Tianyi Cui
dbb150ff0e
An aborted read can stay pending forever: undici drops the error when the abort lands on an in-flight response-body read (observed on the coverage lane's Node v24.13.0), and the stalled body of `llm-retry/tests/transport-recovery.spec.ts` then never settles. The idle watchdog delegated termination to the iterator observing its signal, so the request outlived its own deadline and the agent stayed `running` until Vitest's 90s budget; awaiting the abandoned request generator's `return()` queued behind that demand and would have re-hung the settled outcome. `idleWatchdog.next` now races its demand against its own deadline and rejects with the watchdog's TimeoutReason, so the deadline — not the transport — decides when an outstanding demand ends. Both adapters that consume the watchdog stop awaiting the abandoned generator's drain; the abort they already issue owns socket and SDK teardown. Evidence: instrumented stress harness at ~1s idle on Node v24.13.0 hung 4/160 iterations before this change (each with the abort delivered at ~1002ms and the underlying read never settling) and 0/160 after; Node v24.19.0 never hung. The new case in transport-recovery.spec.ts pins the behavior deterministically: it fails (times out) with the watchdog change alone and with no product change at all.
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.
pnpm run dev:web builds, serves, and rebuilds client bundles on source edits in one terminal, and make help lists the matching Make targets for Web and Desktop; the guide's application commands section owns the full table.
For agents, follow AGENTS.md.
Citation
@misc{deepseek-harness2026,
title={DeepSeek Harness: Everything is a Plugin},
author={DeepSeek-AI},
year={2026},
publisher={GitHub},
howpublished={\url{https://github.com/deepseek-ai/deepseek-harness}},
}
License
Third-party dependencies and their licenses are disclosed in THIRD_PARTY_NOTICES.md.