TL;DR: To add Stripe subscriptions to an AI-built app, create your plans as Products and Prices in Stripe, send users to Stripe Checkout to subscribe, store the resulting customer and subscription IDs against your user records, and verify Stripe webhooks to keep access in sync. The API call is easy; the real work is wiring billing state to your auth and handling renewals, cancellations, and failed payments.
What does adding Stripe subscriptions actually involve?
A subscription is more than a "Pay" button. You need five pieces working together:
Plans defined in Stripe (Products + recurring Prices).
A checkout flow that collects payment and creates a subscription.
