sjw1231
8f798da97d
Drop the preflight sandbox fence. It derived writable roots in the local process, so under the SSH provider it threw on remote additionalWritableRoots and compared remote targets against local temp roots; write and edit never fenced in the tool layer. The provider now refuses a denied operation at commit, and a commit whose first operation failed without any change rejects like a preflight refusal so the sandbox escalation path keeps its error code. Classify FS_ABORTED as unknown: a cancelled remote request rejects while the provider may still be writing, so no stat comparison can settle it. Document that a cancelled call receives the registry's abort result like every tool. Store no diff for creations, matching write, and bound the move source basis by diffBasisMaxBytes so persisted metadata never holds whole files; FsMoveOutcome.sourceBefore becomes nullable. Omit deletions from the call preview and from result diffs without a basis instead of rendering them as empty creations, and count distinct files in the preview title. Reject a NUL byte beyond the read sampling window in preflight, name targets by display path in atomic-write diagnostics, align the apply_patch guidance with the edit wording and mention delete and move, read the stopped flag and applied diffs tool-agnostically in the client models, skip the permission-bit snapshot under root, list fs/delete-intent in the tool catalog, and refresh the fs-patch description, group README, fs-sandbox summary, and ui-tool README.
DeepSeek Harness
English | 中文
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.