fastmcp MCP Server
punkpeye/fastmcp
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A TypeScript framework for building MCP servers.
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punkpeye/fastmcp is a TypeScript MCP server licensed under MIT. A TypeScript framework for building MCP servers. Topics: mcp, sse.
Ranked #101 out of 24846 indexed tools.
In the top 1% of all indexed tools.
Has 3,272 GitHub stars.
Used by 1,719 other projects.
Has 97 contributors.
Ecosystem
TypeScript MIT
mcpsse
Score Breakdown
Stars 15% 3,272
3,272 stars → well-known project
Freshness 25% 29d ago
Last commit 29d ago → recently updated
Issue Health 25% 93%
148/159 issues closed → responsive maintainer
Contributors 10% 97
97 contributors → active community
Dependents 25% 1,719
1,719 dependents → widely adopted
npm Downloads N/A
PyPI Downloads N/A
Forks 323
Description Brief
License MIT
Weights: Freshness 20% · Issue Health 20% · Dependents 22% · Stars 10% · Contributors 8% · How we score →
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From the README
# FastMCP A TypeScript framework for building [MCP](https://glama.ai/mcp) servers capable of handling client sessions. > [!IMPORTANT] > > FastMCP implements the legacy, handshake-based MCP revisions (`2025-11-25` and earlier). It does not support the current specification, [`2026-07-28`](https://modelcontextprotocol.io/specification/2026-07-28/), which made the protocol stateless — no `initialize` handshake and no `Mcp-Session-Id`. For a framework targeting the current spec, use [ViteMCP](https://github.com/vitemcp/server). ## Features - Simple Tool, Resource, Prompt definition - [OpenAPI to MCP conversion](#openapi) - [Authentication](#authentication) - [Passing headers through context](#passing-headers-through-context) - [Session ID and Request ID tracking](#session-id-and-request-id-tracking) - [Sessions](#sessions) - [Image content](#returning-an-image) - [Audio content](#returning-an-audio) - [Embedded](#embedded-resources) - [Logging](#logging) - [Error handling](#errors) - [Read full README on GitHub →
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