`package-target.ts` imported `macos-notarization-proxy.ts`, whose top-level import of `@deepseek-ai/node-addon-system/flock` resolves through the package `exports` to the unbuilt `lib/flock.js` on a clean checkout. The step that emits that file runs inside the same packaging script, so `check:package`, `package:*`, and the `restore:mac-proxy` recovery command all failed with `ERR_MODULE_NOT_FOUND` before reaching it; running `pnpm run typecheck` first left the host addon binary missing instead, which failed at lock time. The proxy lock now loads the entry at first use through `flock-entry.ts`. When the import is unresolvable or the host platform package lacks a binary listed in its `prebuilds.json`, the loader runs `pnpm run build:native-system` and `pnpm --dir native/system run build:ts` before importing again; other errors and build failures propagate, and a failed load is retried by the next call. `check:package` no longer touches the entry at all. Tests cover the loader steps and load the proxy module from a directory where the addon package cannot be resolved. The Desktop README records the behavior in both languages. (cherry picked from commit 2d74cf50310d4efbbccbbe79a105fcc3a468b19d)
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.
pnpm run dev:web builds, serves, and rebuilds client bundles on source edits in one terminal, and make help lists the matching Make targets for Web and Desktop; the guide's application commands section owns the full table.
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.