haroldadmin/fastify-mcp

A Fastify plugin to run Model Context Protocol (MCP) servers

47
/ 100
Emerging

Supports both Streamable HTTP and legacy HTTP+SSE transports for MCP protocol communication. Handles multi-session management with in-memory session tracking and lifecycle events (connected, terminated, error), addressing a gap in the official MCP SDK. Allows stateful or stateless server configurations integrated directly into Fastify routes via plugin registration.

Available on npm.

Maintenance 6 / 25
Adoption 7 / 25
Maturity 18 / 25
Community 16 / 25

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Stars

25

Forks

7

Language

TypeScript

License

Apache-2.0

Last pushed

Dec 10, 2025

Commits (30d)

0

Dependencies

2

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