FastMCP 3.0 Server Development

Complete reference for building production-ready MCP (Model Context Protocol) servers with FastMCP 3.0 - the fast, Pythonic framework for connecting LLMs to tools and data.

When to use this skill

Use FastMCP Server when:

• Creating a new MCP server in Python
• Adding tools, resources, or prompts to an MCP server
• Implementing authentication (OAuth, OIDC, token verification)
• Setting up middleware for logging, rate limiting, or authorization
• Configuring providers (local, filesystem, skills, custom)
• Building production MCP servers with telemetry and storage
• Upgrading from FastMCP 2.x to 3.0