Introduction

The eCommerce Catalog service plugin (formerly SPI) is a service provider interface that provides functionality for implementing your own custom catalog of items and/or services to be sold on your site. Define how your custom catalog interacts with the eCommerce purchase flow in a way that is not currently supported natively by Wix. For example, you can determine the number of catalogs to choose from, provide a simplified catalog of products or services, and choose the products or services you wish to sell. The custom catalog can be used instead of, or alongside, a Wix Stores catalog.

Wix eCommerce calls the service plugin endpoint getCatalogItems() to retrieve the custom catalog's items. These items can then be displayed in dynamic product pages, as well as the cart, checkout, and order.

Learn more:

• Custom Catalog Service Plugin.
• Velo: Custom App Extensions Using Service Plugins

To add a service plugin

1. Add the plugin to your site.
2. Update the getConfig() function in the -config.js file that is added to your site during step 1.
3. Update the getCatalogItems() function in the .js file that is added to your site during step 1.