Semantic Search (Classes & Properties)

Operation	Method	Endpoint	Request Content-Type	Response Accept	Notes
Keyword Search	GET	`/ontologies/{id}/search?q={term}`	—	`application/json`	Matches `rdfs:label`, `skos:altLabel`, `rdfs:comment`
Semantic Similarity Search	POST	`/ontologies/{id}/search/semantic`	`application/json`	`application/json`	Vector-based search using embedding of class/property descriptions
Subclass Traversal Search	GET	`/ontologies/{id}/classes/{classIRI}/subclasses`	—	`application/json`, `text/turtle`	Returns full subclass hierarchy; `?depth=` param for bounded traversal
Combined Search	POST	`/ontologies/{id}/search/hybrid`	`application/json`	`application/json`	Combines subclass structure + semantic similarity; returns ranked results with `rdfs:subClassOf` path

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