Cronofy MCP by usefulapi for ChatGPT

io.usefulapi/cronofy

MCP server for Cronofy — read calendars, events and free/busy, and create, update or delete events.

client:ChatGPT transport:streamable-http tools:8

Install Cronofy MCP by usefulapi in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://cronofy.usefulapi.io/mcp

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