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AI agents

DeepSeek Harness

A framework from DeepSeek for running AI agents, where every feature is a swappable plug-in.

Fast-risingResearch-backed

What it does

DeepSeek Harness is an "agent harness": the software that wraps around an AI model so it can work as an agent, an AI that carries out tasks rather than only answering questions.

It is built so that nearly everything is a plug-in, a separate piece you can add or swap out. It starts a web page on your own computer where you use it, and others can publish plug-ins for it.

Its makers describe it as a developer preview that changes quickly, warn that updates may break things, and ask people to read their safety notice before running it.

Who it's for

Developers and curious tinkerers who want to try or extend an open agent system.

Can I use it without coding?

With some setup. You need Node.js installed and one command in a terminal, which then opens a web page. New to this? Start here.

Can I run it?

API key
Not needed

Try it

  1. Read the project's safety notice first, as it is an early developer preview.
  2. Install Node.js on your computer.
  3. Start DeepSeek Harness with Node's package runner and its web page opens in your browser.

Using Claude Code, Cursor or another AI coding assistant? Paste the prompt and it will walk you through the setup.New to this?

Before you install

  • Only download from the official GitHub page. Copies with similar names exist for many popular projects.
  • License (MIT): Very permissive: free to use, change and share, including for business.
  • More on staying safe

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