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FastMCP
Python framework for building MCP servers, clients, and interactive applications.
FastMCP is a Python framework for building MCP servers, clients, and interactive applications. FastMCP exposes functions as tools, connects to local or remote servers, and manages protocol responsibilities for developers. FastMCP is accessed by adding the package to a Python project with uv add fastmcp.
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At a glance
- Pricing
- Freemium
- Added
- 28 Oct 2026
About FastMCP
FastMCP is a Python framework for building Model Context Protocol (MCP) servers, clients, and interactive applications. FastMCP serves developers building MCP applications and provides documentation designed for developers and coding agents.
FastMCP exposes Python functions, data, and instructions as MCP tools, resources, and prompts. FastMCP generates schemas, validates inputs and outputs, and manages transport, authentication, protocol compatibility, and connection lifecycles. FastMCP clients connect to local or remote MCP servers through Python, the command line, or another MCP application. FastMCP apps let tools return forms, tables, charts, and other interactive interfaces directly in conversations.
FastMCP can be added to a Python project with the command uv add fastmcp. FastMCP documentation includes installation instructions, server-building guidance, Markdown pages, llms.txt formats, and a documentation MCP server. The page does not state pricing.
FastMCP suits developers who want to keep application logic in ordinary Python while delegating MCP protocol responsibilities to a framework. FastMCP documentation reflects the main branch and may describe features that have not reached a stable release. FastMCP for TypeScript is a separately named official counterpart maintained by the same team.
What you can do
- FastMCP exposes Python functions as MCP tools.
- FastMCP generates schemas and validates inputs and outputs.
- FastMCP manages transport, authentication, and protocol compatibility.
- FastMCP connects clients to local and remote MCP servers.
- FastMCP tools can return interactive forms, tables, and charts.
- FastMCP provides command-line access to MCP servers.
- FastMCP exposes documentation through an MCP server and Markdown formats.
Pros and cons
What works
- FastMCP provides a coherent API for servers, clients, and interactive applications.
- FastMCP handles protocol responsibilities while application code remains ordinary Python.
- FastMCP provides documentation formats designed for developers and coding agents.
What to watch
- FastMCP documentation follows the main branch and may describe features not yet available in a stable release.
Who FastMCP is for
Python developers building MCP servers, clients, and interactive applications
- Expose Python functions as MCP tools.
- Publish data and instructions as MCP resources and prompts.
- Connect Python applications to local or remote MCP servers.
- Return interactive interfaces from MCP tools.
- Let MCP-compatible coding agents search FastMCP documentation.
FastMCP FAQ
What is FastMCP?
FastMCP is a Python framework for building Model Context Protocol servers, clients, and interactive applications. FastMCP provides a coherent API and handles schema generation, validation, transport, authentication, and protocol compatibility around application code.
What can you build with FastMCP?
FastMCP supports MCP servers that expose Python functions, data, and instructions as tools, resources, and prompts. FastMCP also supports clients for local or remote servers and interactive applications that return forms, tables, and charts in conversations.
How do you install FastMCP?
FastMCP can be added to a Python project using uv add fastmcp. FastMCP documentation provides installation guidance, package verification instructions, upgrade guides, and a walkthrough for creating a tool, running its server, and calling it from a client.
Can FastMCP connect to remote MCP servers?
FastMCP clients connect to local or remote MCP servers through Python, the command line, or another MCP application. FastMCP handles protocol negotiation, authentication, and connection lifecycle when a client connects to a server URL.
Does FastMCP support TypeScript?
FastMCP has an official counterpart named FastMCP for TypeScript, built and maintained by the same team. FastMCP for TypeScript follows the same server, client, and app concepts described in the Python framework documentation.
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