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

# API reference

### Authentication

This API relies on provisioned API keys for authentication and access. In order to obtain a key, please contact us.

[Read more](/cryptosat/api-documentation/authentication.md)

### Public randomness

Public randomness API.

[Read more](/cryptosat/api-documentation/public-randomness-sapi/api-reference/public-randomness.md)