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https://github.com/deepseek-ai/deepseek-harness
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e04ca55374
The per-kind fixture guard claimed no-model scenarios need no session.jsonl, but the replay path requires one for ALL scenarios: runScenario() passes `fixtureFile: <dir>/session.jsonl` unconditionally and llm-replay's loadReplayScript() throws "fixture not found" when it is absent and no override replaces it. A no-model scenario ships a header-only session.jsonl that derives to an empty script. The guard + its comment now match that reality, so a future no-model scenario following them won't fail at subprocess startup.
Examples
Runnable demos (not workspaces) that showcase how the harness is wired.
echo-agent
A mock model + echo tool + stdio UI + JSONL persistence demo. Demonstrates:
- Loading plugins from a
cordis.ymlvia@cordisjs/plugin-loader+@cordisjs/plugin-include - Registering a mock
LlmAdapter(streaming scripted responses) - Registering a tool via
ctx.tools.register() - Persisting session events to JSONL via the
session/event+session/flushpattern - A minimal stdio UI consuming
agent/stream-chunkand session events
Run with: pnpm run demo:echo
When prompted, type "echo " to trigger a tool call round-trip.
coding-agent
The real thing: DeepSeek V4 + the bash tool suite + stdio chat + JSONL persistence, wired from cordis.yml. Where echo-agent proves the skeleton with mocks, this is a usable coding assistant.
Run with: pnpm run demo:coding (needs DEEPSEEK_API_KEY in the environment or a gitignored repo-root .env). See coding-agent/README.md for details.