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* fix(plugins): deny incompatible bundles and clarify compatibility refusals A bundle package is not a plugin row, so startup admission never read its own DSH peers: a bundle installed outside DSH or before a DSH upgrade still applied its patch layer. loadProfileDirectory now skips such a bundle like an unreadable one unless the profile exempts that exact pair. A post-install refusal in a profile without a lockfile reinstalls from the restored manifest instead of failing a frozen install and leaving the rejected packages in node_modules. Compatibility warnings now name the `dsh plugin allow-version` command for CLI-managed profiles, startup denials name the row id instead of a resolved module URL, and the CLI no longer reports "pnpm failed" when pnpm never ran. * feat(plugins): report incompatible versions as typed refusals Compatibility checks now yield the refused packages as data instead of a profile-specific sentence. runProfilePnpm returns them as PackageResult.incompatible, and the plugin manager refuses with the incompatible-version code carrying the same records. Each surface renders them: the CLI prints the exact allow-version command for its profile, the Web plugin manager words them through its locale dictionary, and app-boot keeps one neutral English diagnostic for logs and startup stderr. * fix(plugin-manager): drop the agent exemption hint from the incompatibility reason
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.