Connect Cursor to Railway

One line gives Cursor your Railway account as tools: 1 endpoint, projects, more, called with your own connection. No key in the prompt, a receipt for every call, revoke Cursor's access alone any time.

Three steps

1. Create a free 0n3 account and connect Railway. Paste a key or sign in; it lands in your vault, encrypted.
2. Install 0n3 into Cursor. One-click install link, or the mcp.json block.
3. Ask Cursor: whoami. Then: "List customers in Railway".

The line above carries a placeholder; 0n3.app/install mints a real key named for Cursor and fills it in.

What Cursor can then do in Railway

Railway in other AI clients

Cursor with other apps

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