Chinesezjc
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Review findings on the CPython backend: an explicit pythonBin path bypassed the load-time checks (missing/non-executable/directory paths surfaced only as a run-time worker-exit); a throwing binding member accessor escaped the fd-3 data callback and terminated the host; the reply drain waited on 'drain' alone, so a pipe destroyed under the wait hung forever; and two staging-leak assertions diffed a global tmpdir that parallel workers can perturb. resolvePythonBin now applies the same accessSync(X_OK) + isFile check to explicit paths (resolved against the host CWD), and the load error message distinguishes 'is not an executable regular file' from 'does not resolve on PATH'. validateBindings snapshots callables into a plain record during run()'s synchronous validation, turning an accessor throw into the seam-misuse rejection and fixing the key set the boot frame and dispatch share. The reply drain waits on drain/close/error together and short-circuits on proto.destroyed. The staging-leak assertions check the exact paths this test file staged (recorded by the mocked mkdtempSync) instead of a tmpdir diff. docs(code-runtime-python): add the alternatives section to the hardening note docs(config-catalog): refresh the code-runtime-python Config source line test(code-runtime-python): cover the async spawn-error worker-exit path
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.