Abstract: An endpoint determines whether a client is authorized to access data. A database stores separate authorizations of a permission model in a data table along with the data. Mapping templates of the endpoint convert a client request for data into a database query for client authorization and the requested data. In response to the query, the database returns to the endpoint the requested data as well as an indication of authorization from the data table. The mapping templates of the endpoint are then used to generate an appropriate response to the client. When the database response indicates the client is authorized, the endpoint can return the requested data to the client. When the database response indicates the client is not authorized, the endpoint can return an error. In some embodiments, the endpoint is an application programming interface (API) gateway that conforms to representational state transfer (REST) software architecture.