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https://github.com/deepseek-ai/deepseek-harness
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c94f1563f5
Adds the first cut of snapshot scenarios, each asserting a normalized stdout
transcript golden and (for model turns) a re-persisted session-log golden:
- text-turn, tool-call-turn, multi-turn: RECORDED against the real API — the
committed session.jsonl is a genuine harvested log; replay derives the model
script from it and reproduces deterministically with no key. tool-call-turn
exercises the real bash executor (echo SNAPSHOT_OK → tool/call + tool/result
+ a post-tool answer step).
- error-finish, cancel: AUTHORED via a replay.override.json sidecar (the live
API can't be coaxed into a deterministic 401 or mid-stream cancel). error-
finish replays a {kind:throw} 401 → the bridge answers the prompt with a
JSON-RPC error and the log records turn/end{kind:error}; cancel replays a
{kind:hang} → stopReason:cancelled.
Two input-DSL ops support these: promptExpectError (awaits the prompt, asserts
it rejects — the editor's view of a failed turn — and swallows it) and
promptAndCancel (dispatches the prompt unawaited, waits until the client
OBSERVES the streamed agent_message_chunk, then cancels — pinning frame order
so the cancel transcript is deterministic; fixes a flake Codex caught where the
late chunk and the cancelled response could interleave either way).
Scenarios carry a `recorded` flag so test:snapshot:record only re-runs the
live-API ones. reasoning/max-tokens scenarios are deferred (hard to force
deterministically from the live model). Per docs/rfc/implemented/2026-06-19.
DeepSeek Harness
Monorepo for the DeepSeek Harness group.
Projects
- DeepSeek Code — DeepSeek's coding agent product.
Development
This monorepo is built on the Cordis framework (vendored as source under vendor/), microkernel-style: everything is a plugin.
pnpm install
pnpm run test # vitest
pnpm run demo:echo # runnable echo-agent example (no API key needed)
pnpm run demo:coding # the real DeepSeek coding agent (needs DEEPSEEK_API_KEY)
For humans, start with the development guide for local setup, hooks, environment variables, and quality gates, then read the architecture design before package work. Local context lives in packages/ and vendor/.
For agents, follow AGENTS.md.