Connect Any Platform with Shift's Shipping API
Built for custom websites, ERP systems, and marketplace apps that need flexible, developer-first shipping automation.
Why Build on Shift's API?
Flexible REST API
Create orders, generate labels, fetch rates and track shipments programmatically from your own systems.
Real-Time Webhooks
Receive instant status updates for every shipment so your systems always reflect the latest delivery status.
Built for Scale
Automate shipping across custom websites, ERPs, and marketplace apps without manual intervention, even at high order volumes.
Developer Documentation
Get started quickly with clear API documentation and sample requests for every endpoint.
Dedicated Integration Support
Our team helps you plan and test your integration, from initial setup through to production rollout.
For businesses running custom websites, ERP systems, or marketplace apps, Shift's flexible API allows you to integrate shipping directly into your own workflows. Automate order creation, label generation, tracking updates and NDR handling at scale, with dedicated support throughout your integration.
How to Enable Custom API Integration on Shift
Log in to your Shift account and open Setup & Manage from the left menu.
Select Custom API Integration from the Available Integrations list and connect your store or account.
Your Custom API Integration orders will start syncing automatically. Go to Orders and click Ship Now to begin fulfilling.
Frequently Asked Questions
Transform Your Custom API Integration Store with Shift
Provide seamless fulfillment to every customer by connecting Custom API Integration to Shift's powerful shipping platform.