Cursor API setup

How to use a cheaper API key with Cursor

Cursor sessions can spend quickly when code context grows. A controlled OpenAI-compatible key lets you test Cursor without exposing unlimited provider spend.

Use a scoped key

Create a separate key only for Cursor, then set model allowlists, daily budget, and max output limits before using it.

Watch coding-session cost

Coding agents can retry, inspect files, and produce long output. Logs make the first expensive pattern visible.

One key per editor
Budget cap before routing
Review request cost after each session

Keep setup reversible

If Cursor behaves unexpectedly, disable that key without affecting your other clients or production app.

FAQ

Can Cursor use an OpenAI-compatible base URL?

Yes, when the client configuration allows a custom compatible endpoint and API key.

Why use a separate Cursor key?

It makes editor usage easy to cap, inspect, and disable.