> For the complete documentation index, see [llms.txt](https://docs.betaramps.com/documentation-beta-ramps/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.betaramps.com/documentation-beta-ramps/api-guide.md).

# API guide

- [Crypto and Fiat coverage](https://docs.betaramps.com/documentation-beta-ramps/api-guide/crypto-and-fiat-coverage.md): Beta's coverage includes domestic payment rails in Brazil and México, and also USD for international transactions.
- [Authentication](https://docs.betaramps.com/documentation-beta-ramps/api-guide/authentication.md): Beta uses the OAuth2 client-credentials grant type to authenticate access to secure resources.
- [Rate Limits](https://docs.betaramps.com/documentation-beta-ramps/api-guide/rate-limits.md): Rate Limits details for our Crypto APIs
- [Webhooks](https://docs.betaramps.com/documentation-beta-ramps/api-guide/webhooks.md): Receive notifications when an order or settlement changes the status.
- [Errors](https://docs.betaramps.com/documentation-beta-ramps/api-guide/errors.md): Type of errors and description