ISO/TS 29002-20:2010 specifies an interface to retrieveinformation from a concept dictionary. Three sets of capabilities,called "services", are defined:
Location Service: given a registration authority identifier,returns location on the Internet of Terminology and Ontologyservers for the registration authority;
Terminology Service: searches for concepts, languages, and otherelements of the dictionary based on a rich set of keywords, searchcriteria, and expressions; given an international registration dataidentifier (IRDI) in the format defined in ISO/TS 29002-5,retrieves terminological information;
Ontology Service: retrieves ontological information about aconcept based on the concept's IRDI.