The Sphere.Io Node.js SDK by Commercetools allows API communication to implement eCommerce features into applications. Additional components include marketing tools, point of sale, and couch-commerce. Developers can access via OAuth2.
Switch announced the CardSavr API which allows credit card details to flow directly from the card issuer to thousands of ecommerce sites. Once integrated, updated card information can be sent to the selected sites without users needing to reload the information, or card issuers to reissue cards.