DEFAULT_MODELS),
streamIdleTimeoutMs: z.number().min(Number.MIN_VALUE).max(MAX_TIMER_DELAY_MS).default(DEFAULT_STREAM_IDLE_TIMEOUT_MS),
})
/** Public API default; the internal endpoint comes from $DEEPSEEK_BASE_URL. */
@@ -92,5 +96,6 @@ export function apply(ctx: Context, config: Config): void {
reasoningEffort: config.reasoningEffort,
},
models: resolveModels(config.models),
streamIdleTimeoutMs: config.streamIdleTimeoutMs ?? DEFAULT_STREAM_IDLE_TIMEOUT_MS,
}))
}

View File

@@ -35,7 +35,10 @@ export function mapFinishReason(reason: string): FinishReason {
case 'length': return { kind: 'max-tokens' }
default:
// content_filter, insufficient_system_resource, future additions.
return { kind: 'error', message: `model stopped: ${reason}`, code: reason.toUpperCase() }
return {
kind: 'error',
failure: { message: `model stopped: ${reason}`, code: reason.toUpperCase() },
}
}
}

View File

@@ -2,7 +2,15 @@ import { createServer } from 'node:http'
import type { IncomingMessage, Server, ServerResponse } from 'node:http'
import { afterEach, describe, expect, it, vi } from 'vitest'
import { Context } from 'cordis'
import LlmService, { CONTEXT_WINDOW_EXCEEDED_CODE, errorChain, LlmError, userAgent } from '@deepseek-ai/dsh-llm'
import LlmService, {
CONTEXT_WINDOW_EXCEEDED_CODE,
errorChain,
LlmError,
ProviderRequestId,
QUOTA_EXCEEDED_CODE,
userAgent,
} from '@deepseek-ai/dsh-llm'
import { MAX_TIMER_DELAY_MS } from '@deepseek-ai/dsh-timeout'
import { SessionId } from '@deepseek-ai/dsh-session'
import * as LlmDeepSeek from '@deepseek-ai/dsh-llm-deepseek'
import { DeepSeekAdapter } from '@deepseek-ai/dsh-llm-deepseek'
@@ -12,7 +20,7 @@ import { assemble } from './assemble.ts'
/** One scripted behavior for the next request the mock server receives. */
type Behavior =
| { kind: 'sse'; events: string[]; delayMs?: number }
| { kind: 'http-error'; status: number; body: string; contentType?: string }
| { kind: 'http-error'; status: number; body: string; contentType?: string; headers?: Record<string, string> }
| { kind: 'close-early'; events: string[] }
interface MockServer {
@@ -30,6 +38,7 @@ const servers: Server[] = []
afterEach(async () => {
await Promise.all(servers.splice(0).map(server => new Promise(resolve => server.close(resolve))))
vi.unstubAllEnvs()
vi.useRealTimers()
})
/** Local chat-completions stand-in: replays scripted behaviors per request. */
@@ -48,7 +57,10 @@ async function mockServer(script: Behavior[]): Promise<MockServer> {
return
}
if (behavior.kind === 'http-error') {
response.writeHead(behavior.status, { 'content-type': behavior.contentType ?? 'application/json' })
response.writeHead(behavior.status, {
'content-type': behavior.contentType ?? 'application/json',
...behavior.headers,
})
response.end(behavior.body)
return
}
@@ -202,6 +214,84 @@ describe('DeepSeekAdapter against a mock server', () => {
expect(code).toBe(CONTEXT_WINDOW_EXCEEDED_CODE)
})
it('retains status, Retry-After seconds, and provider request id as structured facts', async () => {
const server = await mockServer([{
kind: 'http-error',
status: 429,
body: JSON.stringify({ error: { message: 'slow down' } }),
headers: { 'retry-after': '2', 'x-request-id': 'req-429' },
}])
const ctx = await harness(server.url)
let thrown: unknown
try {
await assemble(ctx, { model: 'deepseek-v4-flash', messages: [] })
} catch (error: unknown) {
thrown = error
}
expect(thrown).toBeInstanceOf(LlmError)
expect((thrown as LlmError).failure).toEqual({
message: 'slow down',
code: 'RATE_LIMIT',
status: 429,
providerRetryAfterMs: 2_000,
requestId: ProviderRequestId('req-429'),
})
})
it('parses a future Retry-After HTTP date and the DeepSeek request-id fallback', async () => {
const now = 1_800_000_000_000
const dateNow = vi.spyOn(Date, 'now').mockReturnValue(now)
try {
const server = await mockServer([{
kind: 'http-error',
status: 503,
body: JSON.stringify({ error: { message: 'come back later' } }),
headers: {
'retry-after': new Date(now + 3_000).toUTCString(),
'x-deepseek-request-id': 'deepseek-503',
},
}])
const ctx = await harness(server.url)
await expect(assemble(ctx, { model: 'deepseek-v4-flash', messages: [] }))
.rejects.toMatchObject({
failure: {
message: 'come back later',
code: 'SERVER',
status: 503,
providerRetryAfterMs: 3_000,
requestId: ProviderRequestId('deepseek-503'),
},
})
} finally {
dateNow.mockRestore()
}
})
it('omits zero, non-finite, invalid, and past Retry-After values', async () => {
const values = [
'0',
'9'.repeat(400),
'not-a-date',
new Date(0).toUTCString(),
]
for (const value of values) {
const server = await mockServer([{
kind: 'http-error',
status: 429,
body: JSON.stringify({ error: { message: 'retry later' } }),
headers: { 'retry-after': value },
}])
const ctx = await harness(server.url)
let thrown: LlmError | undefined
try {
await assemble(ctx, { model: 'deepseek-v4-flash', messages: [] })
} catch (error: unknown) {
if (error instanceof LlmError) thrown = error
}
expect(thrown?.failure).toEqual({ message: 'retry later', code: 'RATE_LIMIT', status: 429 })
}
})
it('classifies only context-capacity HTTP 400 details as context overflow', () => {
expect(httpErrorCode(400, { message: 'request too large for model context' }))
.toBe(CONTEXT_WINDOW_EXCEEDED_CODE)
@@ -210,6 +300,12 @@ describe('DeepSeekAdapter against a mock server', () => {
expect(httpErrorCode(413, { code: 'context_length_exceeded' })).toBe('HTTP_413')
})
it('distinguishes terminal quota exhaustion from transient HTTP 429 throttling', () => {
expect(httpErrorCode(429, { code: 'insufficient_quota', message: 'account credits exhausted' }))
.toBe(QUOTA_EXCEEDED_CODE)
expect(httpErrorCode(429, { message: 'request rate limit exceeded' })).toBe('RATE_LIMIT')
})
it('keeps the status-line message for JSON error bodies without a message', async () => {
const server = await mockServer([{ kind: 'http-error', status: 500, body: '{"error":{"type":"x"}}' }])
const ctx = await harness(server.url)
@@ -228,7 +324,7 @@ describe('DeepSeekAdapter against a mock server', () => {
expect(httpErrorCode(418)).toBe('HTTP_418')
})
it('wraps a transport failure in NETWORK with the fetch cause chain in the message', async () => {
it('wraps a transport failure in TRANSPORT with the fetch cause chain in the message', async () => {
// Port 1 is reserved/unbound: fetch rejects with `TypeError: fetch failed`
// whose actionable detail (ECONNREFUSED) lives on `cause`.
const ctx = await harness('http://127.0.0.1:1')
@@ -240,14 +336,14 @@ describe('DeepSeekAdapter against a mock server', () => {
}
expect(caught).toBeInstanceOf(LlmError)
const llmError = caught as LlmError
expect(llmError.code).toBe('NETWORK')
expect(llmError.code).toBe('TRANSPORT')
expect(llmError.message).toContain('http://127.0.0.1:1')
expect(llmError.cause).toBeInstanceOf(TypeError)
// The chain renderer reaches the transport diagnosis through the cause.
expect(errorChain(llmError)).toMatch(/ECONNREFUSED|EADDRNOTAVAIL|bad port/)
})
it('keeps an abort rejection unwrapped so the loop classifies it as cancellation', async () => {
it('classifies an aborted request without losing the transport rejection', async () => {
const controller = new AbortController()
controller.abort()
const ctx = await harness('http://127.0.0.1:1')
@@ -257,8 +353,9 @@ describe('DeepSeekAdapter against a mock server', () => {
} catch (error: unknown) {
caught = error
}
expect(caught).not.toBeInstanceOf(LlmError)
expect((caught as Error).name).toBe('AbortError')
expect(caught).toBeInstanceOf(LlmError)
expect(caught).toMatchObject({ code: 'ABORTED' })
expect((caught as LlmError).cause).toMatchObject({ name: 'AbortError' })
})
it('throws EMPTY_RESPONSE when the response has no body', async () => {
@@ -276,14 +373,20 @@ describe('DeepSeekAdapter against a mock server', () => {
}
})
it('rejects with STREAM_CLOSED when the server drops mid-stream', async () => {
it('classifies an abrupt body close as TRANSPORT and retains its cause', async () => {
const server = await mockServer([{
kind: 'close-early',
events: ['{"choices":[{"delta":{"content":"par"}}]}'],
}])
const ctx = await harness(server.url)
await expect(assemble(ctx,{ model: 'deepseek-v4-flash', messages: [] }))
.rejects.toThrow(/terminated|socket|without \[DONE\]/)
let caught: unknown
try {
await assemble(ctx,{ model: 'deepseek-v4-flash', messages: [] })
} catch (error: unknown) {
caught = error
}
expect(caught).toMatchObject({ code: 'TRANSPORT' })
expect(errorChain(caught)).toMatch(/terminated|socket|without \[DONE\]/)
})
it('aborts mid-stream via the request signal', async () => {
@@ -305,7 +408,76 @@ describe('DeepSeekAdapter against a mock server', () => {
})()
setTimeout(() => { controller.abort() }, 30)
await expect(pending).rejects.toThrow()
await expect(pending).rejects.toMatchObject({ code: 'ABORTED' })
})
it('maps connection failures to TRANSPORT without losing the cause', async () => {
const cause = new TypeError('connection refused')
const fetchSpy = vi.spyOn(globalThis, 'fetch').mockRejectedValue(cause)
const adapter = new DeepSeekAdapter({ apiKey: 'k', baseURL: 'https://example.invalid' })
try {
const drain = async (): Promise<void> => {
for await (const _chunk of adapter.stream({ provider: 'deepseek', model: 'm', messages: [] })) { /* drain */ }
}
await expect(drain()).rejects.toMatchObject({ code: 'TRANSPORT', cause })
} finally {
fetchSpy.mockRestore()
}
})
it('renders a non-Error transport rejection without losing its cause', async () => {
const fetchSpy = vi.spyOn(globalThis, 'fetch').mockImplementation(() => {
const failed = Promise.withResolvers<Response>()
failed.reject('offline')
return failed.promise
})
const adapter = new DeepSeekAdapter({ apiKey: 'k', baseURL: 'https://example.invalid' })
try {
const drain = async (): Promise<void> => {
for await (const _chunk of adapter.stream({ provider: 'deepseek', model: 'm', messages: [] })) { /* drain */ }
}
await expect(drain()).rejects.toMatchObject({
message: 'DeepSeek API request to https://example.invalid failed',
code: 'TRANSPORT',
cause: 'offline',
})
} finally {
fetchSpy.mockRestore()
}
})
it('aborts the underlying body when the stream stays idle past its watchdog', async () => {
vi.useFakeTimers()
let stopped = false
const fetchSpy = vi.spyOn(globalThis, 'fetch').mockImplementation((_input, init) => {
const signal = init?.signal
const body = new ReadableStream<Uint8Array>({
start(controller) {
signal?.addEventListener('abort', () => {
stopped = true
controller.error(signal.reason)
}, { once: true })
},
})
return Promise.resolve(new Response(body, { status: 200 }))
})
const adapter = new DeepSeekAdapter({
apiKey: 'k',
baseURL: 'https://example.invalid',
streamIdleTimeoutMs: 100,
})
try {
const drain = (async () => {
for await (const _chunk of adapter.stream({ provider: 'deepseek', model: 'm', messages: [] })) { /* drain */ }
})()
const rejected = expect(drain).rejects.toMatchObject({ code: 'TIMEOUT' })
await vi.advanceTimersByTimeAsync(0)
await vi.advanceTimersByTimeAsync(100)
await rejected
expect(stopped).toBe(true)
} finally {
fetchSpy.mockRestore()
}
})
})
@@ -452,4 +624,30 @@ describe('plugin registration and config', () => {
expect(adapter).toBeInstanceOf(DeepSeekAdapter)
await expect(adapter.listModels('deepseek')).resolves.toEqual([])
})
it('rejects invalid idle watchdog bounds for direct and plugin composition', async () => {
expect(() => new DeepSeekAdapter({
apiKey: 'k',
baseURL: 'http://127.0.0.1:1',
streamIdleTimeoutMs: Number.POSITIVE_INFINITY,
})).toThrow(/streamIdleTimeoutMs.*positive finite/)
expect(() => new DeepSeekAdapter({
apiKey: 'k',
baseURL: 'http://127.0.0.1:1',
streamIdleTimeoutMs: MAX_TIMER_DELAY_MS + 1,
})).toThrow(/streamIdleTimeoutMs.*no greater/)
const ctx = new Context()
await ctx.plugin(LlmService)
await expect(ctx.plugin(LlmDeepSeek, {
apiKey: 'k',
baseURL: 'http://127.0.0.1:1',
streamIdleTimeoutMs: 0,
})).rejects.toThrow(/streamIdleTimeoutMs/)
await expect(ctx.plugin(LlmDeepSeek, {
apiKey: 'k',
baseURL: 'http://127.0.0.1:1',
streamIdleTimeoutMs: MAX_TIMER_DELAY_MS + 1,
})).rejects.toThrow(/streamIdleTimeoutMs/)
})
})

View File

@@ -232,8 +232,7 @@ describe('mapFinishReason', () => {
(wire) => {
expect(mapFinishReason(wire)).toEqual({
kind: 'error',
message: `model stopped: ${wire}`,
code: wire.toUpperCase(),
failure: { message: `model stopped: ${wire}`, code: wire.toUpperCase() },
})
},
)

View File

@@ -19,6 +19,9 @@
},
{
"path": "../../llm/llm"
},
{
"path": "../../util/timeout"
}
]
}

