Two review findings on the CPython backend: - Disposal could return while a same-group descendant that ignores SIGTERM but releases the inherited pipes was still alive: the leader's close fired and the previous fix relied on an unref'd SIGKILL timer that a short-lived host never fires, reparenting the survivor to init. settle() now withholds the run's finished promise on a ref'd process-group poll until the SIGKILL has emptied the group (bounded by graceMs + margin, zero-cost when already empty), so teardown's "await each child's exit" holds. - A binding called from a model worker thread via asyncio.run created its reply Future on that thread's loop, but _pump_replies completed it directly from the main loop; asyncio.Future is not thread-safe across loops, so the call hung to the wall clock. Replies now complete via the owning loop's call_soon_threadsafe, and a lock serializes the id claim/write/advance. Tests: the same-group reap case now asserts a heartbeat file stops (robust whether the killed descendant is reaped or a zombie, so it holds where PID 1 does not wait() orphans); a cross-loop case runs a binding from a worker thread and asserts the reply round-trips instead of timing out. Agent Note expanded to all six fixes with rejected alternatives; zh pair re-recorded. |
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| AGENTS.md | ||
| BENCHMARK.md | ||
| BRAND_GUIDELINES.i18n.yaml | ||
| BRAND_GUIDELINES.md | ||
| BRAND_GUIDELINES.zh.md | ||
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| SAFETY.i18n.yaml | ||
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| THIRD_PARTY_NOTICES.md | ||
| tsconfig.base.client.json | ||
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| vitest.config.ts | ||
| vitest.e2e.config.ts | ||
| vitest.expected.config.ts | ||
| vitest.shared.ts | ||
| vitest.snapshot.config.ts | ||
| vitest.web-stress.config.ts | ||
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| vitest.web.perf.config.ts | ||
DeepSeek Harness
English | 中文
DeepSeek Harness (dsh) is an open-source agent harness developed by DeepSeek AI.
It is built on an everything-is-a-plugin architecture and powered by Cordis, whose design is described in A Programming Paradigm for Spatiotemporal Composability.
Documentation: https://deepseek-harness.github.io/deepseek-harness/
Developer preview
DeepSeek Harness is in developer preview and iterating rapidly. THERE WILL BE COMPATIBILITY-BREAKING CHANGES.
Review the safety notice before running the project.
Run
Run from npm
Install Node.js, then run:
npx @deepseek-ai/dsh web
The command starts the Web UI at http://127.0.0.1:3080 by default and opens it in the default browser for a local launch. An SSH launch only prints the host URL because the SSH client or editor owns the local forwarded address. Pass --no-open to run the server without opening a browser. See Web UI guide.
Run from source
To run from a repository checkout:
git clone https://github.com/deepseek-ai/deepseek-harness.git
cd deepseek-harness
pnpm install
pnpm run build
pnpm dsh web
pnpm run build prepares the repository artifacts. pnpm dsh web uses those built artifacts without rebuilding.
Community and support
- Submit feedback or bug reports through GitHub Discussions.
- Add the
dsh-plugintopic to your plugin repository for discoverability. - Join DeepSeek Harness Discord community.
Contributing
See CONTRIBUTING.md.
Development
Start with the development guide and architecture documentation.
For agents, follow AGENTS.md.
License
Third-party dependencies and their licenses are disclosed in THIRD_PARTY_NOTICES.md.