Ship programmatically.
The QLS REST API gives you full control - booking, labels, tracking, and webhooks. Build QLS into your existing workflow or create something entirely custom.
Create a shipment in one API call.
curl -X POST https://api.qls.quince.com/v1/shipments \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"order_reference": "ORD-12345",
"origin": "HK_WAREHOUSE_01",
"destination": {
"name": "Jane Smith",
"street": "123 Main St",
"city": "San Francisco",
"state": "CA",
"zip": "94102",
"country": "US"
},
"parcel": {
"weight_lb": 1.2,
"length_in": 10,
"width_in": 8,
"height_in": 4
}
}'What you can build.
Booking API
Create shipments and generate labels programmatically.
Tracking API
Pull real-time tracking status for any shipment.
Webhooks
Get push notifications for status changes, exceptions, and balance alerts at your endpoint.
Label API
Generate and download shipping labels.
Cancellation API
Cancel shipments and release wallet holds.
EDD API
Get estimated delivery dates before booking.
Serviceability API
Check if a destination is serviceable before quoting.
Choose your integration path.
Shopify App
Best for Shopify stores. Setup time: 5 minutes. Automatic order sync, tracking sync, branded tracking pages.
Install on Shopify →REST API
Best for custom platforms, high-volume automation. Setup time: 1–2 days. Full programmatic control over every aspect of shipping.
Read API Docs →CSV Upload
Best for low-volume or one-off shipments. Setup time: Instant. Upload a spreadsheet, get labels and tracking. Coming soon.