In addition to using the Citrix Director console, historical data is available by querying the Monitor Service using the Open Data (OData) protocol (http://www.odata.org).
Using the OData API, you can get information about objects such as hypervisors, machines, desktop groups, users, sessions, and connections.
The following two endpoints are exposed by the Delivery Controller server:
Before being able to retrieve the data, you must authenticate with a valid account. The data you can access is determined by XenApp roles and permissions.