The Cornerstone On Demand Web Services API provides the tools for setting and getting objects related to the Cornerstone On Demand learning management system. The Web Services API provide the ability to get and set users, organizations, and learning management objects (classes). There are also web services for searching the course catalog, registering users for classes, and more. All requests and responses are sent using XML. Cornerstone documentation provides technical specifications and examples for how to create these XML documents.