Yichen Jiang
cf4a27c471
Review found two live defects in the compat surface. A valueless key (`supportsDeveloperRole:`) survives schemastery as null, and resolution carried it forward as a configured value. It landed on `Model.compat` as null, which replaced the installed catalog entry's value and left pi-ai's `??` reaching for its baseURL detection — the catalog layer skipped entirely, and the switch written but not applied. The vocabulary check now refuses it where it is written, matching the `reasoningEfforts` precedent in the same file. The gates were keyed by protocol name, but pi-ai keys compat by type: `openai-responses`, `azure-openai-responses`, and `openai-codex-responses` share one `OpenAIResponsesCompat`, so two shipped catalog routes were refused the fields their own models declare. Gates now group by compat type, `bedrock-converse-stream` gains its own, and the protocol set is derived from `Model.compat`'s conditional so a release that gives a further protocol a compat type fails the gate list by name. Field types are derived from upstream rather than restated, with a proof pinning the profile assignable to the upstream types, so a widened value union cannot silently narrow what configuration accepts. The `undefined` filter stays removed: `exactOptionalPropertyTypes` keeps a typed caller from writing one, and schemastery never materializes one, so it was validation for a value the static interface already excludes. Refs #2646
DeepSeek Harness
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DeepSeek Harness (dsh) is an open-source agent harness developed by DeepSeek AI.
It uses an architecture where everything is a plugin, and is powered by Cordis, whose design is described in A Programming Paradigm for Spatiotemporal Composability.
Developer preview
DeepSeek Harness is currently in developer preview and is iterating rapidly. THERE WILL BE COMPATIBILITY-BREAKING CHANGES.
Run
Run from npm
Install Node.js, then run:
npx @deepseek-ai/dsh web
The command starts the Web UI, served at http://127.0.0.1:3080 by default. 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
Community and support
- Feel free to 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.