Articles on: Shopify Integration

API Documentation

If you or your developer are building a custom setup on top of Fancy Product Designer, for example, a custom cart integration, a headless storefront connection, or scripts using our JavaScript API, our dedicated API documentation is the best place to start.

Check Back Regularly

The API documentation is updated frequently as we add features and improve the app. Custom setups built against it can break silently after such an update if they relied on older behavior. We recommend checking the documentation again from time to time, especially before troubleshooting an issue with a custom integration or before building something new on top of it.
If something stops working as expected, comparing your implementation against the latest documentation is a good first step.

If you're still stuck, reach out to us via in-app chat.

Updated on: 23/07/2026

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