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title: A2A OAuth2 OBO Credential Injection
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# A2A OAuth2 OBO Credential Injection

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

The A2A OAuth2 OBO Credential Injection policy exchanges incoming bearer tokens using OAuth 2.0
Token Exchange (RFC 8693), Microsoft Entra ID On-Behalf-Of, or OAuth 2.0 Token Exchange with CIBA.

For configuration details, see
[OAuth 2.0 OBO Credential Injection Policy](https://docs.mulesoft.com/gateway/latest/policies-outbound-oauth-obo).

## April 30, 2026

### What’s New

- A2A OAuth2 OBO Credential Injection policy implementation version 1.1.4 is now supported by Omni
  Gateway.

- A2A OAuth2 OBO Credential Injection policy definition version 1.1.2 is now supported by Omni
  Gateway.