# Install

Run ZeroWidth on your own computer or on one server inside your network.

You need Node 24 or later. Install ZeroWidth once, and the `zerowidth` command is ready everywhere. `0w` is a short name for the same command.

## On your computer

```Terminal
npm i -g @zerowidth/cli
zerowidth init --db team.db
zerowidth doctor
zerowidth serve --db team.db
```

`serve` starts the console, and MCP at `/mcp`, at `http://127.0.0.1:4380`. Only this computer can reach ZeroWidth. [Try ZeroWidth in five minutes](https://zerowidth.ai/docs/get-started/try-zerowidth)

## For your team

Serve wider, and everyone on your network reads the same record.

```Terminal
zerowidth serve --db team.db --host 0.0.0.0
```

ZeroWidth makes a token on first start. Open the console once at `/?token=<token>`, and agents send the token with each request.

> Treat the token as a shared team password, and serve only inside your network.

## Check your setup

`doctor` checks everything an install needs, one line each, with what to do about anything wrong. Add `--online` to also check your OpenRouter key, which costs nothing.

```Terminal
zerowidth doctor --online
```