fmsg for ChatGPT

io.github.markmnl/fmsg-mcp

Federated messaging with your fmsg hosting provider. Connect with OAuth or an API key.

client:ChatGPT transport:streamable-http runtime:npm

Install fmsg in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://{oauth_mcp_endpoint}

Custom connectors are a paid-plan feature and take a remote URL only. ChatGPT cannot run a packaged server locally. ChatGPT docs