Graphwise Platform DocumentationGraphwise API EndpointsThesaurus & Ontology Manager APICustom Scheme and Ontology ServicesWeb Service Method: Create a Class in an OntologyWeb Service Method: Create a Class in an Ontology18/03/2026DescriptionCreate an ontology class.URL: /PoolParty/api/schema/classContent-Typeapplication/jsonSupported MethodsPOSTJSON Request ObjectCreateCustomTypeInputType: CreateCustomTypeInputOntology ClassAttributeTypeCommentaddToCustomSchemeArray of IRIsCustom scheme URI(s)commentLiteralDescription of ontology classcontributorIRIcreatedLiteralcreatorIRIlabelLiteralClass labelmodifiedLiteralschemaUriIRIURI of ontologysubClassOfArray of IRIsSubclassesuriIRIURI of classReturnsContent-Type: application/jsonStatus: 200 - OK