Build with x402Nano Payment API

const response = await fetch('https://api.x402nano.com/v1/payment', {
  method: 'POST',
  headers: {
    'Authorization': `Bearer ${API_KEY}`,
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({
    amount: '1.5',
    currency: 'NANO',
    description: 'Premium subscription',
    webhook_url: 'https://yourapp.com/webhook'
  })
});

const payment = await response.json();
// Returns payment address and ID