View File

@@ -19,7 +19,7 @@ Configure credentials and deployment-specific transport settings per provider. O
reasoning: high
- provider: anthropic
apiKey: !!js process.env.ANTHROPIC_API_KEY
maxRetries: 2
streamIdleTimeoutMs: 300000
- provider: openrouter
apiKey: !!js process.env.OPENROUTER_API_KEY
headers:
@@ -30,7 +30,9 @@ Each provider name must exist in pi-ai's installed catalog and may appear only o
The adapter exposes each configured provider's installed pi-ai models through `ctx.llm.listModels(provider)`. This is provider-neutral selector metadata derived from `getModels(provider)`; request-time resolution still performs the authoritative catalog lookup, so discovery does not create a second model registry.
Supported profile fields are `provider`, `apiKey`, `baseURL`, `headers`, `reasoning`, `thinkingBudgets`, `cacheRetention`, `transport`, `timeoutMs`, `websocketConnectTimeoutMs`, `maxRetries`, and `maxRetryDelayMs`. They map to pi-ai's common stream options. Harness app attribution wins a conflicting configured header name.
Supported profile fields are `provider`, `apiKey`, `baseURL`, `headers`, `reasoning`, `thinkingBudgets`, `cacheRetention`, `transport`, `timeoutMs`, `websocketConnectTimeoutMs`, and `streamIdleTimeoutMs`. The stream-idle interval is a positive finite Node timer delay, defaults to five minutes, and covers only an outstanding provider read, not consumer think time. Harness app attribution wins a conflicting configured header name.
The adapter forces pi-ai's SDK `maxRetries` to zero so one `stream()` call makes one provider request. The removed profile fields `maxRetries` and `maxRetryDelayMs` fail load instead of silently multiplying or hiding the separately composed agent-level retry budget. Idle expiry aborts the SDK's stable request signal and surfaces `TIMEOUT`; an earlier caller abort remains `ABORTED`.
## Provider/model routing and replay
@@ -43,7 +45,7 @@ If a listener rewrites assembled assistant content, the loop drops replay state
## Vocabulary differences
- pi-ai tool-call arguments are parsed objects; the harness stores raw JSON strings. The adapter parses input and re-stringifies output.
- pi-ai reports failures as in-stream error events; these map to `finish {kind:'error'|'aborted'}` chunks. Provider-specific error text and usage signals evaluated against the resolved model's context window normalize overflow to `CONTEXT_WINDOW_EXCEEDED`.
- pi-ai reports failures as in-stream error events; these map to `finish {kind:'error'|'aborted', failure}` chunks. Provider-specific error text distinguishes terminal `QUOTA` from transient `RATE_LIMIT`, while text and usage signals evaluated against the resolved model's context window normalize overflow to `CONTEXT_WINDOW_EXCEEDED`.
- pi-ai folds reasoning tokens into output usage; there is no separate reasoning count to map.
- `GenerateOptions.stop` is rejected with `UNSUPPORTED_OPTION` because pi-ai's common streaming surface cannot guarantee it across providers.
@@ -57,7 +59,7 @@ pi-ai installs several provider SDKs and lazy-loads the one selected by the cata
## Testing
Unit tests use pi-ai catalog models redirected to local mock servers and cover provider/profile routing, native API selection, endpoint overrides, attribution, conversion, replay-state validation, and cross-provider/model replay within one adapter instance. Real-API coverage remains key-gated under `pnpm run test:e2e`.
Unit tests use pi-ai catalog models redirected to local mock servers and cover provider/profile routing, one wire request per adapter call, idle-timeout response termination, caller abort, native API selection, endpoint overrides, attribution, conversion, replay-state validation, and cross-provider/model replay within one adapter instance. Real-API coverage remains key-gated under `pnpm run test:e2e`.
## Model Experience
@@ -95,3 +97,4 @@ Recorded response content appends to the next request and does not invalidate it
- **`GenerateOptions.stop` is unsupported** — pi-ai's common stream options cannot guarantee stop-sequence behavior across providers, so the adapter rejects the field.
- **In-history `system` messages use pi-ai's common context conversion** — provider-specific placement follows pi-ai rather than a harness-owned wire override.
- **Provider HTTP status is unavailable** — pi-ai error events do not expose a stable HTTP status across providers; failures expose only stable harness error codes.
- **Retry policy is not an adapter option** — SDK retries are disabled so durable agent steps and `llm/retry` events own every visible attempt; direct `ctx.llm.stream()` calls remain single-attempt.

View File

@@ -23,6 +23,7 @@
"license": "BSD-3-Clause",
"peerDependencies": {
"@deepseek-ai/dsh-llm": "^0.0.1",
"@deepseek-ai/dsh-timeout": "^0.0.1",
"cordis": "^4.0.0-rc.7"
},
"dependencies": {
@@ -32,6 +33,7 @@
"devDependencies": {
"@deepseek-ai/dsh-llm": "workspace:^",
"@deepseek-ai/dsh-llm-deepseek": "workspace:^",
"@deepseek-ai/dsh-timeout": "workspace:^",
"cordis": "^4.0.0-rc.7"
}
}

View File

@@ -16,7 +16,9 @@ import type {
} from '@earendil-works/pi-ai'
import { attributionHeaders, LlmAdapter, LlmError } from '@deepseek-ai/dsh-llm'
import type { GenerateOptions, LlmModelInfo, StreamChunk } from '@deepseek-ai/dsh-llm'
import type { PiAiProviderProfile } from './config.ts'
import { idleWatchdog, timeoutOf } from '@deepseek-ai/dsh-timeout'
import { resolveProfiles } from './config.ts'
import type { PiAiProviderProfile, ResolvedPiAiProviderProfile } from './config.ts'
import { toPiContext } from './context.ts'
import { toStreamChunks } from './stream.ts'
@@ -48,8 +50,8 @@ function profileOptions(profile: PiAiProviderProfile): SimpleStreamOptions {
...profile.transport === undefined ? {} : { transport: profile.transport },
...profile.timeoutMs === undefined ? {} : { timeoutMs: profile.timeoutMs },
...profile.websocketConnectTimeoutMs === undefined ? {} : { websocketConnectTimeoutMs: profile.websocketConnectTimeoutMs },
...profile.maxRetries === undefined ? {} : { maxRetries: profile.maxRetries },
...profile.maxRetryDelayMs === undefined ? {} : { maxRetryDelayMs: profile.maxRetryDelayMs },
// The agent recovery layer owns visible attempts; one adapter call is one SDK attempt.
maxRetries: 0,
}
}
@@ -68,11 +70,11 @@ function requestHeaders(headers: Readonly<Record<string, string>> | undefined):
* request, so models need not be registered during the Cordis lifecycle.
*/
export class PiAiAdapter extends LlmAdapter {
private readonly profiles: ReadonlyMap<string, PiAiProviderProfile>
private readonly profiles: ReadonlyMap<string, ResolvedPiAiProviderProfile>
constructor(options: PiAiAdapterOptions) {
super()
this.profiles = new Map(options.profiles.map(profile => [profile.provider, profile]))
this.profiles = new Map(resolveProfiles(options.profiles).map(profile => [profile.provider, profile]))
}
override listModels(provider: string): Promise<readonly LlmModelInfo[]> {
@@ -97,12 +99,12 @@ export class PiAiAdapter extends LlmAdapter {
}
const model = resolveModel(profile, options.model)
// Pi-ai has no iterator-return cancellation hook. Chain an internal signal
// and abort it when this generator exits so early consumers stop the HTTP stream.
const controller = new AbortController()
const onCallerAbort = (): void => { controller.abort(options.signal?.reason) }
if (options.signal?.aborted) controller.abort(options.signal.reason)
else options.signal?.addEventListener('abort', onCallerAbort, { once: true })
const consumer = new AbortController()
const upstream = options.signal === undefined
? consumer.signal
: AbortSignal.any([options.signal, consumer.signal])
const streamIdleTimeoutMs = profile.streamIdleTimeoutMs
using watchdog = idleWatchdog(upstream, streamIdleTimeoutMs, 'LLM_STREAM_IDLE_TIMEOUT')
try {
const events = streamSimple(model, toPiContext(options), {
@@ -110,15 +112,44 @@ export class PiAiAdapter extends LlmAdapter {
...options.temperature === undefined ? {} : { temperature: options.temperature },
...options.maxTokens === undefined ? {} : { maxTokens: options.maxTokens },
...options.sessionId === undefined ? {} : { sessionId: String(options.sessionId) },
signal: controller.signal,
signal: watchdog.signal,
// Profile headers are deployment-owned; attribution names are
// Harness-owned and therefore win collisions.
headers: requestHeaders(profile.headers),
})
yield* toStreamChunks(events, model.contextWindow)
const iterator = toStreamChunks(events, model.contextWindow)[Symbol.asyncIterator]()
let exhausted = false
try {
while (true) {
const result = await watchdog.next(iterator)
const timeout = timeoutOf(watchdog.signal, 'LLM_STREAM_IDLE_TIMEOUT')
if (timeout !== undefined) throw timeout
if (result.done) {
exhausted = true
return
}
yield result.value
}
} finally {
if (!exhausted) {
consumer.abort('pi-ai stream consumer stopped')
try {
await iterator.return(undefined)
} catch (_abortedSdkTeardown) {
// The stable signal already owns SDK termination; return-time abort cannot add an outcome.
}
}
}
} catch (error: unknown) {
if (timeoutOf(watchdog.signal, 'LLM_STREAM_IDLE_TIMEOUT') !== undefined) {
throw new LlmError(`pi-ai stream idle timeout after ${streamIdleTimeoutMs}ms`, 'TIMEOUT', { cause: error })
}
if (options.signal?.aborted) {
throw new LlmError('pi-ai request aborted by caller', 'ABORTED', { cause: error })
}
throw error
} finally {
options.signal?.removeEventListener('abort', onCallerAbort)
controller.abort('consumer stopped streaming')
consumer.abort('pi-ai stream consumer stopped')
}
}
}

View File

@@ -7,6 +7,10 @@
import { getProviders } from '@earendil-works/pi-ai'
import type { CacheRetention, ThinkingBudgets, ThinkingLevel, Transport } from '@earendil-works/pi-ai'
import z from 'schemastery'
import { MAX_TIMER_DELAY_MS } from '@deepseek-ai/dsh-timeout'
/** Default maximum idle interval while an adapter stream read is outstanding. */
export const DEFAULT_STREAM_IDLE_TIMEOUT_MS = 300_000
/** Configuration for one pi-ai provider route. */
export interface PiAiProviderProfile {
@@ -30,10 +34,14 @@ export interface PiAiProviderProfile {
timeoutMs?: number
/** WebSocket connection timeout in milliseconds. */
websocketConnectTimeoutMs?: number
/** Provider SDK retry count. */
maxRetries?: number
/** Maximum provider-requested retry delay in milliseconds. */
maxRetryDelayMs?: number
/** Maximum provider idle time while one stream read is outstanding. */
streamIdleTimeoutMs?: number
}
/** Validated profile with every adapter-owned default resolved. */
export interface ResolvedPiAiProviderProfile extends PiAiProviderProfile {
/** Positive finite provider-idle interval after defaulting. */
streamIdleTimeoutMs: number
}
/** Plugin configuration: the non-empty provider profiles this instance owns. */
@@ -60,8 +68,7 @@ const profile = z.object({
transport: z.union(['sse', 'websocket', 'websocket-cached', 'auto']),
timeoutMs: z.natural(),
websocketConnectTimeoutMs: z.natural(),
maxRetries: z.natural(),
maxRetryDelayMs: z.natural(),
streamIdleTimeoutMs: z.number().min(Number.MIN_VALUE).max(MAX_TIMER_DELAY_MS).default(DEFAULT_STREAM_IDLE_TIMEOUT_MS),
})
/** Runtime schema for {@link Config}. */
@@ -75,11 +82,18 @@ export const Config: z<Config> = z.object({
* @param profiles - configured provider profiles.
* @returns validated profiles in configuration order.
*/
export function resolveProfiles(profiles: readonly PiAiProviderProfile[]): PiAiProviderProfile[] {
export function resolveProfiles(profiles: readonly PiAiProviderProfile[]): ResolvedPiAiProviderProfile[] {
if (profiles.length === 0) throw new Error('llm-pi-ai: providers must contain at least one profile')
const supported = new Set<string>(getProviders())
const seen = new Set<string>()
return profiles.map((source) => {
const legacy = source as PiAiProviderProfile & {
maxRetries?: unknown
maxRetryDelayMs?: unknown
}
if ('maxRetries' in legacy || 'maxRetryDelayMs' in legacy) {
throw new Error('llm-pi-ai: maxRetries and maxRetryDelayMs were removed; compose agent recovery with dsh-llm-retry')
}
if (source.provider.length === 0) throw new Error('llm-pi-ai: provider names must be non-empty')
if (!supported.has(source.provider)) throw new Error(`llm-pi-ai: unknown pi-ai provider "${source.provider}"`)
if (seen.has(source.provider)) throw new Error(`llm-pi-ai: duplicate provider profile "${source.provider}"`)
@@ -89,9 +103,18 @@ export function resolveProfiles(profiles: readonly PiAiProviderProfile[]): PiAiP
if (source.baseURL !== undefined && source.baseURL.length === 0) {
throw new Error(`llm-pi-ai: provider "${source.provider}" has an empty baseURL`)
}
const streamIdleTimeoutMs = source.streamIdleTimeoutMs ?? DEFAULT_STREAM_IDLE_TIMEOUT_MS
if (!Number.isFinite(streamIdleTimeoutMs)
|| streamIdleTimeoutMs <= 0
|| streamIdleTimeoutMs > MAX_TIMER_DELAY_MS) {
throw new Error(
`llm-pi-ai: provider "${source.provider}" streamIdleTimeoutMs must be a positive finite number no greater than ${MAX_TIMER_DELAY_MS}`,
)
}
seen.add(source.provider)
return {
...source,
streamIdleTimeoutMs,
...source.headers === undefined ? {} : { headers: { ...source.headers } },
...source.thinkingBudgets === undefined ? {} : { thinkingBudgets: { ...source.thinkingBudgets } },
}

View File

@@ -8,7 +8,7 @@
* @module dsh-llm-pi-ai/stream
*/
import { CallId, CONTEXT_WINDOW_EXCEEDED_CODE, isContextWindowExceededError, LlmError } from '@deepseek-ai/dsh-llm'
import { CallId, CONTEXT_WINDOW_EXCEEDED_CODE, isContextWindowExceededError, isQuotaExceededError, LlmError, QUOTA_EXCEEDED_CODE } from '@deepseek-ai/dsh-llm'
import type { FinishReason, StreamChunk, TokenUsage } from '@deepseek-ai/dsh-llm'
import { isContextOverflow } from '@earendil-works/pi-ai'
import type { AssistantMessage, AssistantMessageEvent, Usage as PiUsage } from '@earendil-works/pi-ai'
@@ -30,9 +30,15 @@ export function mapUsage(usage: PiUsage): TokenUsage {
function classifyPiAiError(message: string): string {
if (/\b(?:401|403)\b/.test(message)) return 'AUTH'
if (isQuotaExceededError(message)) return QUOTA_EXCEEDED_CODE
if (/\b429\b|rate.?limit/i.test(message)) return 'RATE_LIMIT'
if (/\b400\b|invalid.?request/i.test(message)) return 'INVALID_REQUEST'
if (/\b5\d\d\b/.test(message)) return 'SERVER'
if (/\btime(?:d)?\s*out\b|timeout/i.test(message)) return 'TIMEOUT'
if (/\b(?:network|connection|socket|fetch)\b|\bECONN[A-Z]+\b/i.test(message)
|| /\b(?:other side closed|HTTP2 request did not get a response|WebSocket closed unexpectedly)\b/i.test(message)) {
return 'TRANSPORT'
}
return 'PI_AI_ERROR'
}
@@ -52,8 +58,10 @@ export function mapStopReason(message: AssistantMessage, contextWindow?: number)
if (piAiOverflow || harnessOverflow) {
return {
kind: 'error',
message: message.errorMessage ?? `pi-ai detected context overflow for model "${message.model}"`,
code: CONTEXT_WINDOW_EXCEEDED_CODE,
failure: {
message: message.errorMessage ?? `pi-ai detected context overflow for model "${message.model}"`,
code: CONTEXT_WINDOW_EXCEEDED_CODE,
},
}
}
@@ -61,10 +69,13 @@ export function mapStopReason(message: AssistantMessage, contextWindow?: number)
case 'stop': return { kind: 'stop' }
case 'length': return { kind: 'max-tokens' }
case 'toolUse': return { kind: 'tool-calls' }
case 'aborted': return { kind: 'aborted' }
case 'aborted': return {
kind: 'aborted',
failure: { message: message.errorMessage ?? 'pi-ai stream aborted', code: 'ABORTED' },
}
case 'error': {
const text = message.errorMessage ?? 'pi-ai stream error'
return { kind: 'error', message: text, code: classifyPiAiError(text) }
return { kind: 'error', failure: { message: text, code: classifyPiAiError(text) } }
}
}
}

