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).

Constants

MCP_TOOL_NAME_SEPARATOR

Joins an MCP server’s name to one of its tools’ names in the callable name the registry exposes: <server>__<tool>. MCP tools join a tool registry after plugin tools, so the plugin host refuses any plugin tool name that contains this separator.