Pick a plan, drop in your card, run your trial for 7 days. If the engine doesn't earn the bill, cancel from the dashboard — no charge.
You finish checkout on Stripe. Card is stored, but nothing charged for 7 days.
You land on the welcome page with your tenant ID, your API key (shown once), and your embed snippet.
Trial ends. Subscription auto-bills. Cancel from the dashboard anytime before day 7 and the card is never charged.