Tianyi CuiandDudu-0223
ade7035fd8
A readable V3 child may have no own descriptor, an unknown descriptor version, or multiple descriptors. Those states do not provide a unique discovery fact, but they do not make the parent or the retained child history unreadable. Rejecting the entire parent prevented otherwise valid V3 Sessions from opening. Append a missing parent catalog row only for exactly one supported own child descriptor. Keep existing parent entries and every child record when no fact is available. Retain rejection of mismatched creation times, unambiguous mode/label conflicts, malformed known fields, unreadable membership and revision drift. Cover raw and compressed read/write publication, preserved source bytes, late descriptor availability, inherited descriptors and Preview packing. Document that unavailable discovery evidence can leave a child absent from its parent catalog and does not trigger automatic backfill after the V4 successor exists. Extracts the child-evidence behavior from 7ba7e174dd1 and the Preview regression from 9c85eb60bd25, preserving the original migration authors' work while keeping message representation and extension interpretation outside this commit. Co-authored-by: Dudu-0223 <[email protected]>
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.
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.