View File

@@ -6,6 +6,7 @@ import LlmService, { CONTEXT_WINDOW_EXCEEDED_CODE, LlmError, userAgent } from '@
import * as LlmPiAi from '@deepseek-ai/dsh-llm-pi-ai'
import { PiAiAdapter } from '@deepseek-ai/dsh-llm-pi-ai'
import { getModels } from '@earendil-works/pi-ai'
import { MAX_TIMER_DELAY_MS } from '@deepseek-ai/dsh-timeout'
import { resolveProfiles } from '../src/config.ts'
import { assemble } from './assemble.ts'
@@ -14,6 +15,8 @@ interface MockServer {
paths: string[]
requests: unknown[]
headers: IncomingMessage['headers'][]
readonly closedResponses: number
responseClosed: Promise<void>
}
const servers: Server[] = []
@@ -23,11 +26,23 @@ afterEach(async () => {
await Promise.all(servers.splice(0).map(server => new Promise(resolve => server.close(resolve))))
})
async function mockServer(script: { status?: number; events?: string[]; body?: string; delayMs?: number }[]): Promise<MockServer> {
async function mockServer(script: {
status?: number
events?: string[]
body?: string
delayMs?: number
headers?: Record<string, string>
}[]): Promise<MockServer> {
const paths: string[] = []
const requests: unknown[] = []
const headers: IncomingMessage['headers'][] = []
let closedResponses = 0
const responseClosed = Promise.withResolvers<undefined>()
const server = createServer((request: IncomingMessage, response: ServerResponse) => {
response.on('close', () => {
closedResponses += 1
responseClosed.resolve(undefined)
})
let body = ''
request.on('data', (chunk: Buffer) => { body += chunk.toString('utf8') })
request.on('end', () => {
@@ -36,7 +51,7 @@ async function mockServer(script: { status?: number; events?: string[]; body?: s
headers.push(request.headers)
const behavior = script.shift() ?? { status: 500, body: 'script exhausted' }
if (behavior.status !== undefined && behavior.status !== 200) {
response.writeHead(behavior.status, { 'content-type': 'application/json' })
response.writeHead(behavior.status, { 'content-type': 'application/json', ...behavior.headers })
response.end(behavior.body ?? '{}')
return
}
@@ -56,7 +71,14 @@ async function mockServer(script: { status?: number; events?: string[]; body?: s
await new Promise<void>(resolve => server.listen(0, '127.0.0.1', resolve))
const address = server.address()
if (address === null || typeof address === 'string') throw new Error('no port')
return { url: `http://127.0.0.1:${address.port}`, paths, requests, headers }
return {
url: `http://127.0.0.1:${address.port}`,
paths,
requests,
headers,
responseClosed: responseClosed.promise,
get closedResponses() { return closedResponses },
}
}
const textEvents = [
@@ -107,8 +129,7 @@ describe('PiAiAdapter provider routing', () => {
transport: 'sse',
timeoutMs: 5000,
websocketConnectTimeoutMs: 3000,
maxRetries: 0,
maxRetryDelayMs: 10,
streamIdleTimeoutMs: 10_000,
thinkingBudgets: { high: 2048 },
})
await assemble(ctx, {
@@ -161,13 +182,35 @@ describe('PiAiAdapter provider routing', () => {
const ctx = new Context()
await ctx.plugin(LlmService)
await ctx.plugin(LlmPiAi, {
providers: [{ provider: 'openai', apiKey: 'test-key', baseURL: `${server.url}/v1`, maxRetries: 0 }],
providers: [{ provider: 'openai', apiKey: 'test-key', baseURL: `${server.url}/v1` }],
})
const result = await assemble(ctx, { provider: 'openai', model: 'gpt-4.1', messages: [] })
expect(result.finish.kind).toBe('error')
expect(server.paths).toEqual(['/v1/responses'])
})
it('forces one wire request for an SDK-retryable provider failure', async () => {
const server = await mockServer([
{
status: 429,
headers: { 'retry-after-ms': '1' },
body: JSON.stringify({ error: { message: 'retryable provider failure' } }),
},
{ status: 500, body: JSON.stringify({ error: { message: 'hidden SDK retry' } }) },
{ status: 500, body: JSON.stringify({ error: { message: 'second hidden SDK retry' } }) },
])
const ctx = new Context()
await ctx.plugin(LlmService)
await ctx.plugin(LlmPiAi, {
providers: [{ provider: 'openai', apiKey: 'test-key', baseURL: `${server.url}/v1` }],
})
const result = await assemble(ctx, { provider: 'openai', model: 'gpt-4.1', messages: [] })
expect(result.finish).toMatchObject({ kind: 'error' })
expect(server.paths).toEqual(['/v1/responses'])
})
it('uses OpenAI Responses against an Azure project v1 path with its API key header', async () => {
const server = await mockServer([{ status: 401, body: JSON.stringify({ error: { message: 'expected mock failure' } }) }])
const ctx = new Context()
@@ -178,7 +221,6 @@ describe('PiAiAdapter provider routing', () => {
apiKey: 'test-key',
baseURL: `${server.url}/api/projects/openai/openai/v1`,
headers: { 'api-key': 'test-key', Authorization: '' },
maxRetries: 0,
}],
})
const result = await assemble(ctx, { provider: 'openai', model: 'gpt-5.5', messages: [] })
@@ -195,9 +237,10 @@ describe('PiAiAdapter provider routing', () => {
[500, 'SERVER'],
] as const)('maps HTTP %s failures to %s', async (status, code) => {
const server = await mockServer([{ status, body: JSON.stringify({ error: { message: `provider ${status}` } }) }])
const ctx = await harness(server.url, { maxRetries: 0 })
const ctx = await harness(server.url)
const result = await assemble(ctx, { model: 'deepseek-v4-flash', messages: [] })
expect(result.finish).toMatchObject({ kind: 'error', code })
expect(result.finish).toMatchObject({ kind: 'error', failure: { code } })
expect(server.paths).toEqual(['/chat/completions'])
})
it('uses the resolved catalog context window for usage-based overflow detection', async () => {
@@ -218,10 +261,29 @@ describe('PiAiAdapter provider routing', () => {
expect(result.finish).toEqual({
kind: 'error',
message: `pi-ai detected context overflow for model "${model.id}"`,
code: CONTEXT_WINDOW_EXCEEDED_CODE,
failure: {
message: `pi-ai detected context overflow for model "${model.id}"`,
code: CONTEXT_WINDOW_EXCEEDED_CODE,
},
})
})
it('stops the SDK request when the adapter idle watchdog expires', async () => {
const server = await mockServer([{ events: textEvents, delayMs: 200 }])
const ctx = await harness(server.url, { streamIdleTimeoutMs: 20 })
await expect(assemble(ctx, { model: 'deepseek-v4-flash', messages: [] }))
.rejects.toMatchObject({ code: 'TIMEOUT' })
await Promise.race([
server.responseClosed,
new Promise<never>((_resolve, reject) => {
setTimeout(() => { reject(new Error('SDK request did not close after idle timeout')) }, 100)
}),
])
expect(server.paths).toEqual(['/chat/completions'])
expect(server.closedResponses).toBe(1)
})
})
describe('provider profile lifecycle', () => {
@@ -280,16 +342,31 @@ describe('provider profile lifecycle', () => {
expect(() => resolveProfiles([{ provider: 'openai', baseURL: '' }])).toThrow(/empty baseURL/)
})
it('rejects negative or fractional stream tunables at schema validation', () => {
it.each(['maxRetries', 'maxRetryDelayMs'] as const)(
'rejects removed profile field %s instead of silently restoring hidden SDK retries',
async (field) => {
const legacy = { provider: 'openai', [field]: 2 }
expect(() => resolveProfiles([legacy as never])).toThrow(/removed.*agent recovery/i)
const ctx = new Context()
await ctx.plugin(LlmService)
await expect(ctx.plugin(LlmPiAi, { providers: [legacy as never] }))
.rejects.toThrow(/removed.*agent recovery/i)
},
)
it('rejects invalid stream tunables at plugin load', async () => {
const invalid = [
{ timeoutMs: -1 },
{ websocketConnectTimeoutMs: -1 },
{ maxRetries: -1 },
{ maxRetries: 0.5 },
{ maxRetryDelayMs: -1 },
{ streamIdleTimeoutMs: 0 },
{ streamIdleTimeoutMs: Number.NaN },
{ streamIdleTimeoutMs: MAX_TIMER_DELAY_MS + 1 },
]
for (const entry of invalid) {
expect(() => new LlmPiAi.Config({ providers: [{ provider: 'openai', ...entry }] })).toThrow()
const ctx = new Context()
await ctx.plugin(LlmService)
await expect(ctx.plugin(LlmPiAi, { providers: [{ provider: 'openai', ...entry }] }))
.rejects.toThrow()
}
})
@@ -301,11 +378,59 @@ describe('provider profile lifecycle', () => {
})()).rejects.toMatchObject({ code: 'NO_ADAPTER' })
expect(new LlmError('x', 'X')).toBeInstanceOf(Error)
})
it('validates direct-constructor profiles at the embedding boundary', () => {
expect(() => new PiAiAdapter({
profiles: [{ provider: 'openai', streamIdleTimeoutMs: 0 }],
})).toThrow(/streamIdleTimeoutMs.*positive finite/)
expect(() => new PiAiAdapter({
profiles: [{ provider: 'openai', streamIdleTimeoutMs: MAX_TIMER_DELAY_MS + 1 }],
})).toThrow(/streamIdleTimeoutMs.*no greater/)
})
})
describe('abort wiring', () => {
it('preserves an unknown pre-dispatch adapter Error exactly', async () => {
const original = new Error('SDK context conversion exploded')
const message = Object.defineProperty({}, 'role', {
get() { throw original },
})
const adapter = new PiAiAdapter({ profiles: [{ provider: 'deepseek', apiKey: 'test-key' }] })
const drain = async (): Promise<void> => {
for await (const _chunk of adapter.stream({
provider: 'deepseek',
model: 'deepseek-v4-flash',
messages: [message as never],
})) { /* drain */ }
}
await expect(drain()).rejects.toBe(original)
})
it('lets a concurrent caller abort classify a pre-dispatch adapter failure', async () => {
const controller = new AbortController()
const original = new Error('conversion lost its caller')
const message = Object.defineProperty({}, 'role', {
get() {
controller.abort('caller cancelled during conversion')
throw original
},
})
const adapter = new PiAiAdapter({ profiles: [{ provider: 'deepseek', apiKey: 'test-key' }] })
const drain = async (): Promise<void> => {
for await (const _chunk of adapter.stream({
provider: 'deepseek',
model: 'deepseek-v4-flash',
messages: [message as never],
signal: controller.signal,
})) { /* drain */ }
}
await expect(drain()).rejects.toMatchObject({ code: 'ABORTED', cause: original })
})
it('resolves catalog endpoints without an override before honoring pre-abort', async () => {
const adapter = new PiAiAdapter({ profiles: [{ provider: 'deepseek', apiKey: 'test-key', maxRetries: 0 }] })
const adapter = new PiAiAdapter({ profiles: [{ provider: 'deepseek', apiKey: 'test-key' }] })
const controller = new AbortController()
controller.abort('already stopped')
const chunks = []

View File

@@ -485,20 +485,32 @@ describe('toStreamChunks', () => {
)))
expect(chunks).toEqual([
{ type: 'usage', usage: { inputTokens: 1, outputTokens: 0 } },
{ type: 'finish', reason: { kind: 'error', message: 'boom', code: 'PI_AI_ERROR' } },
{ type: 'finish', reason: { kind: 'error', failure: { message: 'boom', code: 'PI_AI_ERROR' } } },
])
})
it('maps aborted error events to aborted finish', async () => {
const error = assistant({ stopReason: 'aborted' })
const chunks = await collect(toStreamChunks(feed({ type: 'error', reason: 'aborted', error })))
expect(chunks.at(-1)).toEqual({ type: 'finish', reason: { kind: 'aborted' } })
expect(chunks.at(-1)).toEqual({
type: 'finish',
reason: { kind: 'aborted', failure: { message: 'pi-ai stream aborted', code: 'ABORTED' } },
})
})
it('rejects a stream that ends without done or error', async () => {
await expect(collect(toStreamChunks(feed({ type: 'start', partial: assistant() }))))
.rejects.toThrow(/without done\/error/)
})
it('preserves an unknown SDK iterator Error exactly', async () => {
const original = Object.assign(new Error('SDK transport exploded'), { code: 'ECONNRESET' })
async function* failedSdkStream(): AsyncGenerator<AssistantMessageEvent> {
throw original
}
await expect(collect(toStreamChunks(failedSdkStream()))).rejects.toBe(original)
})
})
describe('mapStopReason / mapUsage', () => {
@@ -506,46 +518,65 @@ describe('mapStopReason / mapUsage', () => {
['stop', { kind: 'stop' }],
['length', { kind: 'max-tokens' }],
['toolUse', { kind: 'tool-calls' }],
['aborted', { kind: 'aborted' }],
['aborted', { kind: 'aborted', failure: { message: 'pi-ai stream aborted', code: 'ABORTED' } }],
] as const)('maps %s', (stopReason, expected) => {
expect(mapStopReason(assistant({ stopReason }))).toEqual(expected)
})
it('defaults the error message when pi-ai omits it', () => {
expect(mapStopReason(assistant({ stopReason: 'error' })))
.toEqual({ kind: 'error', message: 'pi-ai stream error', code: 'PI_AI_ERROR' })
.toEqual({ kind: 'error', failure: { message: 'pi-ai stream error', code: 'PI_AI_ERROR' } })
})
it('maps routable HTTP-ish error messages to stable codes', () => {
expect(mapStopReason(assistant({ stopReason: 'error', errorMessage: 'HTTP 401: bad key' })))
.toMatchObject({ kind: 'error', code: 'AUTH' })
.toMatchObject({ kind: 'error', failure: { code: 'AUTH' } })
expect(mapStopReason(assistant({ stopReason: 'error', errorMessage: 'HTTP 429: rate limit' })))
.toMatchObject({ kind: 'error', code: 'RATE_LIMIT' })
.toMatchObject({ kind: 'error', failure: { code: 'RATE_LIMIT' } })
expect(mapStopReason(assistant({ stopReason: 'error', errorMessage: 'HTTP 429: insufficient_quota' })))
.toMatchObject({ kind: 'error', failure: { code: 'QUOTA' } })
expect(mapStopReason(assistant({
stopReason: 'error',
errorMessage: 'OpenAI API error (429): You exceeded your current quota, please check your plan and billing details.',
}))).toMatchObject({ kind: 'error', failure: { code: 'QUOTA' } })
expect(mapStopReason(assistant({ stopReason: 'error', errorMessage: 'HTTP 500: backend down' })))
.toMatchObject({ kind: 'error', code: 'SERVER' })
.toMatchObject({ kind: 'error', failure: { code: 'SERVER' } })
expect(mapStopReason(assistant({ stopReason: 'error', errorMessage: 'provider timed out' })))
.toMatchObject({ kind: 'error', failure: { code: 'TIMEOUT' } })
expect(mapStopReason(assistant({ stopReason: 'error', errorMessage: 'ECONNRESET socket closed' })))
.toMatchObject({ kind: 'error', failure: { code: 'TRANSPORT' } })
expect(mapStopReason(assistant({
stopReason: 'error',
errorMessage: 'HTTP 400: input exceeds the model context window limit',
}))).toMatchObject({ kind: 'error', code: CONTEXT_WINDOW_EXCEEDED_CODE })
}))).toMatchObject({ kind: 'error', failure: { code: CONTEXT_WINDOW_EXCEEDED_CODE } })
expect(mapStopReason(assistant({
stopReason: 'error',
errorMessage: 'HTTP 400: request too large for model context',
}))).toMatchObject({ kind: 'error', code: CONTEXT_WINDOW_EXCEEDED_CODE })
}))).toMatchObject({ kind: 'error', failure: { code: CONTEXT_WINDOW_EXCEEDED_CODE } })
expect(mapStopReason(assistant({
stopReason: 'error',
errorMessage: 'HTTP 400: invalid input: temperature exceeds maximum allowed value',
}))).toMatchObject({ kind: 'error', code: 'INVALID_REQUEST' })
}))).toMatchObject({ kind: 'error', failure: { code: 'INVALID_REQUEST' } })
})
it.each([
'other side closed',
'HTTP2 request did not get a response',
'WebSocket closed unexpectedly',
])('maps pi-ai transport wording %j', (errorMessage) => {
expect(mapStopReason(assistant({ stopReason: 'error', errorMessage })))
.toMatchObject({ kind: 'error', failure: { code: 'TRANSPORT' } })
})
it('uses pi-ai provider-specific overflow classification without losing rate-limit exclusions', () => {
expect(mapStopReason(assistant({
stopReason: 'error',
errorMessage: 'prompt is too long: 213462 tokens > 200000 maximum',
}))).toMatchObject({ kind: 'error', code: CONTEXT_WINDOW_EXCEEDED_CODE })
}))).toMatchObject({ kind: 'error', failure: { code: CONTEXT_WINDOW_EXCEEDED_CODE } })
expect(mapStopReason(assistant({
stopReason: 'error',
errorMessage: 'ThrottlingException: Too many tokens, rate limit reached',
}))).toMatchObject({ kind: 'error', code: 'RATE_LIMIT' })
}))).toMatchObject({ kind: 'error', failure: { code: 'RATE_LIMIT' } })
})
it('uses the resolved context window for silent and length-stop overflows', () => {
@@ -553,15 +584,17 @@ describe('mapStopReason / mapUsage', () => {
expect(mapStopReason(silent)).toEqual({ kind: 'stop' })
expect(mapStopReason(silent, 100)).toEqual({
kind: 'error',
message: 'pi-ai detected context overflow for model "deepseek-v4-flash"',
code: CONTEXT_WINDOW_EXCEEDED_CODE,
failure: {
message: 'pi-ai detected context overflow for model "deepseek-v4-flash"',
code: CONTEXT_WINDOW_EXCEEDED_CODE,
},
})
const truncated = assistant({ stopReason: 'length', usage: usage(80, 0, 19) })
expect(mapStopReason(truncated)).toEqual({ kind: 'max-tokens' })
expect(mapStopReason(truncated, 100)).toMatchObject({
kind: 'error',
code: CONTEXT_WINDOW_EXCEEDED_CODE,
failure: { code: CONTEXT_WINDOW_EXCEEDED_CODE },
})
})

