Tianyi Cui
9dcc8fa985
Integrate master 78ae4fc2d4d8ecaebb4b674028f781a358b92cc9 after the four independent review fixes. Keep this base update separate from those fixes and from subsequent review changes so the integration is independently reviewable and the observed-master checkpoint remains preserved. Retain activation-owned execution, caller-independent local discovery, and unconditional parent final-answer delivery. Preserve master's preset scoped scheduling tools and all delegated-child schedule deny rules. Move the new scheduling regression from the removed driver package into the surviving subagent package and run it through a real Spawn activation. Preserve master's removal of runtime invariant plugins, dependencies, exports, and test mounts. Keep context disposal before fixture directory cleanup. Combine Python workflow ordering with activation/catalog events without inventing unsupported source-plane import paths. Keep all frozen Agent Note archives byte-for-byte identical to master; do not accept Git's automatic edits to renamed archived notes. Retain current lifecycle and delivery facts in active documentation, repair its links, and regenerate catalogs/persistence schemas from merged source. All 62 master persistence roots remain; only subagent/catalog gains the PR's external membership extension. Keep master's third-party lock graph and update only workspace dependency changes. Validation before this checkpoint: 683 focused tests passed, seven Windows-only cases skipped; 2,772 archived artifacts verified. Generated catalog and active-pair checks passed. Fresh artifact build and remaining build-dependent documentation checks continue before publication.
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.