[Feat] Implement Client-Side Auth for Remote Agents #15098
Description
What would you like to be added?
Enable gemini-cli to securely connect to and interact with remote Agent2Agent (A2A) compatible agents that require authentication. The A2A protocol delegates authentication to standard HTTP mechanisms .
Why is this needed?
Supported Schemes:
- API Key: Support for custom headers (e.g. MY-API-Key: ).
- Bearer Token: Support for JWTs or OAuth tokens.
We must handle full OAuth flow.
Additional context
References
- A2A Protocol: Enterprise Ready (https://a2a-protocol.org/latest/topics/enterprise-ready/)
- A2A Protocol: Specification (https://a2a-protocol.org/latest/specification/)