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

# API configuration

Before you can start using the CryptoProcessing API, you need to generate an API key and register a callback URL for receiving webhook notifications. Optionally, you can restrict API access to trusted IP addresses.

For details on authenticating your requests, refer to the [API reference](/api-reference/introduction).