---
title: "API Documentation"
url: "https://www.shipstation.com/documentation/"
type: "page"
modified: "2025-08-27T14:37:31-05:00"
---
API Documentation
=================

Build faster, smarter workflows with our robust APIs—designed to connect your end-to-end shipping process, from order to doorstep.

ShipStation API
---------------

High-performing, standalone API that allows you to integrate once to access 200+ carriers, automate fulfillment, manage returns, and grow with confidence.

 [Documentation](https://www.shipengine.com/docs/) [Full API Reference](https://shipengine.github.io/shipengine-openapi/)

View Endicia API (Legacy) [Documentation](https://www.endicia.com/developer/docs/els.html#endicia-label-server-api)

 ![](https://www.shipstation.com/wp-content/uploads/2025/08/Image.png)

 ![](https://www.shipstation.com/wp-content/uploads/2025/08/SSAPI-RGB-TrackingAPI-2color.svg)##### API Status

 [Learn More](https://status.shipengine.com/?_gl=1*4xq44x*_gcl_au*MTcxNzc3MDk1Ni4xNzUxOTg2OTMx*_ga*MjA0OTExNTMwNy4xNzUyMDczOTM3*_ga_BVH8S1G396*czE3NTM3OTk4MDYkbzE1JGcxJHQxNzUzODAwMzE5JGozMiRsMCRoMA)

 ![](https://www.shipstation.com/wp-content/uploads/2025/08/ssapi-rgb-webdev-2-color.svg)##### Libraries & SDKs

 [Learn More](https://www.shipengine.com/docs/tools/)

 ![](https://www.shipstation.com/wp-content/uploads/2025/06/ShipStation_DarkGreenBrightGreen_RGB_ShippingCarrierVan.svg)##### Setup Carriers

 [Learn More](https://www.shipengine.com/docs/carriers/setup/)

 ![](https://www.shipstation.com/wp-content/uploads/2025/08/ShipStation_DarkGreenBrightGreen_RGB_Money01.svg)##### Calculate Costs

 [Learn More](https://www.shipengine.com/docs/rates/)

ShipStation Companion API
-------------------------

Consolidate orders, print discounted labels, track shipments, and sync inventory in real time–all while plugging directly into your shipping UI.

Over 100,000 marketplaces, ERPs, and fulfillment systems rely on the Companion API to connect seamlessly with ShipStation and power their shipping.

 [V1 Documentation](https://www.shipstation.com/docs/api/) [V2 Documentation](https://docs.shipstation.com/)

 ![](https://www.shipstation.com/wp-content/uploads/2025/08/Image-1.png)