open-ontologies

mcp-serverStable

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.

GitHub ↗

Stars

185

Δ stars 7d

Δ stars 30d

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Forks

Contributors

npm DL / wk

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PyPI DL / wk

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Language

Rust

Last push

2026-07-10

About open-ontologies

A Terraforming MCP for Knowledge Graphs Validate, classify, and govern AI-generated ontologies. Written in Rust. Ships as a single binary. Quick Start · Studio · Benchmarks · IES · Tools · Architecture · Docs Open Ontologies is a **Rust MCP server** and **desktop Studio** for AI-native ontology engineering. It exposes **70+ tools** that let Claude build, validate, query, diff, lint, version, reason over, align, plan, certify, and govern RDF/OWL ontologies using an in-memory Oxigraph triple store — with a full three-layer Dynamics…

Read the full README on GitHub →

open-ontologies growth signals this week

Gained 7 stars in the last 7 days
4x the median weekly star growth of its category

Growth score: 32/100 week of 2026-06-29

Acceleration (40%)0

Relative velocity (30%)83

Downloads (20%)0

Activity (10%)73

Signal history

Week	Score	Δ★	Signal
2026-06-29	32	+7	Stable
2026-06-15	78	+9	Stable

open-ontologies alternatives

Projects in the same category, closest in size — picked by data, not opinion.

isaacwasserman/mcp-snowflake-serverStable185 ★

alexei-led/aws-mcp-serverStable185 ★

Quick-start Auto MCPStable185 ★

veelenga/claude-mermaidStable186 ★

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Frequently asked questions

Is open-ontologies still maintained?: Yes — actively maintained. The last push was on 2026-07-10, with 4 contributors.
Is open-ontologies growing?: It is stable this week, with a growth score of 32/100. See the weekly history above.
What are the best open-ontologies alternatives?: Closest by category and size in our data: isaacwasserman/mcp-snowflake-server, alexei-led/aws-mcp-server, Quick-start Auto MCP — full list with live signals above.

Topics

Knowledge Graphs mcp mcp-server claude knowledge-graph rust ai-native description-logics linked-data ontology owl owl2 oxigraph reasoning shacl sparql triplestore

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Tracked since 2026-06-17 · data as of 2026-07-10 · 2 open issues · 5 releases