SellvyPay SDK

// Create a crypto payment session
const res = await fetch("https://api.sellvy.io/v1/payments/crypto/create", {
  method: "POST",
  headers: {
    "Authorization": "Bearer sk_live_...",
    "Content-Type": "application/json"
  },
  body: JSON.stringify({
    product_id: "prod_abc123",
    currency: "BTC",
    email: "customer@example.com",
    return_url: "https://yoursite.com/thank-you"
  })
});

const session = await res.json();
console.log(session.payment_address);  // Unique BTC address
console.log(session.amount_crypto);    // Amount in BTC
console.log(session.expires_at);       // Session expiry (30 min)

// Poll payment status
const res = await fetch(
  "https://api.sellvy.io/v1/payments/crypto/session_abc123",
  { headers: { "Authorization": "Bearer sk_live_..." } }
);

const session = await res.json();
console.log(session.status);
// "waiting"      — Waiting for payment
// "confirming"   — Transaction detected, waiting for confirmations
// "completed"    — Payment confirmed, order fulfilled
// "expired"      — Session expired without payment