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MCP servers tagged ontology
89 live MCP servers tagged "ontology", ranked by trust score. Tags come from package metadata and repository topics, so this list covers servers across every category that work with ontology.
AI Tool Watch
Evidence-backed reference for AI capabilities, pricing tiers, availability, and platform support across ChatGPT, Claude, Gemini, Copilot, and more.
TheStack-ai/waypath
aware recall via FTS5 and RRF, and governed memory with explicit promote and review gates. Ships Codex and Claude Code host shims and a native MCP server.
Knowledge As Code Template
A template for building structured, self-healing, agent-accessible knowledge bases. Zero dependencies. Git-native. Ontology-driven. Multi-output.
Ontology Atlas
Local-first ontology memory for plain Codex/Claude Code via Atlas MCP/CLI: product meaning, code evidence, verification paths.
liftkkkk/owl-mcp
MCP server for OWL/TTL/RDF ontologies. Supports SPARQL queries, HermiT/Pellet reasoning, and CRUD operations on knowledge graphs. Works with Claude Desktop, Cursor, and Windsurf.
Protege MCP
An MCP (Model Context Protocol) server for Protégé Desktop: exposes the live, active ontology to MCP clients (Claude Code, Codex, …) and edits it through Protégé's shared OWLModel…
Daydreamer
The Future Remembers
Biomedical Terminology Service
The BioMedical Terminology Service (BTS) is a self-hosted platform that provides one API for searching, traversing, mapping and semantically comparing concepts across major biomed…
Mondo Link
MCP server for the Mondo Disease Ontology: disease term lookup, the is_a hierarchy, and cross-ontology mapping across OMIM, Orphanet, DOID, NCIT, UMLS and MeSH.
Irontology MCP
irontology - a memory safe rust Inference Runtime Ontology
Business Ontology
Agent skill and reference runtime for maintaining a git-backed business ontology: source intake, review gates, evals, and MCP/GBrain boundaries.
Cassis Demo Stallora
Try Cassis headless from your own agent: ask over MCP, pull the ontology, prove a change with the CLI, publish by merging a pull request. Runs on a sample marketplace warehouse.
Binelek MCP Server
Model Context Protocol (MCP) server for Binelek Platform - 18 tools for knowledge graph interaction
Aryx
Aryx Lite — multi-source entity resolution & knowledge graph for grounded Q&A. Postgres + FalkorDB. BSL 1.1.
Knowledge Structuring
Multi-campaign skill repo for structured knowledge construction — ontology building, causal modeling, dimensional analysis, argument mapping.
AI MCP Multi Agent Oosdk Public
Ontology-driven multi-agent platform — business policy as code (ontology.yaml) driving order-to-cash end to end across Salesforce and Odoo ERP.
Obsidian Open Ontologies
Full Open Ontologies engine in Obsidian: reason over, SHACL-check and SPARQL-query your vault as a knowledge graph, and expose it to Claude over MCP
Mimir AIP Go
Go rewrite of the Mimir-AIP framework, focusing on building an ontology backed data aggregation, processing and analysis toolkit
Antoniofigueroa Ontology Lite
Public lite version of a personal multi-disciplinary ontology spanning forensic accounting, integrated data science, and valuation. Licensed under CC BY-NC-SA 4.0
Binelek Vscode Extension
VS Code extension for Binelek Platform - Integrated knowledge graph development tools
Loom Ontology
Declarative ontology framework over Apache Iceberg, wired to LLM agents via MCP
Visual Scene Ontology
An image is not a sentence: a VLM's description of one is unvalidated prose. VSON makes every claim about an image — object, property, spatial relation, action — a graph assertion…
CASE UCO SDK
Multi-language SDK (Python, C#, Java, Rust) for building validated CASE/UCO JSON-LD graphs for digital forensics and cyber-investigation. AI-agent ready with MCP server. Support f…
Pvcollada Onto
OWL 2 ontology for the PV-Collada 2.0 schema, aligned with MDS-Onto. Includes local Oxigraph SPARQL endpoint and MCP server for Claude agent integration.
Aging Knowledge Graph
An open, evidence-traceable knowledge graph for healthy aging — Postgres + pgvector, REST + MCP API, natural-language search, and Claude-powered curator/reviewer agents.
Mcpdbhub
Read-only MCP database hub in Go: 18 databases, shared business ontologies, source mappings, verified query templates, OAuth and OTLP audit logs.
Somatic
The somatic vocabulary for AI agents. 29 zones, 20 qualities, 16 territories. MCP integration.
Ontological GraphRAG Recommender
a knowledge-graph and RAG system that extracts requirements into neo4j, queryable through an ollama and MCP chat client with RL tuned retrieval strategies.
Fabric Cowork Ontology Demo
Ontology-grounded agent pattern: Microsoft Fabric IQ ontology, Fabric Data Agent, MCP bridge and a Microsoft 365 Copilot (Cowork) plugin
Document Systems
Content-addressed document ontology, validation, and rendering plugin for Codex
Acsac ANCHOR
ACSAC artifact for ANCHOR: schema-agnostic CTI knowledge graph construction via hybrid ontology discovery (UCO / STIX / MALOnt). Requested badges: Available, Functional.
Envri MCP Connector
Euro-Argo float metadata + OSO ontology in one Elasticsearch index, embedded for RAG and served via an HTTP API and an MCP server.
Sap Nexus Agent
Capability-ontology-driven SAP capability supplier. One call answers one business question; endpoint chains, as-of consistency and approvals are enforced server-side. Orchestratio…
Metaseed Hub
Shared, multi-tenant web application for creating, editing, sharing, and publishing standardized research metadata (MIAPPE, ISA, DiSSCo, Darwin Core, FAIRDOM-SEEK), built on metas…
Monarch MCP
MCP server for Monarch Initiative Data
Orphanet Link
MCP server for Orphanet (Orphadata): rare-disease nomenclature, gene–disease associations, phenotypes, epidemiology and cross-references, from the Orphadata scientific knowledge f…
Knowledge Layer
Open source, self-hosted semantic layer and knowledge graph for AI agents. Evidence-backed definitions, human review, and reusable MCP context.
Operational Ontology
A minimal, readable reference implementation of the Operational Ontology pattern. Palantir Foundry is one implementation; this is the concept, minimized.
Operational Ontology
A minimal, readable reference implementation of the Operational Ontology pattern. Palantir Foundry is one implementation; this is the concept, minimized.