Codewhale
Lets an AI agent in your terminal edit your code and run commands, with any model
by Codewhale
DeepSeek Harness
by DeepSeekAgentWrite code
Run an AI agent on your computer that edits project files and runs commands
About DeepSeek Harness
DeepSeek Harness is an open-source AI agent from DeepSeek that you run on your own computer through a local browser page. You give it tasks in a project folder and it reads files, edits them and runs commands.
For DevelopersTechnical makers
Made by DeepSeek
DeepSeek AI publishes DeepSeek Harness as an MIT-licensed project and calls it a developer preview where compatibility-breaking changes are expected.
- Stars
- ★ 275k
- License
- MIT
- Cost
- Usage-based
- Platforms
- Mac · Win · Linux
- Level
- Intermediate
Overview
DeepSeek Harness is DeepSeek's open-source agent, currently a developer preview. You start a local Web UI with one npx command, add a DeepSeek API key, pick a project folder and send tasks in plain words. The agent can read and edit files in that folder, run commands, delegate work to helpers and keep a plan, and the Web UI asks before actions that need approval under the active permission policy.
It comes from DeepSeek itself and is built so that almost every feature is a plugin you can add or swap.
Try these first
Start with the first one: it is a small task you can check easily.
- Summarize this repository and identify its main packages.First try · read-only
- Find where [setting] is read and list the files that use it.read-only
- Add a short section to the README that explains how to run [project name].edits files
- Run the tests in [folder] and explain any failures.runs commands
Example prompts written by Agent Flows Hub.
Features
From the creator's documentation.
| Feature | What it does | Runs |
|---|---|---|
| Local Web UI | Starts at 127.0.0.1:3080 and opens in your browser | Your computer |
| File access | Reads and edits files in the workspace folder you choose | Your computer |
| Commands | Runs commands and asks first when the permission policy requires it | Your computer |
| Models | Uses a DeepSeek API key; other providers and compatible endpoints can be added | Model provider API |
| Plans and helpers | Keeps a plan and delegates work to helper agents | Your computer |
Good to know
You want an agent that works on a project folder from a local browser page. Add a model key, choose the folder and ask it to explain, edit or test the project while you watch each step.
Limits
- It is a developer preview and its README warns that there will be compatibility-breaking changes.
- Its safety notice says the software can run model-generated commands and has not had a security audit, and advises a disposable virtual machine or container, least privileges and backups.
Notes by Agent Flows Hub (original project name: DeepSeek Harness (dsh)), written from the creator's documentation, not from running it ourselves. DeepSeek Harness README: run and developer preview · DeepSeek Harness Web UI guide · DeepSeek Harness safety notice
Stuck setting it up?
Tell us what happened. We take a look first; if it needs paid work, you get an estimate before anything starts.
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