Yichen Jiang
732a7361f5
Some credentials cannot be configured, only obtained: getting one means a conversation — open this page, paste that code, pick an account. The new seam owns that conversation and the one-attempt-per-key lifecycle, and never the protocol, so a second authorization protocol arrives as another flow rather than as another seam. A flow is registered under the CredentialKey it writes, which is also how the seam knows which plugin answers for the format inside that record. The flow owns the write: run() resolving means the record is already committed through ctx.credentials, and the seam confirms it. That keeps a library persisting through its own store adapter the single writer instead of being copied back out and written twice. The interaction travels with the request rather than a registry, because whoever starts an authorization is the one who can talk to the human about it. A request already withdrawn never claims the key and never starts the flow — relying on each flow to check its signal before the first await would let one that does not hang holding the key.
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 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
- 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.