Alex Merced • 4/11/2025

A Journey from AI to LLMs and MCP - 7 - Under the Hood — The Architecture of MCP and Its Core Components

This technical article provides an in-depth look at the Model Context Protocol (MCP) architecture. It breaks down the core components—Hosts, Clients, and Servers—and explains the message lifecycle and transport layers (stdio, HTTP+SSE). The piece details how MCP enables secure, modular communication between LLMs and external systems by standardizing connections to tools, resources, and prompts, drawing parallels to data interoperability protocols like Apache Iceberg.

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#client-server #llm #mcp