Stripe Event → Your API → Database Update → App Response

// Webhook endpoint: POST /webhooks/stripe
export async function handleStripeWebhook(req, res) {
  const sig = req.headers["stripe-signature"];
  const event = stripe.webhooks.constructEvent(
    req.body,
    sig,
    process.env.STRIPE_WEBHOOK_SECRET
  );

  switch (event.type) {
    case "payment_intent.succeeded":
      // Handle successful payment
      break;
    case "customer.subscription.created":
      // Handle new subscription
      break;
    // ... more handlers
  }
}

# Start ngrok tunnel
ngrok http 3001

# Your webhook URL will be:
# https://abc123.ngrok-free.app/webhooks/stripe

🔔 Stripe webhook received: payment_intent.succeeded
💳 Payment succeeded: pi_xxx - $19.99
💾 Payment saved to database for user: usr_xxx