Module mcp_client 

MCP (Model Context Protocol) client — connects to external tool servers. Supports multiple transports: stdio (spawn local process), HTTP, and SSE.

Structs

McpRegistry

Registry of all connected MCP servers, with a flat tool index.

McpServer

A live connection to one MCP server (any transport).

McpServerCapabilities

Server-advertised MCP capabilities parsed from the initialize result. Sub-flags subscribe / listChanged are captured but currently unused (reserved for a future subscriptions spec).