Copy this:
https://mcp.hipage.ai/mcp
Never leaves the app. Works the same everywhere. It goes in settings, not in the chat — a chat can't connect it. In ChatGPT: Settings → Connectors → add an MCP server, with developer mode on.
Opens in your browser, already filled in — you just confirm. If it asks you to log in, that browser isn't signed in to Claude; the steps below skip that.
Added once, it lives on your account — it's there everywhere you use Claude.