EasyPost

// EasyPost handles shipping for UCP-initiated orders with tracking webhooks.
import EasyPostClient from '@easypost/api';
const client = new EasyPostClient(process.env.EASYPOST_API_KEY);

// Create a shipment after UCP checkout
const shipment = await client.Shipment.create({
  to_address: {
    name: consumerName,
    street1: shippingAddress.line1,
    city: shippingAddress.city,
    state: shippingAddress.state,
    zip: shippingAddress.zip,
    country: 'US',
  },
  from_address: merchantAddress,
  parcel: { length: 9, width: 6, height: 2, weight: 10 },
});

// Buy the lowest rate
const boughtShipment = await client.Shipment.buy(shipment.id, shipment.lowestRate());

// Register webhook for tracking events
await client.Webhook.create({ url: 'https://your-app.com/api/shipping-webhook' });