> ## Documentation Index
> Fetch the complete documentation index at: https://docs.rach.finance/llms.txt
> Use this file to discover all available pages before exploring further.

# CaaS API Reference

> Every Rach CaaS endpoint, with live "try it" and code samples.

This reference is generated from the Rach CaaS OpenAPI specification. CaaS is a separate
product with its own base URL and keys — see the [CaaS overview](/products/caas).

## Base URL

```
https://api.rach.finance/caas/api/v1/
```

## Authentication

Every B2B endpoint uses your CaaS API key in the `X-API-Key` header, prefixed
`rach_sk_live_` / `rach_sk_test_`.

<Note>
  CaaS keys are **separate** from your Payments keys and are not interchangeable. See
  [Get your API keys](/guides/api-keys).
</Note>