The Schemas API was introduced in XNAT 1.7 to provide information on installed data types, and to provide backwards compatibility for code developed against older versions of XNAT. There is a core set of namespaced endpoints that returns listings of datatypes, or can return the schemas themselves. In addition to these namespaced URIs, there are also direct "schema-only" paths that can return schemas, i.e. https://{server}/schemas/xdat.xsd.

API Spec