Shopify's API currently supports both JSON and XML, however JSON is the preferred method for API consumption. Over the coming months, XML will slowly be deprecated. All concerned parties will receive a deprecation notice once this comes to pass.
Making Shopify Apps
Are you a developer looking to create a Shopify App?
The Shopify API allows for an almost unlimited set of possibilities for interfacing the Shopify platform with your favorite CMS, web app, or other third party software.
Getting started with the Shopify API is easy. We have a great getting started guide to help you start building your app, tutorials that can help you through more advanced issues and API Reference for learning exactly what our API can do.Start building your App
A Developer's Resource
Visit our forums to connect with the community and find out more about the Shopify API and App development.
APIs & Technology forum
Developing Shopify Apps with the API? This is the place.Visit the API forum
You should follow us on Twitter for all the latest Shopify API & Apps news.