.. index:: Semantic JSON APIs .. _Semantic JSON APIs: ****************** Semantic JSON APIs ****************** A RESTful JSON API that conforms to this specification: **MUST** provide the schema link header specifying the url of the json-schema for the resource. .. sourcecode:: http Link: ; rel=”describedby” **MUST** provide the RDF context link header specifying the JSON-LD context for the resource. .. sourcecode:: http Link: ; rel="http://www.w3.org/ns/json-ld#context"; type="application/ld+json" **MUST** implement OPTIONS and provide the :ref:`HTTP Schema Resource` as the entity response detailing the HTTP methods supported by the resource along with the schema and context links for the request and response entity bodies.