View File

@@ -70,7 +70,7 @@ function textOf(result: AssembledResult): string {
function expectFinish(result: AssembledResult, expected: 'stop' | 'tool-calls'): void {
if (result.finish.kind === 'error') {
throw new Error(`provider request failed (${result.finish.code ?? 'unknown'}): ${result.finish.message}`)
throw new Error(`provider request failed (${result.finish.failure.code}): ${result.finish.failure.message}`)
}
expect(result.finish.kind).toBe(expected)
}

View File

@@ -0,0 +1,35 @@
import { afterEach, describe, expect, it, vi } from 'vitest'
const streamSimple = vi.hoisted(() => vi.fn())
vi.mock('@earendil-works/pi-ai', async (importOriginal) => {
const actual = await importOriginal<typeof import('@earendil-works/pi-ai')>()
return { ...actual, streamSimple }
})
import { PiAiAdapter } from '../src/adapter.ts'
afterEach(() => { streamSimple.mockReset() })
describe('pi-ai SDK retry boundary', () => {
it('pins one SDK attempt even when the installed provider currently defaults to zero retries', async () => {
const failure = new Error('mock SDK boundary')
streamSimple.mockReturnValue({
async * [Symbol.asyncIterator](): AsyncGenerator<never> {
throw failure
},
})
const adapter = new PiAiAdapter({ profiles: [{ provider: 'openai', apiKey: 'test-key' }] })
const drain = async (): Promise<void> => {
for await (const _chunk of adapter.stream({
provider: 'openai',
model: 'gpt-4.1',
messages: [],
})) { /* drain */ }
}
await expect(drain()).rejects.toBe(failure)
expect(streamSimple).toHaveBeenCalledOnce()
expect(streamSimple.mock.calls[0]?.[2]).toMatchObject({ maxRetries: 0 })
})
})

View File

@@ -19,6 +19,9 @@
},
{
"path": "../../llm/llm"
},
{
"path": "../../util/timeout"
}
]
}

View File

@@ -0,0 +1,39 @@
# `@deepseek-ai/dsh-llm-retry`
Function plugin that retries selected transient model-request failures on the agent loop's closed-step recovery seam. It does not wrap `ctx.llm.stream()`: every adapter call remains one provider attempt, and every retry opens a fresh numbered step.
The default policy permits two retries for `RATE_LIMIT`, `SERVER`, `TIMEOUT`, and `TRANSPORT`, using bounded exponential backoff from 500 ms to 10 seconds with 10 percent jitter. Delay bounds must fit Node's supported timer range. A valid `providerRetryAfterMs` replaces local backoff when it is within the configured cap; an over-cap instruction delegates to the next recovery policy instead.
Before waiting, the plugin appends a non-surface `llm/retry` event with the failure and scheduled delay. Cancellation and plugin disposal abort the wait; disposal drains the plugin's active backoffs, and a callback captured before disposal fails closed if invoked afterward.
```yaml
- name: '@deepseek-ai/dsh-llm-retry'
config:
maxTransientRetries: 2
initialDelayMs: 500
maxDelayMs: 10000
jitterRatio: 0.1
retryableCodes: [RATE_LIMIT, SERVER, TIMEOUT, TRANSPORT]
```
## Model Experience
### Transient request recovery
#### What the model sees
No retry event, delay, or failure prose is model-visible. After a retry, the next numbered step reconstructs the same explicit provider/model request from durable session history; failed chunks never enter derived messages.
#### Token effect
Each retry is a new provider request and may repeat input-token billing. The finite budget caps attempts; `llm/retry` itself contributes no tokens.
#### KV Cache effect
The reconstructed request preserves the prior prefix and is eligible for provider cache reuse under that provider's rules. The non-surface status event does not change cache identity.
## Known Limitations and Deferred Work
- **Agent steps are the only retry boundary** — direct `ctx.llm.stream()` consumers remain single-attempt because a raw stream cannot separate already-emitted chunks durably.
- **Finite plugin budgets add** — this policy counts only configured transient codes; context-overflow compaction counts only its own code. A future policy with overlapping codes must document and test registration-order behavior.
- **`llm/retry` records scheduling, not completion** — later step and turn events establish success, exhaustion, or cancellation.

View File

@@ -0,0 +1,47 @@
{
"name": "@deepseek-ai/dsh-llm-retry",
"description": "Bounded transient LLM request retry policy for the DeepSeek Harness",
"version": "0.0.1",
"private": true,
"type": "module",
"main": "lib/index.js",
"types": "lib/types/index.d.ts",
"exports": {
".": {
"types": "./lib/types/index.d.ts",
"default": "./lib/index.js"
},
"./package.json": "./package.json"
},
"files": [
"lib/index.js",
"lib/types/**/*.d.ts",
"lib/types/**/*.d.ts.map",
"src"
],
"license": "BSD-3-Clause",
"peerDependencies": {
"@deepseek-ai/dsh-agent": "^0.0.1",
"@deepseek-ai/dsh-llm": "^0.0.1",
"@deepseek-ai/dsh-session": "^0.0.1",
"@deepseek-ai/dsh-timeout": "^0.0.1",
"cordis": "^4.0.0-rc.7"
},
"dependencies": {
"schemastery": "^3.18.0"
},
"devDependencies": {
"@cordisjs/plugin-include": "workspace:^",
"@cordisjs/plugin-loader": "workspace:^",
"@deepseek-ai/dsh-agent": "workspace:^",
"@deepseek-ai/dsh-agent-loop": "workspace:^",
"@deepseek-ai/dsh-llm": "workspace:^",
"@deepseek-ai/dsh-session": "workspace:^",
"@deepseek-ai/dsh-session-persistence-jsonl": "workspace:^",
"@deepseek-ai/dsh-session-persistence-sqlite": "workspace:^",
"@deepseek-ai/dsh-system-prompt": "workspace:^",
"@deepseek-ai/dsh-timeout": "workspace:^",
"@deepseek-ai/dsh-tools": "workspace:^",
"cordis": "^4.0.0-rc.7"
}
}

View File

@@ -0,0 +1,213 @@
/**
* Bounded transient model-request retry policy on the agent loop's closed-step
* recovery seam. Each scheduled retry is durable before its cancellable wait.
*
* @module @deepseek-ai/dsh-llm-retry
*/
import type { Context } from 'cordis'
import z from 'schemastery'
import type { Agent, RequestError, RequestErrorDecision } from '@deepseek-ai/dsh-agent'
import type { LlmFailure } from '@deepseek-ai/dsh-llm'
import type {} from '@deepseek-ai/dsh-session'
import { MAX_TIMER_DELAY_MS } from '@deepseek-ai/dsh-timeout'
declare module '@deepseek-ai/dsh-session' {
interface SessionEventMap {
/** Durable, non-surface record of one transient retry scheduled after a closed failed step. */
'llm/retry': {
turn: number
step: number
retry: number
maxRetries: number
delayMs: number
failure: LlmFailure
}
}
}
export const name = 'llm-retry'
export const inject = ['agents']
const DEFAULT_MAX_TRANSIENT_RETRIES = 2
const DEFAULT_INITIAL_DELAY_MS = 500
const DEFAULT_MAX_DELAY_MS = 10_000
const DEFAULT_JITTER_RATIO = 0.1
const DEFAULT_RETRYABLE_CODES = Object.freeze(['RATE_LIMIT', 'SERVER', 'TIMEOUT', 'TRANSPORT'])
/** Deployment-owned limits and classification for transient request recovery. */
export interface Config {
/** Maximum transient retries after the first request (default 2). */
maxTransientRetries?: number
/** Initial local exponential-backoff delay in milliseconds (default 500). */
initialDelayMs?: number
/** Maximum accepted or locally scheduled delay in milliseconds (default 10000). */
maxDelayMs?: number
/** Symmetric random multiplier range around one (default 0.1). */
jitterRatio?: number
/** Stable failure codes eligible for this policy. */
retryableCodes?: string[]
}
/** Runtime schema for {@link Config}. */
export const Config: z<Config> = z.object({
maxTransientRetries: z.number().step(1).min(0).default(DEFAULT_MAX_TRANSIENT_RETRIES),
initialDelayMs: z.number().max(MAX_TIMER_DELAY_MS).default(DEFAULT_INITIAL_DELAY_MS),
maxDelayMs: z.number().max(MAX_TIMER_DELAY_MS).default(DEFAULT_MAX_DELAY_MS),
jitterRatio: z.number().min(0).max(1).default(DEFAULT_JITTER_RATIO),
retryableCodes: z.array(z.string()).default([...DEFAULT_RETRYABLE_CODES]),
})
interface ResolvedConfig {
readonly maxTransientRetries: number
readonly initialDelayMs: number
readonly maxDelayMs: number
readonly jitterRatio: number
readonly retryableCodes: ReadonlySet<string>
}
function resolveConfig(config: Config): ResolvedConfig {
const maxTransientRetries = config.maxTransientRetries ?? DEFAULT_MAX_TRANSIENT_RETRIES
const initialDelayMs = config.initialDelayMs ?? DEFAULT_INITIAL_DELAY_MS
const maxDelayMs = config.maxDelayMs ?? DEFAULT_MAX_DELAY_MS
const jitterRatio = config.jitterRatio ?? DEFAULT_JITTER_RATIO
const codes = config.retryableCodes ?? [...DEFAULT_RETRYABLE_CODES]
if (!Number.isInteger(maxTransientRetries) || maxTransientRetries < 0) {
throw new Error('llm-retry: maxTransientRetries must be a non-negative integer')
}
if (!Number.isFinite(initialDelayMs) || initialDelayMs <= 0 || initialDelayMs > MAX_TIMER_DELAY_MS) {
throw new Error(`llm-retry: initialDelayMs must be a positive finite number no greater than ${MAX_TIMER_DELAY_MS}`)
}
if (!Number.isFinite(maxDelayMs) || maxDelayMs <= 0 || maxDelayMs > MAX_TIMER_DELAY_MS) {
throw new Error(`llm-retry: maxDelayMs must be a positive finite number no greater than ${MAX_TIMER_DELAY_MS}`)
}
if (initialDelayMs > maxDelayMs) {
throw new Error('llm-retry: initialDelayMs must be less than or equal to maxDelayMs')
}
if (!Number.isFinite(jitterRatio) || jitterRatio < 0 || jitterRatio > 1) {
throw new Error('llm-retry: jitterRatio must be between 0 and 1')
}
if (codes.length === 0) {
throw new Error('llm-retry: retryableCodes must not be empty')
}
if (codes.some(code => code.length === 0)) {
throw new Error('llm-retry: retryableCodes must contain only non-empty strings')
}
if (new Set(codes).size !== codes.length) {
throw new Error('llm-retry: retryableCodes must not contain duplicates')
}
return Object.freeze({
maxTransientRetries,
initialDelayMs,
maxDelayMs,
jitterRatio,
retryableCodes: new Set(codes),
})
}
/** Non-serializable seams used to make timing policy deterministic in tests. */
export interface RetryInternals {
/** Random sample in the inclusive zero-to-one range used for jitter. */
random?: () => number
}
function localDelay(config: ResolvedConfig, retry: number, random: () => number): number {
const exponent = Math.min(retry - 1, 1024)
const exponential = Math.min(config.initialDelayMs * 2 ** exponent, config.maxDelayMs)
const jitter = 1 - config.jitterRatio + 2 * config.jitterRatio * random()
return Math.min(exponential * jitter, config.maxDelayMs)
}
function cancellableDelay(delayMs: number, signal: AbortSignal): Promise<boolean> {
if (signal.aborted) return Promise.resolve(false)
return new Promise((resolve) => {
const timer = setTimeout(() => {
signal.removeEventListener('abort', onAbort)
resolve(true)
}, delayMs)
function onAbort(): void {
clearTimeout(timer)
resolve(false)
}
signal.addEventListener('abort', onAbort, { once: true })
})
}
/**
* Install bounded transient request recovery.
* @param ctx - plugin context that owns the listener and active waits.
* @param config - retry budget, delay bounds, jitter, and eligible codes.
* @param internals - non-serializable deterministic seams for tests.
*/
export function apply(ctx: Context, config: Config = {}, internals: RetryInternals = {}): void {
const resolved = resolveConfig(config)
const random = internals.random ?? Math.random
const lifetime = new AbortController()
const active = new Set<Promise<RequestErrorDecision>>()
async function backoff(
agent: Agent,
turn: number,
step: number,
failure: LlmFailure,
retry: number,
delayMs: number,
signal: AbortSignal,
): Promise<RequestErrorDecision> {
const fusedSignal = AbortSignal.any([signal, lifetime.signal])
if (fusedSignal.aborted) return { action: 'fail' }
agent.session.append('llm/retry', {
turn,
step,
retry,
maxRetries: resolved.maxTransientRetries,
delayMs,
failure,
})
if (!await cancellableDelay(delayMs, fusedSignal)) return { action: 'fail' }
return { action: 'retry' }
}
const disposeListener = ctx.on('agent/request-error', (
agent: Agent,
turn: number,
step: number,
_error: RequestError,
failure: LlmFailure,
priorFailures: readonly LlmFailure[],
signal: AbortSignal,
next: () => Promise<RequestErrorDecision>,
) => {
// A waterfall may have captured this callback before its registration was
// removed. Lifetime cancellation must prevent that stale callback from
// entering a downstream policy after disposal.
if (lifetime.signal.aborted) return Promise.resolve<RequestErrorDecision>({ action: 'fail' })
if (!resolved.retryableCodes.has(failure.code)) return next()
const priorTransientFailures = priorFailures.filter(item => resolved.retryableCodes.has(item.code)).length
if (priorTransientFailures >= resolved.maxTransientRetries) return next()
const retry = priorTransientFailures + 1
let delayMs: number
if (failure.providerRetryAfterMs !== undefined
&& Number.isFinite(failure.providerRetryAfterMs)
&& failure.providerRetryAfterMs > 0) {
if (failure.providerRetryAfterMs > resolved.maxDelayMs) return next()
delayMs = failure.providerRetryAfterMs
} else {
delayMs = localDelay(resolved, retry, random)
}
const tracked = backoff(agent, turn, step, failure, retry, delayMs, signal)
.finally(() => active.delete(tracked))
active.add(tracked)
return tracked
})
ctx.effect(() => async () => {
disposeListener()
lifetime.abort(new Error('llm-retry plugin disposed'))
await Promise.allSettled([...active])
}, 'llm-retry: abort and drain backoffs')
}

