{
  "_comment": "Body without an outer jsonrpc envelope. The normalizer wraps it in {jsonrpc:2.0, id:<uuid>, method, params}. Some legacy senders post the bare params + method without the envelope.",
  "_added": "2026-04-30",
  "_source": "Pre-RFC sender behavior",
  "method": "message/send",
  "params": {
    "message": {
      "messageId": "msg-8",
      "role": "user",
      "parts": [
        {"kind": "text", "text": "no envelope here"}
      ]
    }
  }
}
