Fastify support or custom HTTP adapter?

[Njuelle]

Hi team,

I’m wondering how to use the MCP TypeScript SDK with a backend (NestJS) that uses Fastify instead of Express?

Currently, the SDK seems to be tightly coupled with Express, but it could be a great feature to support Fastify or provide a way to use a custom HTTP adapter so users can integrate their own.
What do you think would be the best approach?

I’d be happy to work on a PR for this :)

Thanks in advance!

[haroldadmin]

Hi, I maintain a plugin to run MCP servers over Fastify. I'm working on adding support for Streamable HTTP support, and it should be out soon it's out now!

https://github.com/haroldadmin/fastify-mcp

[eddyv]

Hm, i never had issues running mcp servers on fastify - anything in particular you had issues setting up? You can check out our impl here https://github.com/confluentinc/mcp-confluent/blob/c0927bc9def221105edff74b8f1a8fd36af2e092/src/mcp/transports/http.ts. Hopefully, this helps :)