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import { mkdtemp, rm, writeFile } from 'node:fs/promises'
import { tmpdir } from 'node:os'
import { join } from 'node:path'
import { pathToFileURL } from 'node:url'
import { afterEach, describe, expect, it } from 'vitest'
import { Context } from 'cordis'
import Loader from '@cordisjs/plugin-loader'
import Include from '@cordisjs/plugin-include'
import AgentRegistry from '@deepseek-ai/dsh-agent'
import type { Agent } from '@deepseek-ai/dsh-agent'
import AgentLoop from '@deepseek-ai/dsh-agent-loop'
import LlmService, { LlmAdapter, LlmError } from '@deepseek-ai/dsh-llm'
import type { GenerateOptions, StreamChunk } from '@deepseek-ai/dsh-llm'
import SessionStore, { SessionId } from '@deepseek-ai/dsh-session'
import SystemPrompt from '@deepseek-ai/dsh-system-prompt'
import ToolRegistry from '@deepseek-ai/dsh-tools'
import * as retry from '../src/index.ts'
let root: string | undefined
let context: Context | undefined
class TransientOnceAdapter extends LlmAdapter {
requests = 0
async * stream(_options: GenerateOptions): AsyncIterable<StreamChunk> {
this.requests += 1
if (this.requests === 1) throw new LlmError('temporary outage', 'SERVER')
yield { type: 'block-start', index: 0, blockType: 'text' }
yield { type: 'text-delta', index: 0, text: 'recovered' }
yield { type: 'block-end', index: 0, block: { type: 'text', text: 'recovered' } }
yield { type: 'finish', reason: { kind: 'stop' } }
}
}
function waitForIdle(ctx: Context, agent: Agent): Promise<void> {
return new Promise((resolve) => {
const dispose = ctx.on('agent/status', (subject, status) => {
if (subject === agent && status === 'idle') {
dispose()
resolve()
}
})
})
}
afterEach(async () => {
await context?.fiber.dispose()
context = undefined
if (root !== undefined) await rm(root, { recursive: true, force: true })
root = undefined
})
async function loadYaml(lines: readonly string[]): Promise<Context> {
root = await mkdtemp(join(tmpdir(), 'dsh-llm-retry-loader-'))
const configPath = join(root, 'cordis.yml')
await writeFile(configPath, [...lines, ''].join('\n'))
context = new Context()
context.baseUrl = pathToFileURL(root).href + '/'
await context.plugin(Loader)
context.loader.builtins.include = Include
const modules = new Map<string, unknown>([
['@deepseek-ai/dsh-llm', LlmService],
['@deepseek-ai/dsh-session', SessionStore],
['@deepseek-ai/dsh-system-prompt', SystemPrompt],
['@deepseek-ai/dsh-tools', ToolRegistry],
['@deepseek-ai/dsh-agent', AgentRegistry],
['@deepseek-ai/dsh-llm-retry', retry],
['@deepseek-ai/dsh-agent-loop', AgentLoop],
])
context.loader.internal = {
version: 'v2',
async import(specifier: string) {
if (!modules.has(specifier)) throw new Error(`unexpected Loader import: ${specifier}`)
return modules.get(specifier)
},
} as unknown as NonNullable<typeof context.loader.internal>
await context.loader.create({
name: 'cordis:include',
config: { path: pathToFileURL(configPath).href },
})
await context.loader.await()
return context
}
describe('real Loader composition', () => {
it('loads the flat policy and records recovery through the shipping loop', async () => {
const loaded = await loadYaml([
"- name: '@deepseek-ai/dsh-llm'",
"- name: '@deepseek-ai/dsh-session'",
"- name: '@deepseek-ai/dsh-system-prompt'",
"- name: '@deepseek-ai/dsh-tools'",
"- name: '@deepseek-ai/dsh-agent'",
"- name: '@deepseek-ai/dsh-llm-retry'",
' config:',
' maxTransientRetries: 1',
' initialDelayMs: 1',
' maxDelayMs: 1',
' jitterRatio: 0',
' retryableCodes: [RATE_LIMIT, SERVER]',
"- name: '@deepseek-ai/dsh-agent-loop'",
])
const unloaded = [...loaded.loader.entries()]
.filter(entry => entry.fiber === undefined && !entry.disabled)
.map(entry => entry.options.name)
expect(unloaded).toEqual([])
expect(loaded.agents).toBeInstanceOf(AgentRegistry)
const adapter = new TransientOnceAdapter()
loaded.llm.registerAdapter(['mock'], adapter)
const agent = loaded.agentLoop.create(SessionId('loader-retry'), { provider: 'mock', model: 'mock' })
const idle = waitForIdle(loaded, agent)
agent.send([{ type: 'text', text: 'recover' }])
await idle
expect(adapter.requests).toBe(2)
expect(agent.session.events.filter(event => event.type === 'llm/retry')).toHaveLength(1)
expect(agent.session.deriveMessages().at(-1)).toMatchObject({
role: 'assistant',
content: [{ type: 'text', text: 'recovered' }],
})
})
})

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import { mkdtemp, rm } from 'node:fs/promises'
import { tmpdir } from 'node:os'
import { join } from 'node:path'
import { afterEach, describe, expect, it } from 'vitest'
import { Context } from 'cordis'
import SessionStore, { SessionId } from '@deepseek-ai/dsh-session'
import SessionPersistenceJsonl from '@deepseek-ai/dsh-session-persistence-jsonl'
import SessionPersistenceSqlite from '@deepseek-ai/dsh-session-persistence-sqlite'
import type {} from '../src/index.ts'
const dirs: string[] = []
afterEach(async () => {
for (const dir of dirs.splice(0)) await rm(dir, { recursive: true, force: true })
})
async function backend(kind: 'jsonl' | 'sqlite'): Promise<Context> {
const ctx = new Context()
await ctx.plugin(SessionStore)
if (kind === 'jsonl') {
const root = await mkdtemp(join(tmpdir(), 'dsh-llm-retry-jsonl-'))
dirs.push(root)
await ctx.plugin(SessionPersistenceJsonl, { root })
} else {
await ctx.plugin(SessionPersistenceSqlite, { path: ':memory:' })
}
return ctx
}
describe.each(['jsonl', 'sqlite'] as const)('%s retry-event persistence', (kind) => {
it('round-trips the event losslessly without adding a model message', async () => {
const ctx = await backend(kind)
try {
const session = ctx.sessions.create(SessionId(`retry-${kind}`))
session.append('turn/start', { turn: 1, trigger: { kind: 'message', source: { kind: 'user' } } })
session.append('step/start', { turn: 1, step: 1 })
session.append('step/end', { turn: 1, step: 1 })
const event = session.append('llm/retry', {
turn: 1,
step: 1,
retry: 1,
maxRetries: 2,
delayMs: 750,
failure: { message: 'provider busy', code: 'RATE_LIMIT', status: 429 },
})
session.append('turn/end', { turn: 1, reason: { kind: 'aborted', reason: 'cancelled in backoff' } })
expect(session.deriveMessages()).toEqual([])
await ctx.sessions.flush(session)
const loaded = await ctx.sessionPersistence.load(session.id)
expect(loaded.events.find(item => item.type === 'llm/retry')).toEqual(event)
} finally {
await ctx.fiber.dispose()
}
})
})

