Simple Cloud Identity Management (SCIM) is a standard REST/JSON API to standardize User and Group CRUD (Create, Read, Update, Delete). For developers and system administrators, it reduces the cost and complexity of user management operations by providing a common user schema and extension model, as well as binding documents to provide patterns for exchanging this schema using standard protocols.
Detailed specifications for SCIM can be found at http://www.simplecloud.info.
In Gluu's implementation, we have User, Group and Bulk operations. Below are the Gluu implementations for SCIM: