Yichen Jiang
b239db6aeb
The Windows coverage lane failed on four cases that assume `http_proxy` and `HTTP_PROXY` are separate variables. They are one variable there: `process.env` is case-insensitive, and the launch snapshot folds names for the same reason. A scenario built on "the user set only the lowercase name" cannot exist. Two of them assert a contract rather than a spelling, so they now hold either way: what reaches a child for a scheme the user named is the user's own value and never the derived one, and a nested install carries the active policy's value rather than the outer install's published one. Both read over the pair of names instead of one. The other two are about the case distinction itself. Neither can hold on a folded environment, so each asserts what that platform does instead of skipping: the later entry wins where a preference cannot be expressed, and a diagnostic names the spelling resolution asked for. Both were verified against the folding arm rather than reasoned about.
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.