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import { afterEach, describe, expect, it, vi } from 'vitest'
import { Context } from 'cordis'
import type { Fiber } from 'cordis'
import LlmService, { CallId, LlmAdapter, LlmError } from '@deepseek-ai/dsh-llm'
import type { GenerateOptions, StreamChunk } from '@deepseek-ai/dsh-llm'
import SessionStore, { SessionId } from '@deepseek-ai/dsh-session'
import type { SessionEvent } from '@deepseek-ai/dsh-session'
import SystemPrompt from '@deepseek-ai/dsh-system-prompt'
import ToolRegistry, { defineTool } from '@deepseek-ai/dsh-tools'
import AgentRegistry from '@deepseek-ai/dsh-agent'
import type { Agent, RequestErrorDecision } from '@deepseek-ai/dsh-agent'
import AgentLoop from '@deepseek-ai/dsh-agent-loop'
import { MAX_TIMER_DELAY_MS } from '@deepseek-ai/dsh-timeout'
import * as retry from '../src/index.ts'
type ScriptEntry = Error | Iterable<StreamChunk> | AsyncIterable<StreamChunk>
class ScriptedAdapter extends LlmAdapter {
readonly requests: GenerateOptions[] = []
constructor(private readonly entries: ScriptEntry[]) {
super()
}
async * stream(options: GenerateOptions): AsyncIterable<StreamChunk> {
this.requests.push(options)
const entry = this.entries.shift()
if (entry === undefined) throw new Error('retry test script exhausted')
if (entry instanceof Error) throw entry
yield* entry
}
}
async function* partialToolFailure(error: Error): AsyncGenerator<StreamChunk> {
const id = CallId('discarded-call')
yield { type: 'block-start', index: 0, blockType: 'text' }
yield { type: 'text-delta', index: 0, text: 'discarded partial output' }
yield { type: 'block-end', index: 0, block: { type: 'text', text: 'discarded partial output' } }
yield { type: 'block-start', index: 1, blockType: 'tool-call' }
yield { type: 'tool-call-delta', index: 1, id, name: 'danger', argumentsDelta: '{}' }
yield { type: 'block-end', index: 1, block: { type: 'tool-call', id, name: 'danger', arguments: '{}' } }
throw error
}
function textResponse(text: string): StreamChunk[] {
return [
{ type: 'block-start', index: 0, blockType: 'text' },
{ type: 'text-delta', index: 0, text },
{ type: 'block-end', index: 0, block: { type: 'text', text } },
{ type: 'finish', reason: { kind: 'stop' } },
]
}
async function harness(
adapter: LlmAdapter,
config: retry.Config = {},
beforeRetry?: (ctx: Context) => void,
internals: retry.RetryInternals = {},
): Promise<{ ctx: Context; retryFiber: Fiber }> {
const ctx = new Context()
await ctx.plugin(LlmService)
await ctx.plugin(SessionStore)
await ctx.plugin(SystemPrompt)
await ctx.plugin(ToolRegistry)
await ctx.plugin(AgentRegistry)
beforeRetry?.(ctx)
const resolvedConfig = Object.assign({
maxTransientRetries: 2,
initialDelayMs: 500,
maxDelayMs: 10_000,
jitterRatio: 0,
}, config)
const retryFiber = await ctx.plugin(Object.assign((inner: Context) => {
retry.apply(inner, resolvedConfig, internals)
}, { inject: retry.inject }))
await ctx.plugin(AgentLoop, { agents: [] })
ctx.llm.registerAdapter(['mock'], adapter)
return { ctx, retryFiber }
}
function waitForIdle(ctx: Context, agent: Agent): Promise<void> {
return new Promise((resolve) => {
const dispose = ctx.on('agent/status', (subject, status) => {
if (subject === agent && status === 'idle') {
dispose()
resolve()
}
})
})
}
function waitForRetry(ctx: Context, agent: Agent, retryNumber: number): Promise<Extract<SessionEvent, { type: 'llm/retry' }>> {
return new Promise((resolve) => {
const dispose = ctx.on('session/event', (session, event) => {
if (session === agent.session && event.type === 'llm/retry' && event.data.retry === retryNumber) {
dispose()
resolve(event)
}
})
})
}
let context: Context | undefined
afterEach(async () => {
vi.useRealTimers()
await context?.fiber.dispose()
context = undefined
})
describe('bounded transient retry policy', () => {
it('records the scheduled delay before opening a fresh request attempt', async () => {
vi.useFakeTimers()
const adapter = new ScriptedAdapter([
new LlmError('busy', 'RATE_LIMIT', { status: 429 }),
textResponse('done'),
])
;({ ctx: context } = await harness(adapter))
const agent = context.agentLoop.create(SessionId('retry-success'), {
provider: 'mock',
model: 'mock',
})
const scheduled = new Promise<Extract<(typeof agent.session.events)[number], { type: 'llm/retry' }>>((resolve) => {
const dispose = context?.on('session/event', (session, event) => {
if (session === agent.session && event.type === 'llm/retry') {
dispose?.()
resolve(event)
}
})
})
agent.send([{ type: 'text', text: 'go' }])
const event = await scheduled
expect(event.data).toEqual({
turn: 1,
step: 1,
retry: 1,
maxRetries: 2,
delayMs: 500,
failure: { message: 'busy', code: 'RATE_LIMIT', status: 429 },
})
expect(adapter.requests).toHaveLength(1)
await vi.advanceTimersByTimeAsync(499)
expect(adapter.requests).toHaveLength(1)
const idle = waitForIdle(context, agent)
await vi.advanceTimersByTimeAsync(1)
await idle
expect(adapter.requests).toHaveLength(2)
expect(agent.session.events.filter(item => item.type === 'step/start').map(item => item.data.step))
.toEqual([1, 2])
expect(agent.session.deriveMessages().at(-1)).toEqual({
role: 'assistant',
content: [{ type: 'text', text: 'done' }],
provenance: { provider: 'mock', model: 'mock' },
})
})
it('leaves partial failed chunks on their step without committing a message or tool side effect', async () => {
vi.useFakeTimers()
const adapter = new ScriptedAdapter([
partialToolFailure(new LlmError('stream interrupted', 'TRANSPORT')),
textResponse('recovered'),
])
;({ ctx: context } = await harness(adapter))
let toolExecutions = 0
context.tools.register(defineTool({
name: 'danger',
description: 'must not run for a failed provider attempt',
parameters: {},
async execute() {
toolExecutions += 1
return [{ type: 'text', text: 'unexpected' }]
},
}))
const agent = context.agentLoop.create(SessionId('retry-partial'), { provider: 'mock', model: 'mock' })
const scheduled = waitForRetry(context, agent, 1)
agent.send([{ type: 'text', text: 'go' }])
await scheduled
const idle = waitForIdle(context, agent)
await vi.advanceTimersByTimeAsync(500)
await idle
const failedChunks = agent.session.events.filter(event =>
event.type === 'assistant/chunk' && event.data.step === 1,
)
expect(failedChunks).toHaveLength(6)
expect(agent.session.events.filter(event => event.type === 'assistant/message').map(event => event.data.step))
.toEqual([2])
expect(agent.session.events.some(event => event.type === 'tool/call')).toBe(false)
expect(toolExecutions).toBe(0)
expect(agent.session.deriveMessages().at(-1)).toMatchObject({
role: 'assistant',
content: [{ type: 'text', text: 'recovered' }],
provenance: { provider: 'mock', model: 'mock' },
})
})
it('applies bounded exponential jitter and stops after the configured budget', async () => {
vi.useFakeTimers()
const samples = [0, 1]
const adapter = new ScriptedAdapter([
new LlmError('busy one', 'SERVER'),
new LlmError('busy two', 'SERVER'),
new LlmError('busy three', 'SERVER'),
])
;({ ctx: context } = await harness(adapter, { jitterRatio: 0.1 }, undefined, {
random: () => samples.shift() ?? 0.5,
}))
const agent = context.agentLoop.create(SessionId('retry-exhausted'), { provider: 'mock', model: 'mock' })
const first = waitForRetry(context, agent, 1)
agent.send([{ type: 'text', text: 'go' }])
expect((await first).data.delayMs).toBe(450)
const second = waitForRetry(context, agent, 2)
await vi.advanceTimersByTimeAsync(450)
expect((await second).data.delayMs).toBe(1_100)
const idle = waitForIdle(context, agent)
await vi.advanceTimersByTimeAsync(1_100)
await idle
expect(adapter.requests).toHaveLength(3)
expect(agent.session.events.filter(event => event.type === 'llm/retry')).toHaveLength(2)
expect(agent.session.events.at(-1)).toMatchObject({
type: 'turn/end',
data: { reason: { kind: 'error', failure: { message: 'busy three', code: 'SERVER' } } },
})
})
it('uses a bounded provider Retry-After verbatim and delegates an over-cap instruction', async () => {
vi.useFakeTimers()
const accepted = new ScriptedAdapter([
new LlmError('wait', 'RATE_LIMIT', { providerRetryAfterMs: 2_000 }),
textResponse('done'),
])
;({ ctx: context } = await harness(accepted, { jitterRatio: 1 }))
const acceptedAgent = context.agentLoop.create(SessionId('retry-after-accepted'), { provider: 'mock', model: 'mock' })
const scheduled = waitForRetry(context, acceptedAgent, 1)
acceptedAgent.send([{ type: 'text', text: 'go' }])
expect((await scheduled).data.delayMs).toBe(2_000)
const acceptedIdle = waitForIdle(context, acceptedAgent)
await vi.advanceTimersByTimeAsync(2_000)
await acceptedIdle
expect(accepted.requests).toHaveLength(2)
await context.fiber.dispose()
const rejected = new ScriptedAdapter([
new LlmError('wait too long', 'RATE_LIMIT', { providerRetryAfterMs: 10_001 }),
])
;({ ctx: context } = await harness(rejected))
const rejectedAgent = context.agentLoop.create(SessionId('retry-after-rejected'), { provider: 'mock', model: 'mock' })
const rejectedIdle = waitForIdle(context, rejectedAgent)
rejectedAgent.send([{ type: 'text', text: 'go' }])
await rejectedIdle
expect(rejected.requests).toHaveLength(1)
expect(rejectedAgent.session.events.some(event => event.type === 'llm/retry')).toBe(false)
})
it('delegates non-transient failures without scheduling a timer', async () => {
vi.useFakeTimers()
const adapter = new ScriptedAdapter([new LlmError('bad key', 'AUTH')])
;({ ctx: context } = await harness(adapter))
const agent = context.agentLoop.create(SessionId('retry-auth'), { provider: 'mock', model: 'mock' })
const idle = waitForIdle(context, agent)
agent.send([{ type: 'text', text: 'go' }])
await idle
expect(adapter.requests).toHaveLength(1)
expect(agent.session.events.some(event => event.type === 'llm/retry')).toBe(false)
expect(vi.getTimerCount()).toBe(0)
})
it('aborts and drains a captured backoff before plugin disposal completes', async () => {
vi.useFakeTimers()
const adapter = new ScriptedAdapter([
new LlmError('temporary', 'TRANSPORT'),
textResponse('must not run'),
])
const mounted = await harness(adapter)
context = mounted.ctx
const agent = context.agentLoop.create(SessionId('retry-hmr'), { provider: 'mock', model: 'mock' })
const scheduled = waitForRetry(context, agent, 1)
agent.send([{ type: 'text', text: 'go' }])
await scheduled
const idle = waitForIdle(context, agent)
await mounted.retryFiber.dispose()
await idle
await vi.advanceTimersByTimeAsync(60_000)
expect(adapter.requests).toHaveLength(1)
expect(agent.session.events.filter(event => event.type === 'step/start')).toHaveLength(1)
expect(vi.getTimerCount()).toBe(0)
})
it('does not make plugin disposal wait for a delegated recovery policy', async () => {
const adapter = new ScriptedAdapter([new LlmError('bad key', 'AUTH')])
const mounted = await harness(adapter)
context = mounted.ctx
const downstream = Promise.withResolvers<RequestErrorDecision>()
const entered = Promise.withResolvers<undefined>()
context.on('agent/request-error', () => {
entered.resolve(undefined)
return downstream.promise
})
const agent = context.agentLoop.create(SessionId('retry-delegated-disposal'), {
provider: 'mock',
model: 'mock',
})
const idle = waitForIdle(context, agent)
agent.send([{ type: 'text', text: 'go' }])
await entered.promise
const disposing = mounted.retryFiber.dispose()
let timer: ReturnType<typeof setTimeout> | undefined
const outcome = await Promise.race([
disposing.then(() => 'disposed' as const),
new Promise<'blocked'>((resolve) => { timer = setTimeout(() => { resolve('blocked') }, 100) }),
])
if (timer !== undefined) clearTimeout(timer)
downstream.resolve({ action: 'fail' })
await disposing
await idle
expect(outcome).toBe('disposed')
expect(adapter.requests).toHaveLength(1)
})
it('fails a captured callback after disposal without entering downstream policy', async () => {
const adapter = new ScriptedAdapter([new LlmError('bad key', 'AUTH')])
const captured = Promise.withResolvers<undefined>()
let invokeCaptured: (() => Promise<void>) | undefined
const mounted = await harness(adapter, {}, (ctx) => {
ctx.on('agent/request-error', (_agent, _turn, _step, _error, _failure, _history, _signal, next) => {
return new Promise<RequestErrorDecision>((resolve) => {
invokeCaptured = async () => { resolve(await next()) }
captured.resolve(undefined)
})
})
})
context = mounted.ctx
let downstreamCalls = 0
context.on('agent/request-error', async (_agent, _turn, _step, _error, _failure, _history, _signal, next) => {
downstreamCalls += 1
return next()
})
const agent = context.agentLoop.create(SessionId('retry-captured-disposal'), {
provider: 'mock',
model: 'mock',
})
const idle = waitForIdle(context, agent)
agent.send([{ type: 'text', text: 'go' }])
await captured.promise
await mounted.retryFiber.dispose()
if (invokeCaptured === undefined) throw new Error('request-error waterfall did not capture retry callback')
await invokeCaptured()
await idle
expect(downstreamCalls).toBe(0)
expect(adapter.requests).toHaveLength(1)
})
it('lets turn cancellation win during backoff without opening another step', async () => {
vi.useFakeTimers()
const adapter = new ScriptedAdapter([
new LlmError('temporary', 'TIMEOUT'),
textResponse('must not run'),
])
;({ ctx: context } = await harness(adapter))
const agent = context.agentLoop.create(SessionId('retry-cancel'), { provider: 'mock', model: 'mock' })
const scheduled = waitForRetry(context, agent, 1)
agent.send([{ type: 'text', text: 'go' }])
await scheduled
const idle = waitForIdle(context, agent)
agent.cancel('user cancelled during retry')
await idle
expect(adapter.requests).toHaveLength(1)
expect(agent.session.events.at(-1)).toMatchObject({
type: 'turn/end',
data: { reason: { kind: 'aborted', reason: 'user cancelled during retry' } },
})
expect(vi.getTimerCount()).toBe(0)
})
it('lets an earlier recovery listener cancel before retry policy runs', async () => {
vi.useFakeTimers()
const adapter = new ScriptedAdapter([
new LlmError('temporary', 'SERVER'),
textResponse('must not run'),
])
;({ ctx: context } = await harness(adapter, {}, (ctx) => {
ctx.on('agent/request-error', async (agent, _turn, _step, _error, _failure, _history, _signal, next) => {
agent.cancel('cancelled by earlier recovery policy')
return next()
})
}))
const agent = context.agentLoop.create(SessionId('retry-pre-cancel'), { provider: 'mock', model: 'mock' })
const idle = waitForIdle(context, agent)
agent.send([{ type: 'text', text: 'go' }])
await idle
expect(adapter.requests).toHaveLength(1)
expect(agent.session.events.some(event => event.type === 'llm/retry')).toBe(false)
expect(agent.session.events.at(-1)).toMatchObject({
type: 'turn/end',
data: { reason: { kind: 'aborted', reason: 'cancelled by earlier recovery policy' } },
})
})
it('handles synchronous cancellation from the retry status event', async () => {
vi.useFakeTimers()
const adapter = new ScriptedAdapter([
new LlmError('temporary', 'SERVER'),
textResponse('must not run'),
])
;({ ctx: context } = await harness(adapter))
const agent = context.agentLoop.create(SessionId('retry-event-cancel'), { provider: 'mock', model: 'mock' })
context.on('session/event', (session, event) => {
if (session === agent.session && event.type === 'llm/retry') agent.cancel('cancelled by retry observer')
})
const idle = waitForIdle(context, agent)
agent.send([{ type: 'text', text: 'go' }])
await idle
expect(adapter.requests).toHaveLength(1)
expect(agent.session.events.filter(event => event.type === 'llm/retry')).toHaveLength(1)
expect(vi.getTimerCount()).toBe(0)
})
it.each([
[{ maxTransientRetries: -1 }, /maxTransientRetries/],
[{ maxTransientRetries: 1.5 }, /maxTransientRetries/],
[{ initialDelayMs: 0 }, /initialDelayMs/],
[{ maxDelayMs: Number.POSITIVE_INFINITY }, /maxDelayMs/],
[{ initialDelayMs: MAX_TIMER_DELAY_MS + 1 }, /initialDelayMs/],
[{ maxDelayMs: MAX_TIMER_DELAY_MS + 1 }, /maxDelayMs/],
[{ initialDelayMs: 20, maxDelayMs: 10 }, /less than or equal/],
[{ jitterRatio: 1.1 }, /jitterRatio/],
[{ retryableCodes: [] }, /must not be empty/],
[{ retryableCodes: ['SERVER', 'SERVER'] }, /duplicates/],
[{ retryableCodes: [''] }, /non-empty strings/],
] as const)('fails direct composition for invalid config %#', (config, message) => {
expect(() => { retry.apply(new Context(), config as retry.Config) }).toThrow(message)
})
})

View File

@@ -0,0 +1,33 @@
{
"extends": "../../../tsconfig.base.json",
"compilerOptions": {
"rootDir": "src",
"outDir": "lib/types"
},
"include": [
"src"
],
"references": [
{
"path": "../../../vendor/cosmokit"
},
{
"path": "../../../vendor/cordis"
},
{
"path": "../../../vendor/schemastery"
},
{
"path": "../../llm/llm"
},
{
"path": "../../core/session"
},
{
"path": "../../core/agent"
},
{
"path": "../../util/timeout"
}
]
}

View File

@@ -13,7 +13,7 @@ An adapter registry plus a single streaming call surface, interceptable via a wa
- `ctx.llm.listModels(provider: string): Promise<LlmModelInfo[]>` Discover the models one registered provider currently advertises.
- `ctx.llm.stream(options: GenerateOptions): AsyncIterable<StreamChunk>` Stream one model call as raw chunks (token-level deltas). Consumers assemble the chunks into blocks/messages with `BlockAssembler`.
`LlmService` preserves errors from final adapter selection, synchronous dispatch, iterator construction, and iteration, and binds their provenance to the exact stream handle returned for that model call. `isLlmAdapterFailure(stream, value)` reports only errors from that call's final adapter boundary; nested model calls, `llm/stream` middleware, and downstream consumer failures remain unclassified for the outer call. Classification does not replace the adapter's original coded `Error`.
`LlmService` preserves errors from final adapter selection, synchronous dispatch, iterator construction, and iteration, and binds their provenance to the exact stream handle returned for that model call. `isLlmAdapterFailure(stream, value)` reports only errors from that call's final adapter boundary; `llmFailureOf(stream, value)` returns the adjacent immutable `LlmFailure`. Nested model calls, `llm/stream` middleware, and downstream consumer failures remain unclassified for the outer call. Classification never replaces or mutates the adapter's original coded `Error`.
Provider and model metadata is a discovery surface, not a routing whitelist. `registerAdapter()` still owns provider exclusivity, while an adapter may accept model ids absent from `listModels()`; consumers must not reject a request because its model is unlisted. Returned metadata is detached and invalid or duplicate adapter entries fail with `INVALID_ADAPTER` or `INVALID_CATALOG`.
@@ -21,12 +21,12 @@ Provider and model metadata is a discovery surface, not a routing whitelist. `re
| Event | Mode | Purpose |
|---|---|---|
| `llm/stream` | waterfall | Intercept/wrap every streaming model call (retry, caching, routing) |
| `llm/stream` | waterfall | Intercept/wrap every streaming model call for caching, logging, or routing |
### Extension points
- Subclass `LlmAdapter` and call `ctx.llm.registerAdapter(providers, adapter)` to add one or more provider routes. `GenerateOptions.provider` selects the adapter; `GenerateOptions.model` is adapter-owned and may be resolved dynamically. Override `providerInfo()` and asynchronous `listModels()` to expose selector metadata; their defaults use the route id as its name and advertise no models.
- Wrap `llm/stream` via `ctx.on()` waterfall listeners for caching, retry, logging, rate-limiting, etc.
- Wrap `llm/stream` via `ctx.on()` waterfall listeners for caching, logging, or routing. A wrapper that retries after emitting a chunk has no durable attempt boundary; shipped agent retry policy therefore uses `agent/request-error` instead.
### Content-block vocabulary (`types.ts`)
@@ -47,9 +47,10 @@ Every product adapter sends application identity on provider HTTP requests. `att
- `LlmAdapter` — abstract base class for provider adapters. The only required method is `stream()`.
- `BlockAssembler` — incrementally assembles raw chunks into complete content blocks and an assistant message. The agent loop feeds it raw chunks (logging them for replay) while reading the assembled blocks/message for history.
- `HarnessError` — base class for the harness error taxonomy: a stable `code` string (distinct from the human `message`) plus `cause` chaining. Lives here, in the leaf package every other imports, so a single base is shared without a new dependency edge. Per-package errors (`LlmError`, `ToolArgsError`, `InvariantError`, …) extend it. `isHarnessError(value)` narrows at seams.
- `LlmError` — extends `HarnessError`; its stable `code` string (`NO_ADAPTER`, `DUPLICATE_ADAPTER`, and adapter codes like `AUTH`/`RATE_LIMIT`) is the programmatic failure contract.
- `LlmError` — extends `HarnessError`; its stable `code` string (`NO_ADAPTER`, `DUPLICATE_ADAPTER`, and adapter codes like `AUTH`/`RATE_LIMIT`) matches its frozen serializable `failure.code`. The payload may also retain validated status, `Retry-After`, and branded provider request id facts; policy remains outside the error.
- `errorChain(value)` — renders a thrown value with its full `cause` chain and AggregateError members for diagnostic surfaces (UI notices, logger lines, durable `turn/end` messages), so transport wrappers like undici's `TypeError: fetch failed` surface the underlying `ECONNREFUSED`/DNS/TLS detail instead of masking it. Rendering only — route on `code`, never by parsing the result.
- `CONTEXT_WINDOW_EXCEEDED_CODE` — the provider-neutral code both DeepSeek adapters use when a request exceeds the model context window, regardless of thrown-HTTP versus in-band finish delivery. `isContextWindowExceededError(detail)` is their shared conservative classifier for OpenAI-compatible provider detail.
- `QUOTA_EXCEEDED_CODE` — the non-transient provider-neutral code for exhausted account quota, balance, credits, budget, or usage limits. `isQuotaExceededError(detail)` keeps those failures distinct from request-rate limits.
### Real adapters
@@ -65,7 +66,7 @@ Pass-through; the registry preserves the assembled request prefix, while the sel
## Known Limitations and Deferred Work
- **No default retry/caching/rate-limit policy ships in this service** — `llm/stream` remains the call-wrapper seam; the agent loop separately offers proven model-request failures to `agent/request-error`, whose default preserves the original failure.
- **No default retry/caching/rate-limit policy ships in this service** — `llm/stream` remains a single-attempt call-wrapper seam; the agent loop separately offers proven model-request failures to `agent/request-error`, whose default preserves the original failure. `@deepseek-ai/dsh-llm-retry` is an optional policy plugin loaded by the shared example spine.
- **`GenerateOptions` sampling is `temperature`/`maxTokens`/`stop` only** — no `tool_choice`, `top_p`, or penalty fields; the vocabulary grows when a producer lands ([dropped inert knobs](../../../.agents/notes/implemented/simplification/2026-07-04-drop-inert-request-knobs.md)).
- **Producer-gated variants stay out until produced** — `prefill`, per-tool `strict`, block `cache` hints, and the `agent` message-source variant were pruned as producerless ([Agent Note](../../../.agents/notes/implemented/simplification/2026-07-04-prune-producerless-vocabulary-variants.md)).
- **`BlockAssembler` handles core block kinds only** — a plugin-added block type whose stream is never closed by `block-end` makes `blocks()` throw.

