deepseek-harness

DeepSeek Harness is a TypeScript developer tool in developer preview. Its README builds everything around plugins, powered by the Cordis framework, with a Web UI served at port 3080.

DeepSeek Harness comes with a short pitch: everything is a plugin. The harness runs on Cordis, and the README points to a separate writeup, A Programming Paradigm for Spatiotemporal Composability, for the thinking behind Cordis's design. The text stops there. There are no code samples, no configuration tables, no API listing. The plugin claim and that one pointer are the whole technical story the README tells.

The project describes itself as a developer preview that is iterating rapidly, and it warns that compatibility breaking changes are coming. The warning is written in capital letters, which reads less like a disclaimer and more like a heads-up: do not build a production pipeline on this yet. The repository was created recently, and its star count is already very high. The README does not explain that gap, so take the numbers as they are.

Installation, as far as the README documents it, is a command from npm. That command starts the Web UI, which listens at 127.0.0.1:3080 by default. For anything past that, the README points to a Web UI guide. It does not walk through environment variables, package setup, or configuration, so the documented surface is genuinely small.

Feedback and bug reports go through GitHub Discussions. Plugin authors can add the dsh-plugin topic to their repositories so other people can find them. There is also a Discord community. Those three channels are all the README mentions, and none of them come with usage numbers attached.

The project makes no promises beyond a preview under rapid iteration, with breaking changes on the way. That warning in caps is the honest part of the whole file.

• Source 1 · Project repository
• Source 2 · README