Yichen Jiang
c2fb2bd4e8
# Conflicts: # .agents/notes/implemented/feature/2026-08-08-web-background-job-display.i18n.yaml # docs/config-catalog.i18n.yaml # docs/event-producer-consumer.i18n.yaml # docs/module-graph.i18n.yaml # docs/subsystems/jobs.i18n.yaml # docs/subsystems/shell.i18n.yaml # docs/subsystems/shell.md # docs/subsystems/shell.zh.md # docs/tool-catalog.i18n.yaml # packages/api/session-controller/README.i18n.yaml # packages/context/tmux-context/tests/tmux-context.spec.ts # packages/e2b/e2b/tests/fixtures/composition/bin.ts # packages/extensions/tool-cordis/src/api-catalog.ts # packages/shell/bash-local/README.i18n.yaml # packages/shell/bash-local/README.md # packages/shell/bash-local/README.zh.md # packages/shell/bash-local/src/index.ts # packages/shell/bash-local/tests/executor.spec.ts # packages/shell/bash-sandbox/README.i18n.yaml # packages/shell/bash-sandbox/README.md # packages/shell/bash-sandbox/README.zh.md # packages/shell/bash-sandbox/src/index.ts # packages/shell/bash-sandbox/tests/bwrap.e2e.ts # packages/shell/bash-sandbox/tests/landlock.e2e.ts # packages/shell/bash-sandbox/tests/partial-landlock.spec.ts # packages/shell/bash-sandbox/tests/sandbox.spec.ts # packages/shell/bash-sandbox/tests/seatbelt.e2e.ts # packages/shell/pwsh-local/README.i18n.yaml # packages/shell/pwsh-local/README.md # packages/shell/pwsh-local/README.zh.md # packages/shell/pwsh-local/src/index.ts # packages/shell/pwsh-local/tests/executor.spec.ts # packages/shell/pwsh-sandbox/README.i18n.yaml # packages/shell/pwsh-sandbox/README.md # packages/shell/pwsh-sandbox/README.zh.md # packages/shell/pwsh-sandbox/src/index.ts # packages/shell/pwsh-sandbox/tests/sandbox.spec.ts # packages/shell/shell/README.i18n.yaml # packages/shell/shell/README.md # packages/shell/shell/README.zh.md # packages/shell/shell/src/index.ts # packages/shell/shell/tests/service.spec.ts # packages/shell/tool-bash/README.i18n.yaml # packages/shell/tool-bash/src/index.ts # packages/shell/tool-bash/tests/tools.spec.ts # packages/shell/tool-pwsh/README.i18n.yaml # packages/shell/tool-pwsh/src/index.ts # packages/shell/tool-pwsh/tests/background.spec.ts # packages/shell/tool-pwsh/tests/tools.spec.ts # packages/workflow/tool-workflow/README.i18n.yaml # packages/workflow/tool-workflow/package.json # packages/workflow/tool-workflow/tests/tool-workflow.spec.ts # snapshots/session/ptc-python-turn/system-prompt.expected.md
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.