cff-version: 1.2.0 message: "If you use Open Ontologies in your research, please cite the paper below." title: "Open Ontologies" abstract: >- An AI-native ontology engine: a Rust MCP server with tools for building, validating, querying, reasoning over, aligning, planning, and governing RDF/OWL ontologies, backed by an in-memory Oxigraph triple store and a three-layer Dynamics to Causal to Planner architecture. type: software authors: - family-names: Rovai given-names: Fabio repository-code: "https://github.com/fabio-rovai/open-ontologies" license: MIT keywords: - knowledge-graph - ontology - rdf - owl - sparql - shacl - mcp - model-context-protocol - ontology-alignment - causal-inference # Cite this paper when referencing the system. preferred-citation: type: article title: "Open Ontologies: Tool-Augmented Ontology Engineering with Stable Matching Alignment" authors: - family-names: Rovai given-names: Fabio year: 2026 month: 5 identifiers: - type: other value: "arXiv:2605.09184" description: arXiv preprint doi: 10.48550/arXiv.2605.09184 url: "https://arxiv.org/abs/2605.09184" # Further reading: the causal-verification foundation of the Causal layer. references: - type: article title: "CIVeX: Causal Intervention Verification for Language Agents" authors: - family-names: Rovai given-names: Fabio year: 2026 month: 5 identifiers: - type: other value: "arXiv:2605.09168" description: arXiv preprint doi: 10.48550/arXiv.2605.09168 url: "https://arxiv.org/abs/2605.09168"