Payment Integration
Connecting your app to a payment processor like Stripe or Polar to accept subscriptions, one-time payments, or invoices.
Payment integration is how your application collects money. Services like Stripe, Polar, and Paddle handle the complexity of credit card processing, tax calculation, subscription billing, and regulatory compliance so you do not have to.
The typical flow: your app redirects the user to a hosted checkout page (or embeds a payment form), the payment service processes the card, and sends a webhook back to your server confirming the payment. Your server then updates the user's subscription status in your database.
For vibe coders, payment integration is one area where getting it right matters more than getting it fast. AI can generate the checkout redirect, webhook handler, and subscription status checks. But you need to verify the webhook signatures, handle edge cases (failed payments, refunds, plan changes), and test thoroughly in sandbox mode before going live.
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