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# Credential Injection API Key

> For the full documentation index, see: https://docs.mulesoft.com/llms.txt

The Credential Injection API Key policy injects an API key or client credentials headers into
outgoing requests.

For configuration details, see
[Credential Injection API Key Policy](https://docs.mulesoft.com/gateway/latest/policies-outbound-api-key).

## September 09, 2025

### What’s New

- Credential Injection API Key policy implementation version 1.0.1 is now supported by Omni Gateway.

- Credential Injection API Key policy definition version 1.0.0 is now supported by Omni Gateway.