フリー問題

問題文

A client sends a tools/call request. Which combination of fields does the specification require in the request's _meta?

選択肢

1. None are required for tools/call; they are only needed for server/discover, and a bare request with an empty _meta object is fully conforming.
2. The protocol version and the client capabilities are required; the client info and the log level are optional.
3. Only the protocol version is required.
4. All four fields are required on every request, because a server that is not allowed to infer anything from earlier requests on the same connection has no other way to learn who the caller is or how verbose its logging should be for this particular call.