Business accounts on ShipUniversal can now access our rate-estimator directly through an API — pulling instant, volumetric-aware shipping quotes straight into your own storefront, ERP, or order management system, without routing shippers through our website first.
Until now, getting an accurate quote meant visiting our quote page, entering package details, and reading the result back into whatever system actually needed it. For businesses processing hundreds or thousands of shipments a month, that manual step added friction at exactly the point where speed matters most — checkout.
What the API does:
- Returns instant quotes based on origin, destination, weight and dimensions, using the same volumetric-weight logic as our website calculator so quotes match what you'll actually be charged.
- Supports batch requests, so you can price an entire order queue or product catalogue in a single call instead of one shipment at a time.
- Reflects live rate changes and surcharges automatically — no need to maintain a separate rate card on your end.
- Ships with sandbox credentials for testing before you go live, and standard API-key authentication for production traffic.
This is aimed squarely at e-commerce sellers who want to show real shipping costs at checkout, and enterprise shippers who need programmatic access for internal tooling or customer-facing quote widgets. Business accounts can request API access from their account dashboard; our team will provide credentials and integration documentation within one business day. If you run a high-volume operation and want to talk through the integration, reach out to our support team and we'll get you set up.