
The REST API is commonly used by third-party applications to connect to your store and offer functionality with their product or service. Here is step-by-step guide to set up REST API in your Shift4Shop 3dcart store:
Table of Contents
REST API Setup for Shift4Shop/3dcart

Shift4Shop Rest API
- Login into your Shift4Shop Online Store Manager.
- Go to Modules.
- In the search box, type “api” to search for REST API module.
- Once the REST API module appear, click Settings button, you will be redirected to REST API Apps page.
- Click Add button at top right corner. Paste the following key
4f775f377cecc8dafcd7473ae30ad9a3
into Public Key field then click Save. - When Next-Cart Migration App is found, the pop-up shown below will be displayed.
- Check the Warning message then click Authorize. If you are using monitor with lower fullHD screen resolution, you may need to zoom out your Browser to see Authorize button.
- The Next-Cart Migration application will be listed in REST API Apps page if it’s authorized successfully. Now the application are allowed to interact with your Shift4Shop store.
*Note: For using the migration program, you will need to use your Shift4Shop Store URL. You can get it by going to Settings > Store Settings. Then click on the Manage Domain & Store Url button. Here you can get your Store URL inside the SSL Certificates section.
***Important: If you are going to migrate orders to 3dcart, it’s highly recommended to turn off all email notifications in Settings > Store Settings > Checkout > Order Notification.