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

# API token

DMM API keys have been deprecated in Domino 5.6, and you can no longer generate new DMM API keys. Instead, use Domino API keys to authenticate requests to the Model Monitoring API using the `X-Domino-Api-Key` header. Learn how to [generate Domino API Keys](/cloud/reference/api/domino-api-authentication).

Existing DMM API keys will continue to authenticate requests to the Model Monitoring API with the `X-DMM-API-KEY` header. You can revoke DMM API keys based on your security policy by clicking **Revoke Token** from the Model Monitor Settings page.