{"server":"pro.magicmaster/mastering","transport":"streamable-http (POST only)","protocolVersions":["2026-07-28","2025-11-25","2025-06-18"],"playbook":"https://magicmaster.pro/agents.md","manifest":"https://magicmaster.pro/agent.json","hint":"POST JSON-RPC here. Start with server/discover or tools/list."}