ThHanke/ontosphere
View on GitHub ↗Browser-based RDF/ontology knowledge graph editor — load RDF from files, URLs or SPARQL endpoints; author nodes and edges on the canvas; run OWL-RL reasoning; apply multi-algorithm layout and clustering. AI-native via MCP tool surface and relay bridge. Fully client-side, no backend required.
165 ★28 forksTypeScriptUpdated 1mo ago
What you need to know
Browser-based RDF knowledge-graph editor with client-side OWL 2 DL reasoning and an MCP server exposing 43 graph tools for AI agents.
Install
Self-hostable; a live demo is available.
Usage
- •Open the app in a browser; agents interact through the MCP tool set.
Key features
- ✓client-side OWL 2 DL reasoning (Konclude WASM)
- ✓reasoner-verified repair
- ✓43 MCP tools
- ✓100% client-side React 19 / TypeScript / WASM
Best for
Building and repairing OWL ontologies with AI assistance
Platforms: browser
Reviewed 2026-08-11
Topics
fair-datagraph-editorjson-ldknowledge-graphlinked-datamcpmodel-context-protocolontologyowlrdfreactodiareasoningsemantic-websparqlturtlevisualization
- Stars
- 165★
- Forks
- 28
- Language
- TypeScript
- License
- NOASSERTION
- Created
- 2025-09-03
- Last push
- 2026-07-23