RAG & Agents Engineering

M41 lab, the A2A protocol

What comes back over A2A

Three agents served by the real a2a-sdk 0.3.26, each asked Can I export my data after I cancel my plan?. Pick an agent and a JSON-RPC call to read the exact request and response. Then pick how the client reads the reply: that text is what it hands to the next agent.

Agent behind the URL
Call
Client reads the reply from
Result kind
Task state
JSON-RPC error
Characters forwarded

Forwarded to the next agent


      

    

    

      

        
Response

        

        
Recorded from live servers on localhost. Ids are shortened to id-N in order of appearance, timestamps are fixed and the port reads 10002; nothing else is edited. The handbook answer comes from a stub that stands in for the LangGraph graph of lesson 41.2; the envelope around it is the SDK’s own.

      

      

        
Request