View File

@@ -5,10 +5,10 @@
*/
import { HarnessError } from './error.ts'
import type { StreamChunk } from './types.ts'
import type { LlmFailure, StreamChunk } from './types.ts'
/** Errors proven to originate in one model call's final adapter boundary. */
export type AdapterFailureScope = WeakSet<Error>
/** Errors and normalized facts proven to originate in one model call's final adapter boundary. */
export type AdapterFailureScope = WeakMap<Error, LlmFailure>
/** Call-local failure scopes keyed by the exact stream handle returned to a consumer. */
const adapterFailureScopes = new WeakMap<AsyncIterable<StreamChunk>, AdapterFailureScope>()
@@ -47,10 +47,71 @@ export function markLlmAdapterFailure(
const error = value instanceof Error
? value as Error & { code?: string }
: new HarnessError(String(value), 'UNKNOWN', { cause: value })
failures.add(error)
const carried = error instanceof HarnessError ? ownFailureSnapshot(error) : undefined
const failure = carried !== undefined && carried.code === error.code ? carried : Object.freeze({
message: errorMessage(error),
code: harnessErrorCode(error),
})
failures.set(error, failure)
return error
}
/** Snapshot an own data property without invoking an SDK-defined accessor. */
function ownFailureSnapshot(error: Error): LlmFailure | undefined {
try {
const descriptor = Object.getOwnPropertyDescriptor(error, 'failure')
return descriptor !== undefined && 'value' in descriptor
? failureSnapshot(descriptor.value)
: undefined
} catch (_sdkPropertyTrap) {
return undefined
}
}
/** Validate and detach an arbitrary serializable failure payload. */
function failureSnapshot(value: unknown): LlmFailure | undefined {
if (typeof value !== 'object' || value === null) return undefined
try {
const candidate = value as Partial<LlmFailure>
const message = candidate.message
const code = candidate.code
const status = candidate.status
const providerRetryAfterMs = candidate.providerRetryAfterMs
const requestId = candidate.requestId
if (typeof message !== 'string' || message.length === 0
|| typeof code !== 'string' || code.length === 0
|| (status !== undefined && (!Number.isInteger(status) || status < 100 || status > 599))
|| (providerRetryAfterMs !== undefined
&& (!Number.isFinite(providerRetryAfterMs) || providerRetryAfterMs <= 0))
|| (requestId !== undefined && (typeof requestId !== 'string' || requestId.length === 0))) return undefined
return Object.freeze({
message,
code,
...status === undefined ? {} : { status },
...providerRetryAfterMs === undefined ? {} : { providerRetryAfterMs },
...requestId === undefined ? {} : { requestId },
})
} catch (_sdkFailureGetter) {
return undefined
}
}
/** Read an SDK error message without letting an accessor replace the primary failure. */
function errorMessage(error: Error): string {
try {
const message: unknown = error.message
if (typeof message === 'string' && message.length > 0) return message
} catch (_sdkMessageGetter) {
// The fallback below preserves a serializable failure beside the original Error.
}
return 'LLM adapter failed'
}
/** Trust only Harness-owned codes; third-party SDK codes are not our taxonomy. */
function harnessErrorCode(error: Error): string {
return error instanceof HarnessError ? error.code : 'UNKNOWN'
}
/**
* Whether a failure came from final adapter dispatch, iterator construction,
* or iteration for the call represented by the exact returned stream handle.
@@ -65,3 +126,18 @@ export function isLlmAdapterFailure(
const failures = adapterFailureScopes.get(stream)
return value instanceof Error && failures !== undefined && failures.has(value)
}
/**
* Retrieve normalized provider facts only for an Error tagged by this exact
* model call's final adapter boundary.
* @param stream - the exact stream returned to the consumer.
* @param value - the caught failure.
* @returns the immutable facts for that call, or `undefined` for middleware, nested, or consumer failures.
*/
export function llmFailureOf(
stream: AsyncIterable<StreamChunk>,
value: unknown,
): LlmFailure | undefined {
const failures = adapterFailureScopes.get(stream)
return value instanceof Error ? failures?.get(value) : undefined
}

View File

@@ -1,5 +1,6 @@
/**
* dsh-llm's owned branded id: `CallId` (tool-call correlation).
* dsh-llm's owned branded ids: tool-call correlation and provider request
* diagnostics.
*
* The `Branded<B>` primitive itself lives in `@deepseek-ai/dsh-brand` (a
* zero-dependency type-only package) so every owner of a cross-boundary id can
@@ -25,3 +26,15 @@ export type CallId = Branded<'CallId'>
export function CallId(id: string): CallId {
return id as CallId
}
/** Provider-issued request identifier retained for diagnostics across package boundaries. */
export type ProviderRequestId = Branded<'ProviderRequestId'>
/**
* Brand a provider-issued request identifier.
* @param id - the opaque provider-issued string.
* @returns the same string, branded; no validation is performed.
*/
export function ProviderRequestId(id: string): ProviderRequestId {
return id as ProviderRequestId
}

View File

@@ -24,6 +24,9 @@ export class HarnessError extends Error {
/** Canonical provider-neutral code for a model request rejected because its context window was exceeded. */
export const CONTEXT_WINDOW_EXCEEDED_CODE = 'CONTEXT_WINDOW_EXCEEDED'
/** Canonical provider-neutral code for an exhausted account quota or balance. */
export const QUOTA_EXCEEDED_CODE = 'QUOTA'
/** Structured codes and plain phrases that explicitly name a context bound being exceeded. */
const STRUCTURED_CONTEXT_OVERFLOW = new RegExp(
String.raw`(?:^|[^a-z0-9])context[\s_-](?:length|window)[\s_-]`
@@ -62,6 +65,20 @@ export function isContextWindowExceededError(detail: string): boolean {
|| EXCEEDS_MODEL_CONTEXT.test(detail)
}
/**
* Recognize provider wording that identifies an exhausted account quota rather
* than a transient request-rate limit.
* @param detail - provider error code/type/message text joined into one string.
* @returns true only for terminal quota, balance, credit, budget, or usage-limit wording.
*/
export function isQuotaExceededError(detail: string): boolean {
return /\binsufficient[\s_-]+(?:quota|balance|credits?)\b/i.test(detail)
|| /\b(?:quota|usage[\s_-]+limit)[\s_-]+(?:exceeded|exhausted|reached)\b/i.test(detail)
|| /\bexceed(?:ed|s)?[\s_-]+(?:(?:your|the)[\s_-]+)?(?:current[\s_-]+)?quota\b/i.test(detail)
|| /\b(?:balance|credits?)[\s_-]+(?:exhausted|depleted)\b/i.test(detail)
|| /\bout[\s_-]+of[\s_-]+(?:credits?|budget)\b/i.test(detail)
}
/**
* Render a thrown value with its full `cause` chain and AggregateError
* members, so transport wrappers like undici's `TypeError: fetch failed`

View File

@@ -7,7 +7,8 @@
*/
import { Context, Service } from 'cordis'
import type { GenerateOptions, LlmModelInfo, LlmProviderInfo, Message, StreamChunk } from './types.ts'
import type { GenerateOptions, LlmFailure, LlmModelInfo, LlmProviderInfo, Message, StreamChunk } from './types.ts'
import type { ProviderRequestId } from './brand.ts'
import { deepFreeze } from './call-config.ts'
import { HarnessError } from './error.ts'
import { bindAdapterFailureScope, markLlmAdapterFailure } from './adapter-failure.ts'
@@ -21,7 +22,7 @@ export * from './types.ts'
export { BlockAssembler } from './assembler.ts'
export { callConfigEquals, deepFreeze } from './call-config.ts'
export type { LlmCallConfig } from './call-config.ts'
export { isLlmAdapterFailure } from './adapter-failure.ts'
export { isLlmAdapterFailure, llmFailureOf } from './adapter-failure.ts'
declare module 'cordis' {
interface Context {
@@ -44,14 +45,53 @@ declare module 'cordis' {
}
}
/** Structured provider facts and cause accepted by {@link LlmError}. */
export interface LlmErrorOptions extends ErrorOptions {
/** Valid HTTP status observed at the provider boundary. */
status?: number
/** Positive finite provider-requested delay in milliseconds. */
providerRetryAfterMs?: number
/** Non-empty opaque provider request id. */
requestId?: ProviderRequestId
}
/**
* Typed error for LLM-related failures. Extends {@link HarnessError}, so the
* `code` string (e.g. `AUTH`, `RATE_LIMIT`, `NO_ADAPTER`) is shared taxonomy.
*/
export class LlmError extends HarnessError {
constructor(message: string, code: string, options?: ErrorOptions) {
/** Serializable facts retained beside this live Error. */
readonly failure: LlmFailure
/**
* @param message - non-empty human-readable failure summary.
* @param code - non-empty stable provider-neutral machine code.
* @param options - optional cause and validated serializable provider facts.
*/
constructor(message: string, code: string, options?: LlmErrorOptions) {
if (typeof message !== 'string' || message.length === 0) throw new Error('LlmError message must be a non-empty string')
if (typeof code !== 'string' || code.length === 0) throw new Error('LlmError code must be a non-empty string')
if (options?.status !== undefined
&& (!Number.isInteger(options.status) || options.status < 100 || options.status > 599)) {
throw new Error('LlmError status must be an integer from 100 through 599')
}
if (options?.providerRetryAfterMs !== undefined
&& (!Number.isFinite(options.providerRetryAfterMs) || options.providerRetryAfterMs <= 0)) {
throw new Error('LlmError providerRetryAfterMs must be a positive finite number')
}
if (options?.requestId !== undefined
&& (typeof options.requestId !== 'string' || options.requestId.length === 0)) {
throw new Error('LlmError requestId must be a non-empty string')
}
super(message, code, options)
this.name = 'LlmError'
this.failure = Object.freeze({
message,
code,
...options?.status === undefined ? {} : { status: options.status },
...options?.providerRetryAfterMs === undefined ? {} : { providerRetryAfterMs: options.providerRetryAfterMs },
...options?.requestId === undefined ? {} : { requestId: options.requestId },
})
}
}
@@ -262,7 +302,7 @@ export class LlmService extends Service {
* @returns the chunk stream, possibly wrapped by `llm/stream` listeners.
*/
stream(options: GenerateOptions): AsyncIterable<StreamChunk> {
const failures: AdapterFailureScope = new WeakSet<Error>()
const failures: AdapterFailureScope = new WeakMap<Error, LlmFailure>()
const stream = this.ctx.waterfall(this, 'llm/stream', options, () => this.adapterStream(options, failures))
return bindAdapterFailureScope(stream, failures)
}

View File

@@ -5,7 +5,21 @@
*/
import type { Branded } from '@deepseek-ai/dsh-brand'
import type { CallId } from './brand.ts'
import type { CallId, ProviderRequestId } from './brand.ts'
/** Serializable provider-boundary facts; policy decides whether they are retryable. */
export interface LlmFailure {
/** Human-readable provider or transport failure. */
readonly message: string
/** Stable provider-neutral machine-routing code. */
readonly code: string
/** HTTP status observed at the provider boundary, when available. */
readonly status?: number
/** Provider-requested delay in milliseconds, when valid and available. */
readonly providerRetryAfterMs?: number
/** Opaque provider-issued request identifier for diagnostics. */
readonly requestId?: ProviderRequestId
}
/** Plain text visible to the end user. */
export interface TextBlock {
@@ -98,8 +112,8 @@ export interface FinishReasonMap {
'stop': { kind: 'stop' }
'tool-calls': { kind: 'tool-calls' }
'max-tokens': { kind: 'max-tokens' }
'aborted': { kind: 'aborted' }
'error': { kind: 'error'; message: string; code?: string }
'aborted': { kind: 'aborted'; failure: LlmFailure }
'error': { kind: 'error'; failure: LlmFailure }
}
/** Any known finish reason, derived from {@link FinishReasonMap}; switch on `kind` and fall through unknowns (merge-extensible). */

View File

@@ -41,7 +41,10 @@ const chunkArb: fc.Arbitrary<StreamChunk> = indexArb.chain(index => fc.oneof(
fc.constant<StreamChunk>({ type: 'usage', usage: { inputTokens: 1, outputTokens: 1 } }),
fc.constant<StreamChunk>({ type: 'finish', reason: { kind: 'stop' } }),
fc.constant<StreamChunk>({ type: 'finish', reason: { kind: 'tool-calls' } }),
fc.string().map((message): StreamChunk => ({ type: 'finish', reason: { kind: 'error', message } })),
fc.string({ minLength: 1 }).map((message): StreamChunk => ({
type: 'finish',
reason: { kind: 'error', failure: { message, code: 'UNKNOWN' } },
})),
))
/** A stream is an arbitrary list of chunks (we do NOT force a terminal finish). */

