Knowledge graph extractor: Markdown (or any format) to knowledge graph with RDFS/OWL ontology

AI-native ontology engine: a Rust MCP server with tools for building, validating, querying, and reasoning over RDF/OWL ontologies. In-memory Oxigraph triple store, native OWL2-DL tableaux reasoner, SHACL validation, SPARQL, versioning. Single binary, no JVM.

Suite of generic Linked Data/SPARQL as well as LinkedDataHub-specific MCP tools