Goals and revenue

PayPal

PayPal conversion tracking starts after your server captures an order. Send the completed capture returned to the browser.

#PayPal revenue tracking

paypal.Buttons({
  createOrder: async () => {
    const res = await fetch("/api/paypal/orders", { method: "POST" });
    return (await res.json()).id;
  },
  onApprove: async (data) => {
    const res = await fetch(`/api/paypal/orders/${data.orderID}/capture`, { method: "POST" });
    const order = await res.json();
    const capture = order.purchase_units?.[0]?.payments?.captures?.[0];
    if (order.status === "COMPLETED" && capture) {
      window.stickybeak("purchase", {
        revenue: capture.amount.value,
        currency: capture.amount.currency_code,
        order_id: order.id,
      });
    }
  },
}).render("#paypal-buttons");

PayPal amounts are normal-unit strings such as "49.00"; do not divide them. The order ID prevents duplicates. PayPal return traffic has no referrer, so it cannot steal attribution. Later subscription charges are not recorded.