Turtle
a3480857dd
* feat(experimental): ship every experimental capability as an optional bundle dsh-base mounts the registration-only browser-use and computer-use services; the Playwright MCP, Chrome DevTools MCP, native and MCP Cua Driver providers, Auto review, and the Inspector become one-row bundles listed in OPTIONAL_BUNDLES with an icon and locale display metadata. verify-default-product-isolation requires both for every optional bundle. Python PTC and Stagehand stay explicit compositions. * feat(experimental): keep optional bundles inside the install closure Drop the Playwright MCP, Chrome DevTools MCP, and native Cua Driver bundles: each is a runtime dependency of every install and would add about 85 MB of provider runtimes whether or not enabled. dsh-browser-use leaves dsh-base with them. The three packages keep their locale display metadata for component rows. * feat(experimental): drop the Cua Driver MCP bundle and leave dsh-base untouched * test(web): refresh Official-group goldens for the four optional bundles * fix(plugins): use an uninstalled bundle as the install example and pin optional-bundle metadata The install guide's example is now @deepseek-ai/dsh-subagent-codex, a published bundle no shipped profile carries, since Auto review is an installed optional bundle. The optional-bundle spec guards its corpus and pins each bundle's title, description, and icon in both languages; the Inspector's Loader test mounts its real bundle patch, its Client names the reload a hot-enabled page needs, and its description states the loopback DevTools endpoint's reach. * test(web): refresh GitHub install recovery placeholder snapshot
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.