Choose a test folder
Use a folder without secrets or production code for your first run.
● Unofficial guide · Developer preview
Run DeepSeek Harness locally.
Start with the official Web UI, then pick community plugins when you know what you need.
Official command
npx @deepseek-ai/dsh web⚠ Copy this command exactly. Packages with similar names are not DeepSeek Harness.
Before you start
DeepSeek Harness is still in developer preview. Start small, expect changes, and add plugins only when you understand what they do.
This is an independent guide, not a DeepSeek service. It does not host Harness or ask for your account or API key.
Your first local session
Run the official command
It opens the Web UI on your machine. Leave the terminal running while you use it.
Try a simple task
Get comfortable with the local workspace before you connect more tools or services.
Add plugins later
Plugins are third-party code. Read the source, permissions, and version notes before you install one.
Should you try it?
Answer three quick questions to see whether it matches how you work today.
Worth trying
You want a local workspace and are comfortable with preview software. Run the official command first; plugins can wait.
Pick the setup that suits you
Web UI
A local browser interface. It is the easiest place to begin.
Terminal
A keyboard-first option if you prefer to work from a shell.
Workspace tools
Use them with a local folder only after you know what they can read or change.
Before you connect anything
Cost
Harness runs locally, but your model provider and connected services may charge separately.
Privacy
A local interface does not mean every request stays on your machine. Check your provider, tools, and plugins.
Safety
Use plugins in a test workspace first. Check permissions and never paste credentials into prompts you do not trust.
Looking for more tools?
Browse community plugins by use case. Each listing includes the publisher link, a review label, and the risks to check before installing.
Good to know
Is this an official DeepSeek site?
No. This is an independent guide. The command and repository links take you directly to DeepSeek.
Will every plugin work?
Not necessarily. Check the listing label, the risk tags, and the publisher documentation before you install it.
Do I need an API key?
Set up any provider credentials in your own local environment. This guide never asks for or stores them.