Request preparation now precedes durable user admission and finalization is synchronous. The title service intentionally defers fallback publication, so titles naturally follow request/header and request/context instead of landing in an incidental await gap. Refresh the actual headless, SDK, ACP and CLI recordings rather than adding a synthetic yield or changing title ownership to preserve obsolete ordering. Keep every model response, user input, tool effect and identity relationship; review reordered title/header facts and remapped references. Current master also removes the base editor contribution, so shared schema pins follow the actual shipped profile. Historical generations remain unchanged: their test-only comparison orders title facts independently while preserving title payloads and references. Normalize only generated stream clocks in refreshed fixtures. Validation: owning refresh runs passed current scenarios, CLI expected tier28/28, Web minimal/replay11/11 and targeted SDK in-history1/1. Read-only full built corpus passed127 cases with2 unavailable-PowerShell skips; its sole failure is the separately repaired historical invalid-citation negative control on the lower PR. Six retained historical comparison cases pass. No production behavior is changed in this commit.
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.