FastMCP is the fast, Pythonic way to build Model Context Protocol (MCP) servers and clients, enabling developers to expose tools, resources, and prompts to AI agents with minimal boilerplate. It acts as the high-level framework layer on top of the MCP specification, reducing server authoring to just a few lines of Python while supporting full MCP capabilities including tool routing, resource management, and client connections. With 24,000+ GitHub stars, it has rapidly become the standard toolkit for AI agent tool integration.