Click "Get started" on any paid plan above. You'll land on a secure Stripe checkout page, and once payment is complete, your API key will be generated automagically. Purrfect self-service.
Yes, any time — we're feline flexible. Cancel your current subscription in Stripe and sign up for the new plan. Your old API key will be deactivated and you'll get a new one.
You'll get a 429 response with rate limit info in the body. Daily limits reset at midnight UTC, hourly limits reset on the hour.
The free tier is your trial. It has all the same fields and response format — just lower limits. Let curiosity lead the way.