Purchase Reload

Buy one approved bundle now, on the saved card.

Idempotency-Key is required because this charges immediately. A client that lost the response retries with the same key and is handed the attempt it already made rather than a second charge.

Usage is added when the payment succeeds, which is usually before this returns. A decline comes back as a failed attempt, not an error. When the bank wants the customer present, the attempt is requires_action and confirmation_url is where to send the browser.