The Selz API is organized around REST. Our API has predictable, resource-oriented URLs, and uses HTTP response codes to indicate API errors. We use built-in HTTP features, like HTTP authentication and HTTP verbs, which are understood by off-the-shelf HTTP clients.

JavaScript SDK

The Selz JavaScript SDK is a lightweight library to allow you to build ecommerce into any web application. You can query for product information and manage shopping carts.


The embeds are a way to embed products, a store or a cart on your own website. They are built using the JavaScript SDK, Preact, Preact Habitat, Emotion (CSS-in-JS) and of course ES6/7.

Selz Theme Kit

The Selz Theme Kit provides utilities for local development of Selz themes, offering an alternative workflow to the platform's online theme editor IDE and Store Builder.