[ximus]

> Starting a new process for each request doesn't feel right.

I think there is a misunderstanding of how stdio works. The process can be long running and receive requests via stdio at any time. No need to start one for each request.

[jacob019]

Sure, but that is not what I'm seeing in FastMCP proxy mode, and it can only talk with the parent process. You make a good point though, stdio is similar to tcp sockets and cross-platform without namespace issues, but can only support one client per process. I could use socat if I want it to talk sockets.