You are here Open REST API - How To is the biggest online retailer from the Netherlands. sells a variety of products, including DVDs, games, music, electronics, computers, and books. The Open API allows developers to access and integrate the functionality and data of the catalog with other websites, applications, affiliated programs, and e-commerce plug-ins. The available API methods are retrieving products and product information, retrieving lists of results, and retrieving search results. Wishlist and shoppingcart methods are available on demand.