What happens if I exceed my credit?
If you exceed your credit, your API Requests will return an HTTP 500 error code, with a message stating that you ran out of credit. If you have auto-refill turned on, an attempt will be made to charge your saved payment method. If auto-refill succeeds, your credit will be automatically refilled and your request will succeed.
Auto-refill works by setting a threshold for refilling your credit before it gets to zero, preventing the scenario where you can run out of credit.