What FastMCP does
FastMCP is a full framework for building MCP applications, providing unified APIs for servers, clients, and interactive apps.
Why teams reach for it: Simplifies MCP development with one coherent API for servers, clients, and apps.
Worth knowing
It implements MCP specification revision 2026-07-28, builds servers and clients, over stdio, SSE, Streamable HTTP, and can generate tools directly from an OpenAPI spec.
How FastMCP compares
Fields the vendor doesn't document are left blank here rather than guessed — a blank means nothing verified, not a "no."
- Language
- Python
- Official Sdk
- No
- Spec Revision Implemented
- 2026-07-28
- Transports
- stdio, SSE, Streamable HTTP
- Builds Servers
- Yes
- Builds Clients
- Yes
- Auth Helpers
- Built-in
- Generates From Openapi
- Yes
- Mcp Apps Support
- Yes
- Server Composition
- Yes
- Package Registry
- PyPI
- Package Name
- fastmcp
What will you use to implement the protocol?
A framework or SDK gives developers pre-built code for creating an MCP server or client, so they don't have to implement the protocol from scratch.