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The two bridge plugins that run a user's existing Claude Code / Codex hook
config on the harness's typed interception seams, built on the shared
dsh-hook-protocol library. A bridge is a faithfulness adapter, not a power
tool: anything it does a native cordis plugin does more powerfully — the
bridge exists only to run UNMODIFIED external hooks.
- dsh-hooks-claude: CC dialect. Seven hook points (SessionStart,
UserPromptSubmit, PreToolUse, PostToolUse, Stop, SubagentStart,
SubagentStop), CC per-event stdin payloads, env + ${CLAUDE_PLUGIN_ROOT}/
${CLAUDE_PROJECT_DIR} substitution, literal-or-regex matcher.
- dsh-hooks-codex: Codex dialect — a deliberate subset. Five hook points,
always-regex matcher, snake_case payloads (turn_id/model, no trailing
newline), no env/substitution, block-only decisions.
Both map the neutral merged outcome onto the seam's typed Decision and stamp
an explicit {kind:'plugin'} source on injected context (so it is never
mislabeled as a user prompt). Config parse-failure is contained; only command
hooks run. updatedInput is logged+warned (input rewrite deferred); the Stop
loop-guard is deferred (TODO).
Tests: per-file 100% — config-parse unit branches + per-seam mappings
end-to-end through the REAL loop + REAL bash + REAL shell scripts (scripted
mock model only) + a real-Loader export-shape guard. A keyless ACP snapshot
scenario (hook-prompt-block) proves a UserPromptSubmit hook blocks a prompt
end-to-end (rejected turn -> ACP cancelled, hook/* events in the log); a
with-key e2e (hooks.e2e.ts) proves a PreToolUse hook blocks real bash
(verified on disk). The snapshot normalizer now scrubs hook/result.durationMs.
RFC: docs/rfc/implemented/feature/2026-06-30-hook-bridges.md
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AGENTS.md — Examples
Runnable demos that show how the harness is wired. Examples are NOT workspaces — each examples/*/package.json is a private, dependency-free stub with no build. They are booted as unbuilt tsx subprocesses via the cordis Loader reading a cordis.yml; the @deepseek-ai/dsh-* plugin names in those YAML files resolve through the root tsconfig.json paths map, not through node_modules.
Because examples are not under the packages/*/src coverage gate, an example that grows real, reusable logic should extract it into a packages/ package (where it gets the per-file 100% gate and a README). Keep only example-specific glue here: the cordis.yml wiring, demo-only mocks/teaching artifacts, and the e2e/snapshot scenarios. There is no start.ts — the boot glue (Loader tail, .env load, snapshot-mode selection, stdin-dispose lifecycle) lives in each app package's bin (@deepseek-ai/dsh-stdio-agent, @deepseek-ai/dsh-acp-agent), which the demo:* scripts invoke against the leaf cordis.yml.
Every example ships e2e smokes (keyless + with-key)
Each example must have both kinds of end-to-end smoke, because they catch different failures:
- Keyless smoke — boot the example through its real
cordis.ymlvia the Loader (no API key), drive it, and assert the rendered output and a clean exit. This is the guard a hand-mounted unit test structurally cannot be: it exercises the REAL load path (unwrapExports,inject, the whole plugin tree), so a broken plugin export shape — e.g. a strayexport defaultthat collapses a namespace plugin and dropsinject— fails here even when unit tests stay green (see docs/postmortem/0001). It runs in the default e2e gate (CI has no secrets). - With-key smoke — send a real prompt against the live model and verify the WORLD (a file on disk, a non-empty assistant turn), not the agent's self-report. This proves the actual product works, which a mock/keyless run structurally cannot. Key-gated: it self-skips without
DEEPSEEK_API_KEY(see the with-key policy — inference is cheap here, so write many).
Exception — keyless-by-nature examples. An example whose model is itself a mock/deterministic stand-in (no real provider) has no meaningful with-key smoke; the keyless smoke is the complete requirement. State the exception inline in the test.
A keyless smoke that spawns the example from a temp cwd must set TSX_TSCONFIG_PATH to the repo-root tsconfig — the unbuilt paths map is found by searching UP from cwd, so a temp cwd outside the repo would otherwise fall back to stale built lib/. Pass --expose-internals when the example's cordis.yml loads the HMR plugin (mirror the demo:* script).
Current state
| Example | Keyless smoke | With-key smoke |
|---|---|---|
echo-agent |
tests/echo.e2e.ts — boots the real cordis.yml, drives the echo tool round-trip and the direct canned reply |
N/A — keyless by nature (the mock-echo model has no real provider) |
coding-agent |
tests/keyless-smoke.e2e.ts — boots the full real tree (dummy key, no prompt → no model call), asserts banner + clean exit |
tests/{full-loop,coding-task,resume,todo-write}.e2e.ts — real model + real bash + real todo_write, world-verified |
acp-agent |
pnpm run test:snapshot — boots the real ACP subprocess and replays a recorded session keyless (incl. hook-prompt-block, where a UserPromptSubmit hook blocks the prompt); tests/acp.e2e.ts also asserts stdout purity without a key |
tests/acp.e2e.ts — real ACP prompt, verifies a file the agent wrote; tests/hooks.e2e.ts — a real PreToolUse hook blocks bash, verifies the file is NOT written |
See the root AGENTS.md for repo-wide conventions and docs/architecture.md for the design.