{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"grok-sess-001","update":{"sessionUpdate":"agent_thought_chunk","messageId":"t1","content":{"type":"text","text":"The user said ping, so I should reply pong."}}}}
{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"grok-sess-001","update":{"sessionUpdate":"agent_message_chunk","messageId":"m1","content":{"type":"text","text":"pong"}}}}
