Yichen Jiang
7d06fcdc05
The add card's panels are now derived from the shown mode and the modes visited since it opened, and each renders only while its mode is still offered, so a refresh that changes which modes are offered — every configurable row gone, the pi-ai namespace unmounted, a route freed after the catalog was exhausted — can neither leave the card without a panel nor keep a form whose write the Host would refuse. The catalog draft resolves to the chosen row while its namespace can take the write, else to the first addable row; closing either panel forgets it, so a later refresh cannot open a row editor unasked. Both cards report a write or an endpoint interrogation in flight, and the switch and the catalog select lock while one is, since a switch underneath it would orphan the answer or the picker it opens. The SegmentedControl takes the owner's id and pairs each tab with its panel through `aria-controls` and `aria-labelledby`; a card offering one mode carries that mode as its title instead of an orphan tabpanel, and a locked segment names its reason as hover text. `fullWidth` goes: no consumer asked for it.
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.
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.