> For the complete documentation index, see [llms.txt](https://captic-2.gitbook.io/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://captic-2.gitbook.io/docs/your-captic-system/product-api-reference.md).

# Product API Reference

Where to find the full Product API documentation.

The Product API documentation is served by every Captic device. It always matches the software version running on that device, and lets you try requests directly from your browser.

Open it on a computer on the same network as the device:

```
http://[serial-number].local:3000/api/docs
```

The API itself runs on port 5004: `http://[device-ip]:5004`. For a first example, see [REST](/docs/overview/hands-on/integrating-your-robot/rest.md).

{% hint style="warning" %}
The Product API gives full control over the system. Test changes in Human Mode before using them in production.
{% endhint %}