View File

@@ -5,9 +5,12 @@ import LlmService, {
GenerateOptions,
HarnessError,
isContextWindowExceededError,
isQuotaExceededError,
isLlmAdapterFailure,
LlmAdapter,
LlmError,
llmFailureOf,
ProviderRequestId,
StreamChunk,
} from '@deepseek-ai/dsh-llm'
import type { LlmModelInfo, LlmProviderInfo } from '@deepseek-ai/dsh-llm'
@@ -81,6 +84,18 @@ describe('LlmService', () => {
expect(isContextWindowExceededError('context window size must be positive')).toBe(false)
})
it('distinguishes exhausted account quota from transient rate limiting', () => {
for (const detail of [
'insufficient_quota',
'account balance depleted',
'usage-limit-exceeded',
'out of credits',
'OpenAI API error (429): You exceeded your current quota, please check your plan and billing details.',
]) expect(isQuotaExceededError(detail)).toBe(true)
expect(isQuotaExceededError('HTTP 429: rate limit reached')).toBe(false)
expect(isQuotaExceededError('quota resets in one minute')).toBe(false)
})
it('errorChain renders the full cause chain of a wrapped transport failure', () => {
const chain = new TypeError('fetch failed', { cause: new Error('connect ECONNREFUSED 127.0.0.1:443') })
expect(errorChain(chain)).toBe('fetch failed: connect ECONNREFUSED 127.0.0.1:443')
@@ -213,6 +228,151 @@ describe('LlmService', () => {
expect(caught).toBe(original)
expect(isLlmAdapterFailure(stream, caught)).toBe(true)
expect(llmFailureOf(stream, caught)).toEqual({
message: `${boundary} failed`,
code: 'BOUNDARY_FAILED',
})
})
it('keeps structured provider facts beside a frozen third-party Error', async () => {
const original = new LlmError('provider busy', 'RATE_LIMIT', {
status: 429,
providerRetryAfterMs: 1_500,
requestId: ProviderRequestId('req-7'),
})
Object.freeze(original)
const ctx = new Context()
await ctx.plugin(LlmService)
ctx.llm.registerAdapter(['test-provider'], new ThrowingAdapter(original))
const stream = ctx.llm.stream({ provider: 'test-provider', model: 'test-model', messages: [] })
let caught: unknown
try {
for await (const _chunk of stream) { /* drain */ }
} catch (error: unknown) {
caught = error
}
expect(caught).toBe(original)
expect(llmFailureOf(stream, caught)).toEqual({
message: 'provider busy',
code: 'RATE_LIMIT',
status: 429,
providerRetryAfterMs: 1_500,
requestId: ProviderRequestId('req-7'),
})
})
it('does not trust retry facts carried by an unknown third-party Error', async () => {
const carried = { message: 'busy', code: 'SERVER', status: 503 }
const original = Object.assign(new Error('busy'), { failure: carried })
const ctx = new Context()
await ctx.plugin(LlmService)
ctx.llm.registerAdapter(['test-provider'], new ThrowingAdapter(original))
const stream = ctx.llm.stream({ provider: 'test-provider', model: 'test-model', messages: [] })
await expect((async () => {
for await (const _chunk of stream) { /* drain */ }
})()).rejects.toBe(original)
const facts = llmFailureOf(stream, original)
carried.status = 500
expect(facts).toEqual({ message: 'busy', code: 'UNKNOWN' })
expect(Object.isFrozen(facts)).toBe(true)
expect(facts).not.toBe(carried)
})
it('keeps an unknown SDK Error exact without trusting its private code or accessors', async () => {
const original = Object.assign(new Error('socket closed'), { code: 'ECONNRESET' })
Object.defineProperty(original, 'failure', {
get() { throw new Error('SDK failure accessor must not run') },
})
const ctx = new Context()
await ctx.plugin(LlmService)
ctx.llm.registerAdapter(['test-provider'], new ThrowingAdapter(original))
const stream = ctx.llm.stream({ provider: 'test-provider', model: 'test-model', messages: [] })
await expect((async () => {
for await (const _chunk of stream) { /* drain */ }
})()).rejects.toBe(original)
expect(original.code).toBe('ECONNRESET')
expect(llmFailureOf(stream, original)).toEqual({ message: 'socket closed', code: 'UNKNOWN' })
})
it('keeps an SDK Error exact when its message accessor is hostile', async () => {
const original = Object.defineProperty(new Error(), 'message', {
get() { throw new Error('SDK message accessor trap') },
})
const ctx = new Context()
await ctx.plugin(LlmService)
ctx.llm.registerAdapter(['test-provider'], new ThrowingAdapter(original))
const stream = ctx.llm.stream({ provider: 'test-provider', model: 'test-model', messages: [] })
await expect((async () => {
for await (const _chunk of stream) { /* drain */ }
})()).rejects.toBe(original)
expect(llmFailureOf(stream, original)).toEqual({ message: 'LLM adapter failed', code: 'UNKNOWN' })
})
it('falls back safely when SDK objects trap failure inspection or expose malformed facts', async () => {
const propertyTrap = new Proxy(new HarnessError('descriptor trapped', 'SERVER'), {
getOwnPropertyDescriptor(target, property) {
if (property === 'failure') throw new Error('SDK descriptor trap')
return Reflect.getOwnPropertyDescriptor(target, property)
},
})
const throwingFacts = Object.create(null) as Record<string, unknown>
Object.defineProperty(throwingFacts, 'message', {
get() { throw new Error('SDK fact getter trap') },
})
const carrying = (message: string, failure: unknown): HarnessError => Object.defineProperty(
new HarnessError(message, 'SERVER'),
'failure',
{ value: failure },
)
const factGetter = carrying('fact getter failed', throwingFacts)
const malformed = carrying('malformed facts', { message: 'provider busy', code: 'SERVER', requestId: 1 })
const primitive = carrying('primitive facts', 1)
const nullFacts = carrying('null facts', null)
const mismatched = carrying('mismatched facts', { message: 'busy', code: 'RATE_LIMIT' })
for (const [original, expectedMessage] of [
[propertyTrap, 'descriptor trapped'],
[factGetter, 'fact getter failed'],
[malformed, 'malformed facts'],
[primitive, 'primitive facts'],
[nullFacts, 'null facts'],
[mismatched, 'mismatched facts'],
] as const) {
const ctx = new Context()
await ctx.plugin(LlmService)
ctx.llm.registerAdapter(['test-provider'], new ThrowingAdapter(original))
const stream = ctx.llm.stream({ provider: 'test-provider', model: 'test-model', messages: [] })
await expect((async () => {
for await (const _chunk of stream) { /* drain */ }
})()).rejects.toBe(original)
expect(llmFailureOf(stream, original)).toEqual({ message: expectedMessage, code: 'SERVER' })
}
})
it('retains a stable code from a HarnessError without requiring LlmError facts', async () => {
const original = new HarnessError('stable adapter failure', 'ADAPTER_STABLE')
const ctx = new Context()
await ctx.plugin(LlmService)
ctx.llm.registerAdapter(['test-provider'], new ThrowingAdapter(original))
const stream = ctx.llm.stream({ provider: 'test-provider', model: 'test-model', messages: [] })
await expect((async () => {
for await (const _chunk of stream) { /* drain */ }
})()).rejects.toBe(original)
expect(llmFailureOf(stream, original)).toEqual({
message: 'stable adapter failure',
code: 'ADAPTER_STABLE',
})
expect(llmFailureOf(stream, 'not an Error')).toBeUndefined()
expect(llmFailureOf({ [Symbol.asyncIterator]: () => stream[Symbol.asyncIterator]() }, original)).toBeUndefined()
})
it('keeps a nested adapter failure scoped to the nested model call', async () => {
@@ -631,6 +791,16 @@ describe('LlmService', () => {
expect(err.code).toBe('CUSTOM_CODE')
})
it('rejects non-serializable structured failure facts at construction', () => {
expect(() => new LlmError('busy', 'RATE_LIMIT', { status: 42 })).toThrow(/status/)
expect(() => new LlmError('busy', 'RATE_LIMIT', { providerRetryAfterMs: Number.NaN }))
.toThrow(/providerRetryAfterMs/)
expect(() => new LlmError('busy', 'RATE_LIMIT', { requestId: ProviderRequestId('') })).toThrow(/requestId/)
expect(() => new LlmError(1 as never, 'RATE_LIMIT')).toThrow(/message/)
expect(() => new LlmError('busy', 1 as never)).toThrow(/code/)
expect(() => new LlmError('busy', 'RATE_LIMIT', { requestId: 1 as never })).toThrow(/requestId/)
})
it('LlmError extends the shared HarnessError base', async () => {
const { HarnessError, isHarnessError } = await import('@deepseek-ai/dsh-llm')
const cause = new Error('root cause')

View File

@@ -142,7 +142,7 @@ describe('deriveReplayScript', () => {
it('keeps a finish-error chunk in the derived entry (replays naturally)', () => {
const errChunks: StreamChunk[] = [
{ type: 'block-start', index: 0, blockType: 'text' },
{ type: 'finish', reason: { kind: 'error', message: 'boom', code: 'X' } },
{ type: 'finish', reason: { kind: 'error', failure: { message: 'boom', code: 'X' } } },
]
const events = errChunks.map((c, i) => chunkEvent(i + 1, 1, 1, c))
expect(deriveReplayScript(events)).toEqual([{ kind: 'chunks', chunks: errChunks }])

View File

@@ -28,9 +28,9 @@ The `initialize` handshake reports a fixed server identity (`agentInfo: { name:
| `initialize` | static | negotiate `protocolVersion`; advertise baseline prompt capabilities (`text`, plus `resource_link` rendered as text) and `loadSession: true` |
| `session/new` | `ctx.agents.create({ sessionId, meta:{cwd} })` | creates a new session/agent; N concurrent sessions are allowed, keyed by id; advertises the effective command snapshot; `cwd` must be absolute (it becomes the session's workspace — see Per-session cwd); non-empty `additionalDirectories` and `mcpServers` rejected |
| `session/load` | `ctx.agents.resume(...)` | reserves the id, verifies the persisted cwd, resumes, replays user, assistant, and tool events, and re-advertises commands |
| `session/prompt` | `ctx.commands.execute()` or `agent.send()` | a flattened prompt beginning with `/` stays in the direct command plane; ordinary prompts support ACP `text` and `resource_link`; unsupported content and empty prompts are rejected; one request is in flight per session |
| `session/prompt` | `ctx.commands.execute()` or `agent.send()` | a flattened prompt beginning with `/` stays in the direct command plane; ordinary prompts support ACP `text` and `resource_link`; unsupported content and empty prompts are rejected; one request is in flight per session and settles on the owning turn's end, with an error turn rejecting the RPC |
| `session/cancel` | command `AbortSignal` or `agent.cancel()` | aborts the exact direct command, or applies the queue-aware agent cancel and settles its prompt `cancelled`; one session never cancels another |
| `session/update` | `session/event` | streams user replay, assistant text/reasoning, and tool render intents |
| `session/update` | `session/event` | streams user replay, assistant text/reasoning, retry/failure attempt markers, and tool render intents |
| `elicitation/create` | `ctx.userInteraction.ask()` | maps `ask_user_question` questions to ACP form elicitations; option descriptions are shown in enum titles, `multi_select` uses ACP array enums, optionless requests use a required `custom` field, and a non-empty custom answer overrides any selected choice |
| `session/request_permission` | `approval/request` listener | answers one-shot allow/reject requests for bridge-owned calls; foreign or call-less requests delegate and fail closed if unanswered — see "Permission prompts" |
| `session/set_config_option` | agent-scoped request target / `ctx.permission.set()` | per-session provider+model and permission-preset switching over [session config options](https://agentclientprotocol.com/protocol/session-config-options) — see "Session config options" |
@@ -53,6 +53,8 @@ When `ctx.permission` is composed, the bridge also advertises a `permission` sel
The shared [`ctx.tasks` runtime](../../tasks/tasks/) fences access to predictable task ids by the owning session; ACP sessions therefore cannot read or stop one another's background work.
ACP updates are append-only, so `llm/retry` emits a visible separator that marks preceding partial model output discarded before the next attempt streams. A terminal model-request failure emits the same discarded-output warning; replay derives both markers from the durable events.
## Per-session cwd
`session/new` records the request's absolute cwd in the session header. Before constructing an agent, `session/load` uses persisted metadata to require an absolute request cwd that matches the stored one. Bash defaults to that workspace; an explicit relative workdir resolves against it, and multiple sessions may use different workspaces. `additionalDirectories` remains unsupported.

View File

@@ -31,6 +31,7 @@
"@deepseek-ai/dsh-bash": "^0.0.1",
"@deepseek-ai/dsh-commands": "^0.0.1",
"@deepseek-ai/dsh-llm": "^0.0.1",
"@deepseek-ai/dsh-llm-retry": "^0.0.1",
"@deepseek-ai/dsh-permission": "^0.0.1",
"@deepseek-ai/dsh-sandbox": "^0.0.1",
"@deepseek-ai/dsh-session": "^0.0.1",
@@ -52,6 +53,7 @@
"@deepseek-ai/dsh-fs-policy": "workspace:^",
"@deepseek-ai/dsh-invariants": "workspace:^",
"@deepseek-ai/dsh-llm": "workspace:^",
"@deepseek-ai/dsh-llm-retry": "workspace:^",
"@deepseek-ai/dsh-permission": "workspace:^",
"@deepseek-ai/dsh-sandbox": "workspace:^",
"@deepseek-ai/dsh-session": "workspace:^",

View File

@@ -46,6 +46,7 @@ import {
} from '@agentclientprotocol/sdk'
import type { ContentBlock, LlmCallConfig, LlmModelInfo, LlmProviderInfo } from '@deepseek-ai/dsh-llm'
import { assertNever, CallId } from '@deepseek-ai/dsh-llm'
import type {} from '@deepseek-ai/dsh-llm-retry'
import type { Agent } from '@deepseek-ai/dsh-agent'
import type {} from '@deepseek-ai/dsh-commands'
import { SessionId } from '@deepseek-ai/dsh-session'
@@ -564,7 +565,7 @@ export function apply(ctx: Context, config: AcpConfig): void {
reason: TurnEndReason,
): void => {
if (reason.kind === 'error') {
inflight.reject(internalError(`turn failed: ${reason.message}`))
inflight.reject(internalError(`turn failed: ${'failure' in reason ? reason.failure.message : reason.message}`))
} else {
inflight.resolve(turnEndToStopReason(reason))
}
@@ -1176,6 +1177,7 @@ function validateMcpServers(params: { mcpServers?: unknown[] }): void {
* identical update stream from the same event log.
*
* - `assistant/chunk` text-delta/reasoning-delta → message/thought chunks
* - `llm/retry` and terminal model failure → visible discarded-attempt markers
* - `user/message` → `user_message_chunk` during load replay only — so a
* loaded transcript reconstructs the USER side of each turn without echoing
* a live `session/prompt` back to the client
@@ -1223,6 +1225,13 @@ export function streamSessionEventUpdate(
}
return
}
case 'llm/retry': {
const text = '\n\n[Previous model attempt discarded; retrying '
+ `${event.data.retry}/${event.data.maxRetries} in ${event.data.delayMs}ms: `
+ `${event.data.failure.message}]\n\n`
notify({ sessionId, update: { sessionUpdate: 'agent_message_chunk', content: { type: 'text', text } } })
return
}
case 'user/message': {
if (!includeUserMessages) return
// Replay the user's prompt so a loaded session shows both sides of each
@@ -1254,7 +1263,13 @@ export function streamSessionEventUpdate(
notify({ sessionId, update: { sessionUpdate: 'plan', ...todosToPlan(event.data.todos) } })
return
}
// turn/step boundaries, context/message, steering,
case 'turn/end': {
if (event.data.reason.kind !== 'error' || !('failure' in event.data.reason)) return
const text = `\n\n[Model attempt failed; any partial output above is discarded: ${event.data.reason.failure.message}]\n\n`
notify({ sessionId, update: { sessionUpdate: 'agent_message_chunk', content: { type: 'text', text } } })
return
}
// non-error turn/step boundaries, context/message, steering,
// assistant/message — no direct ACP client update.
default:
return

View File

@@ -101,7 +101,7 @@ export function errorResponse(message: string): StreamChunk[] {
return [
{ type: 'block-start', index: 0, blockType: 'text' },
{ type: 'text-delta', index: 0, text: 'partial' },
{ type: 'finish', reason: { kind: 'error', message, code: 'PROVIDER_ERROR' } },
{ type: 'finish', reason: { kind: 'error', failure: { message, code: 'PROVIDER_ERROR' } } },
]
}

View File

@@ -65,6 +65,37 @@ describe('streamSessionEventUpdate', () => {
.toEqual([])
})
it('marks retry and terminal model failure boundaries but not ordinary turn errors', () => {
expect(updatesFor(evt('llm/retry', {
turn: 1,
step: 1,
retry: 1,
maxRetries: 2,
delayMs: 500,
failure: { message: 'backend busy', code: 'SERVER' },
}))).toEqual([{
sessionUpdate: 'agent_message_chunk',
content: {
type: 'text',
text: '\n\n[Previous model attempt discarded; retrying 1/2 in 500ms: backend busy]\n\n',
},
}])
expect(updatesFor(evt('turn/end', {
turn: 1,
reason: { kind: 'error', step: 2, failure: { message: 'still busy', code: 'SERVER' } },
}))).toEqual([{
sessionUpdate: 'agent_message_chunk',
content: {
type: 'text',
text: '\n\n[Model attempt failed; any partial output above is discarded: still busy]\n\n',
},
}])
expect(updatesFor(evt('turn/end', {
turn: 1,
reason: { kind: 'error', step: 2, message: 'post-step failed' },
}))).toEqual([])
})
it('maps tool/call to an in_progress tool_call with kind other and parsed rawInput (generic fallback, no presenter)', () => {
const updates = updatesFor(evt('tool/call', { turn: 1, step: 1, callId: CallId('c1'), name: 'bash', arguments: '{"command":"ls"}' }))
expect(updates).toEqual([{

View File

@@ -49,6 +49,15 @@ describe('acp bridge — turn outcomes', () => {
.rejects.toThrow(/turn failed: provider boom/)
})
it('rejects an ordinary plugin turn failure through the same ACP boundary', async () => {
harness = await makeBridgeHarness({ storageDir, script: [textResponse('must not run')] })
harness.ctx.on('agent/pre-step', () => { throw new Error('plugin pre-step failed') })
const sessionId = await newSession(harness)
await expect(harness.client.prompt({ sessionId, prompt: [{ type: 'text', text: 'go' }] }))
.rejects.toThrow(/turn failed: plugin pre-step failed/)
})
it('streams a tool call as tool_call then tool_call_update', async () => {
harness = await makeBridgeHarness({
storageDir,

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