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- Split toggle aria-labels from their tooltips: the sidebar expand/collapse buttons announce "Open/Collapse right sidebar" so the two sidebars stay distinguishable, and the wrap toggle keeps an invariant "Line wrap" name beside aria-pressed while the tooltip keeps the action wording. - A hidden tab close also takes no pointer events, so a touch press on the chip's trailing edge activates the tab instead of closing it; e2e closes hover the chip first, the way a reader would. - Closing the last docked tab in fullscreen hands the mode back to push, so the next expand does not give the whole window to the start page. - The drop scrim mixes from bg-base, not bg-layer-2, which dark mode binds to a lighter bluish step than the column beneath it. - Document the menuitem probe in TabMenuExtras and the strip fade's known gap; match the open-in-app split-button comment to the 28px control row.
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.
License
Third-party dependencies and their licenses are disclosed in THIRD_PARTY_NOTICES.md.