Tianyi Cui
7b182e95e1
sessionFixtures already selects the highest generation independently for each parent or child role. Filtering its output to files[0] silently exempted every child from prompt and schema fixed points and prompt-before-request ordering. Merge those assertions into the per-role loop and expose the actual checker for focused negative controls without mocking Vitest registration. The three selected-child controls reject missing system/message, raw prompt text, and raw tool schemas; each resolved incorrectly with the parent-only filter. A positive mixed-generation case proves retained predecessors remain unselected. Correct the two versionless record-suite child fixtures that the restored enforcement exposes, including the retired-child copy used by recording tests. No released historical generation or broad recording is rewritten. Evidence: pnpm exec vitest run packages/test-support/session-snapshot/tests/storage-policy.spec.ts packages/test-support/session-snapshot/tests/suite.spec.ts --coverage --coverage.include=packages/test-support/session-snapshot/src/suite.ts: 143 pass, one intentional record-mode skip, suite.ts 100% statements/branches/functions/lines. Update and re-record the session-snapshot README EN/ZH pair.
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.