A2A Multi-Turn Conversations

Before writing code

Fetch live docs:

1. Fetch https://a2a-protocol.org/latest/specification/ for multi-turn and input-required handling
2. Web-search site:github.com a2aproject A2A multi-turn input-required for multi-turn protocol details
3. Web-search site:github.com a2aproject a2a-samples multi-turn for conversation examples
4. Fetch SDK docs for multi-turn task handling patterns

Conceptual Architecture

What Multi-Turn Means in A2A

Multi-turn conversations allow agents to have iterative exchanges within a single task. The server agent can request more input from the client, creating a back-and-forth dialogue before reaching a final result.

The input-required State

The key mechanism for multi-turn is the input-required task state: