Which JSON-RPC 2.0 message type has NO id field and expects NO respons — MCP Professional Practice — Claude Cert Academy

Which JSON-RPC 2.0 message type has NO id field and expects NO response?

• Request
• Response
• Notification
• Error response

Answer: Notification

Notifications are identified by the absence of an id field. They are fire-and-forget — no response is expected and sending one would be a protocol violation. The notifications/ method prefix in MCP messages is a hint, but the definitive signal is the missing id.

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