Fax.Plus for ChatGPT

plus.fax.app/mcp

Send and receive faxes from any MCP-compatible AI assistant using the Fax.Plus API

client:ChatGPT transport:streamable-http

Install Fax.Plus in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://mcp.fax.plus/mcp

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