METHOD OF EXTENDING WEB SERVICE APPLICATION PROGRAMMING INTERFACES USING QUERY LANGUAGES

Embodiments of the claimed subject matter provide methods that support extension of web service application programming interfaces using query languages. In one embodiment, a method is provided that includes modifying an interface to a social graph. The social graph includes nodes connected by edges that represent relationships between the nodes, which form a plurality of trees associated with users to the social graph. Modifying the interface includes adding a node to at least one user's tree and attaching one or more queries to the node. The attached queries operate on a sub-tree of the added node. The interface is modified in response to the user(s) invoking a service configured to perform queries on the sub-tree.