Cello for ChatGPT

so.cello/mcp

Cello MCP server to launch and manage your Referral and Partner program

client:ChatGPT transport:streamable-http

Install Cello in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://mcp.cello.so/mcp

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