CartQL
GraphQL shopping cart and checkout API built to work with your existing inventory.
Cart and checkout services provide lightweight functionality to handle cart operations and the ability to convert those into orders through a checkout process. This differs from a commerce service or platform that provides a broader set of commerce features such as catalog, order management, promotions, and more. A decoupled cart and checkout service is agnostically designed to digest products from a variety of different sources and should seamlessly integrate with any payment gateway, shipping methods, tax calculation, and promotion APIs. A cart and checkout service does not provide a fully-featured Order Management System (OMS).