In simple English
This library helps you connect artificial intelligence models to your own tools and data. You write normal Python code, and the tool turns it into a ready-to-use server. It saves you from writing complex protocol code by hand. Your AI assistant can then run your functions directly. It costs nothing to use, but you need some Python programming skills.
What it is
FastMCP is a Python framework for building Model Context Protocol (MCP) servers, clients, and interactive apps. It generates schemas, handles validation, and manages protocol communication automatically from your functions.
What it is good for
Solo builders who want to connect AI models to custom databases, local files, or internal APIs without writing tedious protocol boilerplate.
- Turns standard Python functions into AI-ready tools with simple decorators.
- Handles protocol details, validation, and schema generation automatically.
- Includes support for building both servers and clients in one library.
- Requires a working knowledge of Python and asynchronous programming.
- Frequent updates across major versions mean you may need to rewrite old code.
- Depends on external AI standards and protocols that change quickly.
Writing raw Model Context Protocol boilerplate code by hand.
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source venv/bin/activate pip install fastmcp