The final core component of Moby is the MOBY Central web service registry. MOBY Central is aware of the Object, Namespace and Service ontologies, and thus can match consumers who have in-hand Moby data, with service providers who claim to consume that data-type (or some compatible ontological data-type) or to perform a particular operation on it. This "semantic matching" helps ensure that only relevant service providers are identified in a registry query, and moreover, ensures that the in-hand data can be passed to that service provider "verbatim". As such, the interaction between a consumer and a service provider can be partially or fully automated, as shown in the Gbrowse Moby and Ahab clients respectively.