Methods, systems, and computer-readable media for manipulating in-memory data entities are provided. Embodiments of the present invention use a Representational State Transfer (“REST”) web service to manipulate the in-memory data entities. In one embodiment, a “snap shot” is taken of the in-memory data entities at a point in time to create representations of the entities. A hierarchy of the representations is built. The hierarchy is used to make the entities addressable via a URI. Embodiments of the invention may then map the entity representations in the hierarchy to the entities. An embodiment of the invention uses handlers to process a REST style request addressed to an entity representation. The handler reads the command and determines whether the command is authorized for performance on the entity and performs that command, if appropriate.