Yichen Jiang
0f95351405
The probe's child was a script string that wrote its report to stdout, and
the parent parsed the whole stream as one JSON value: a plugin that merely
printed a line at import could not be probed, and a package that kept a
timer alive after import ran until the timeout. The parent asserted the
parsed value as the report, and the cache read checked only `format`, so a
file holding nothing but `{ "format": 2 }` came back as a complete record.
The child is now its own module, `probe-child.ts`, run through tsx under a
source launch and bundled as `lib/probe-child.js`, and it sends one report
over an IPC channel; stdout is not read at all, and the child is killed as
soon as the report arrived. `parseChildReport` and `parseProbeRecord`
validate the report and the cached record field by field, so an
unrecognized report is a rejection and an unrecognized record is probed
again. `PluginProbe.ok` now states what it is: the main export imported and
cordis is not a second copy; `kind` and `addable[].ok` decide what can be
enabled or added.
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.