A2A

Agent-to-Agent protocol support: independent agents talking to each other as peers, as protocol clients and as protocol servers.

The a2a-sdk package is an optional extra (pip install 'augments-adk[a2a]'). When it is not installed, every name below is bound to None so downstream code can skip A2A wiring gracefully.

Client side

• augments.adk.a2a.A2AAgent
• augments.adk.a2a.A2ARunner
• augments.adk.a2a.A2AClient
• augments.adk.a2a.A2ARunResult
• augments.adk.a2a.A2AStreamEvent

Server side

• augments.adk.a2a.A2AServer
• augments.adk.a2a.A2AExecutor
• augments.adk.a2a.build_starlette_app

Long-running tasks

• augments.adk.a2a.A2AContinuationToken
• augments.adk.a2a.A2ATaskStatus
• augments.adk.a2a.A2ATaskStateLiteral
• augments.adk.a2a.TaskStore
• augments.adk.a2a.InMemoryTaskStore
• augments.adk.a2a.SQLiteTaskStore

Composition

• augments.adk.a2a.A2AExecutableAdapter

Exceptions

• augments.adk.a2a.A2AError
• augments.adk.a2a.A2AProtocolError
• augments.adk.a2a.A2ATransportError
• augments.adk.a2a.A2ATaskError
• augments.adk.a2a.A2ATaskCancelledError
• augments.adk.a2a.A2ATaskInterruptedError

Usage lives in the A2A guide.