Tianyi CuiandLegGasai
766e6f9176
The merged dependency repair in #4589 uses a recorded Launchpad build, but #4591 also requires a regression guard against restoring the live Ubuntu package pool. Those pool URLs disappear when versions are superseded, even when the content digest is pinned. Adapt LegGasai's URL guard from closed PR #4590 to the build-specific endpoint that landed in #4589. Check the endpoint structure without copying the current build number, version, or checksum into the test, and reject Ubuntu pool downloads anywhere in the script so adding a pool fallback cannot bypass the guard. Negative controls restore the original archive URL and inject security and ports pool fallback URLs; each fails the new guard. The original script is restored byte-for-byte before all 44 workflow tests pass. This adds only a static regression test, with no network calls or changes to the download script or CI execution behavior. Co-authored-by: LegGasai <[email protected]>
DeepSeek Harness
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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.
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.