Send MCP messages

Use tools/list to discover available tools and their input schemas. Read-only tools expose an optional arguments.liveRead boolean; set it to true to bypass the Public API response cache for that call and retrieve the latest data available from the underlying service. Live reads use much stricter rate limits and can be rejected with HTTP 429 even at low volume: set liveRead only when freshness matters, send live calls one at a time at least a second apart, and on a 429 wait for Retry-After or make a normal read and say the data may be cached; liveRead defaults to false. Write tools do not expose liveRead.