Buy from Uline via API
Programmatically order shipping and industrial supplies from Uline. Automate procurement of packaging materials via Zinc.
How the Uline integration works
Uline is North America's leading distributor of shipping, industrial, and packaging materials, offering over 41,000 products with same-day shipping. Zinc's Uline integration enables automated procurement of boxes, tape, labels, warehouse supplies, and janitorial products.
Essential for logistics platforms, warehouse management systems, and any business that needs to automate the ordering of shipping and industrial supplies.
What you can build with the Uline API
Build with the Uline integration API for search, ordering, tracking, and returns.
Uline Order Placement API
Place orders with a product URL and shipping address. No checkout flows required — Zinc handles the retailer-side workflow and processes orders asynchronously.
{
"products": [
{
"url": "https://uline.com/...",
"quantity": 1
}
],
"shipping_address": {
"first_name": "Jane",
"last_name": "Doe",
"address_line1": "123 Main St",
"city": "San Francisco",
"state": "CA",
"postal_code": "94105",
"country": "US",
"phone_number": "5551234567"
},
"max_price": 39900
}Uline Order Status API
Retrieve order details including item statuses, shipping address, and processing results. Poll to track progress from pending through to delivery.
{
"id": "550e8400-e29b-41d4-a716-446655440000",
"status": "order_placed",
"max_price": 39900,
"items": [
{
"url": "https://uline.com/...",
"quantity": 1,
"status": "shipped"
}
],
"tracking_numbers": [
{
"carrier": "ups",
"tracking_number": "1Z999AA10123456784",
"created_at": "2026-01-15T14:30:00Z"
}
],
"created_at": "2026-01-15T10:00:00Z"
}Uline Shipment Tracking
Tracking numbers are automatically extracted from retailer shipping notifications and returned in the order response. Supports UPS, FedEx, USPS, Amazon Logistics, and DHL.
{
"id": "550e8400-e29b-41d4-a716-446655440000",
"status": "order_placed",
"tracking_numbers": [
{
"carrier": "ups",
"tracking_number": "1Z999AA10123456784",
"created_at": "2026-01-15T14:30:00Z"
},
{
"carrier": "amazon",
"tracking_number": "TBA123456789000",
"created_at": "2026-01-16T09:15:00Z"
}
]
}Uline Managed Accounts
Use Zinc-managed checkout accounts or bring your own retailer credentials. Managed accounts handle login, 2FA, and payment automatically — no account setup required.
{
"credentials": [
{
"short_id": "zn_acct_a1b2c3d4",
"email": "orders@example.com",
"retailer": "uline",
"has_totp": true,
"has_forwarding": true
}
],
"total": 1
}Uline Integration FAQ
You can search products, place orders, track shipments, and handle returns through a single Zinc API integration for Uline.
No. Zinc handles the retailer-side ordering workflow so your app can place orders directly via API calls.
Yes. You can fetch tracking status through the API and subscribe to webhook events for shipping and delivery updates.
Create an account, get your API key, and follow the Zinc API docs to send your first search or order request.