## Documentation Index

Fetch the complete documentation index at: [https://docs.subtrace.dev/docs/llms.txt](https://docs.subtrace.dev/docs/llms.txt)

Use this file to discover all available pages before exploring further.

Subtrace has experimental support for developers on macOS.

### Start backend

Start your backend server on port 8000:

```bash
npm run dev
```

### Start Subtrace

In a second terminal window, install Subtrace and start the proxy:

```bash
curl -fsSL https://subtrace.dev/install.sh | sh

# starts listening on 9000 and proxies requests to 8000
subtrace proxy 9000:8000
```

### Update frontend

Configure your frontend to send all backend requests to localhost:9000 instead:

```javascript
const API_URL = 'http://localhost:8000'
const API_URL = 'http://localhost:9000'

fetch(`${API_URL}/api/users`)
  .then(res => res.json())
  .then(data => setUsers(data))
```

### See requests

Open the `subt.link` URL in your browser to watch every request happening in realtime: