fastmcp
Active·★ 3.1k·MIT·Updated 2026-05-04
★ Trending
A TypeScript framework for building MCP servers.
FastMCP is an opinionated TypeScript framework built on the official MCP SDK, designed to simplify the creation of MCP servers. It handles boilerplate, provides intuitive APIs, and includes built-in best practices for session management, streaming, and error handling.
#TypeScript#MCP#Server Framework#Session Management#HTTP Streaming#Coding
01
Features
01Simple Tool, Resource, Prompt definition
02Authentication, Session ID and Request ID tracking
03HTTP Streaming (with SSE compatibility)
04Stateless mode for serverless deployments
05CLI for testing and debugging
02
Compatibility
MCP (Model Context Protocol)
Native
Verified via docs
TypeScript/Node.js
Native
Verified via docs
MCP Official SDK
Native
Verified via docs
Standard Schema (Zod, ArkType, Valibot)
Supported
Verified via docs
MCP Clients (e.g., Cursor)
Supported
Verified via docs
03
Quick start
1
$ npm install fastmcp
04
Use cases
↳Rapidly building MCP servers without low-level implementation details.
↳Deploying MCP servers in serverless environments.
↳When an opinionated framework is preferred for best practices and simplified development.
05
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