Open Ontologies MCP Server

Example Use Cases

• 1

  Build, validate, and reason over AI-generated ontologies.

• 2

  Manage ontology lifecycle with Terraform-style workflows and versioning.

• 3

  Query, align, and enrich ontologies with semantic embeddings and clinical crosswalks.

Description

Open Ontologies is a Rust MCP server and desktop Studio that enables AI agents to build, validate, classify, query, and govern RDF/OWL ontologies using an in-memory Oxigraph triple store. It offers 48 tools for ontology lifecycle management, reasoning, semantic embeddings, and versioning, wrapped in a visual desktop app with 3D graph visualization and AI chat. The server supports Terraform-style change management, a marketplace of 29 standard ontologies, clinical crosswalks, and a full audit trail, all without requiring JVM or Protégé.