API Version Testing Based on Query Schema

In one embodiment, a method includes receiving, from a third-party system, a data query requesting data items to be retrieved from hierarchical graphs associated with a social-networking system, each of the hierarchical graphs comprising one or more nodes, the one or more nodes representing one or more data items, respectively, and each of the data items having a particular one of a plurality of data types, wherein the data query corresponds to a data structure of the specific data type of the requested data items, determining, for each of the requested data items, whether the third-party system is authorized to access the data item based on a privacy setting associated with the requested data item, retrieving, based on the determining, each of the data items the third-party system is authorized to access, and sending, to a third-party system in response to the data query, each of the authorized data items.