Yichen Jiang
12957a106e
The workflow tool gains run_in_background (enableRunInBackground config,
default on): the run registers on ctx.jobs as an owned 'workflow' record
job and the call returns { kind: 'background', jobId, runId } immediately.
The run belongs to the job — job_kill, the list's stop control, and owner
teardown cancel it; no tool-step signal is bridged. Settlement maps the
stop reason onto the job outcome, with a completed run's rendered return
value riding output to the completion notice and job_output. A record
mirror streams workflow/phase, workflow/log, and member lifecycle lines
into the job record, replacing the removed activity mirror; the output
schema becomes a kind-discriminated union and 'workflow' joins JobKindMap.
Snapshot expected outputs are refreshed for the schema, prompt, and PTC
stub changes (the keyless refresh also migrates fixtures to the current
session write format: range sourceEventSeqs and reasoning-delta chunks).
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.