Reference guide to advanced Model Context Protocol (MCP) features and transports, building on mcp-fundamentals. Covers sampling (letting a server borrow the client's LLM connection instead of integrating its own), log and progress notifications for long-running tools, roots (scoping filesystem acces
Reference guide to advanced Model Context Protocol (MCP) features and transports, building on mcp-fundamentals. Covers sampling (letting a server borrow the client's LLM connection instead of integrating its own), log and progress notifications for long-running tools, roots (scoping filesystem access and helping Claude locate files without full paths), the JSON message taxonomy (request/result pai