Activate Account

Create a Stripe Checkout session for the initial $5 account activation purchase.

This is a one-time payment that activates the credit account. The user sees a quantity of 5 ($5.00) by default, adjustable up to$10,000 on the Stripe page. After payment, the webhook credits the balance and all API calls will succeed.

Also callable any time the user wants to add more credits (idempotent).