FastMCP
Pythonic framework for building MCP servers and clients quickly.
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About FastMCP
FastMCP is listed in our MCP servers category and is aimed at builders. Pythonic framework for building MCP servers and clients quickly. Pricing, as the maker states it: Open source. Maturity: Mature. We last checked the official link on 2026-10-16.
What is FastMCP?
FastMCP is a Pythonic framework for MCP servers, clients and interactive apps. A server starts with ordinary Python, and declaring a tool as a Python function generates its schema, validation and documentation automatically.
Connecting to a server takes a URL, with transport handled for you. It is maintained by Prefect.
Sources: the official README and our directory listing, checked 2026-10-18. Official site: gofastmcp.com/getting-started/welcome.
Who is FastMCP for?
Python developers building MCP servers or clients quickly.
FastMCP at a glance
- Open source: Yes (Apache License 2.0)
- GitHub: PrefectHQ/fastmcp · 28,158 stars (as of Oct 21, 2026)
Key features
- MCP servers from plain Python functions
- Automatic schema and validation
- Clients and interactive apps
FastMCP FAQ
What is FastMCP?
FastMCP is a Pythonic framework for MCP servers, clients and interactive apps. A server starts with ordinary Python, and declaring a tool as a Python function generates its schema, validation and documentation automatically.
Who is FastMCP for?
Python developers building MCP servers or clients quickly.
Is FastMCP free?
FastMCP's pricing, as the maker states it: Open source. Open-source tools are free to use, though you may still pay for model API usage or a hosted plan. Check the official site for current plans.
Is FastMCP open source?
Yes. FastMCP is released under the Apache License 2.0, according to its GitHub repository.
What are alternatives to FastMCP?
Similar tools include MCP TypeScript SDK, mcp-use, MCP C# SDK, MCP PHP SDK, Skybridge and MCP Kotlin SDK.
FastMCP ratings and reviews
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