AI assistants#Agents#Long context
OpenCrab
An ontology-first Graph RAG platform that structures disparate documentation into verifiable, reusable knowledge packs for autonomous agents.
Product facts
Commercial Suite- Pricing
- Freemium / Subscription
- Data checked
- 2026-09-25
Capabilities
- Graph RAG enhanced retrieval
- Model Context Protocol (MCP) integration
- 9-space meta-ontology extraction
- Multi-format unstructured ingestion
Snapshot figures reflect the check date and may change over time.
OpenCrab is an ontology-first knowledge organization and graph retrieval platform designed for the AI agent era.
Core Purpose
It allows domain experts and developers to convert unstructured PDFs, Notion pages, and technical repositories into verifiable knowledge packs queryable by AI agents.
Key Scenarios
- Complex Literature Ingestion: High-precision question answering backed by traceable ontological citations.
- Enterprise Grounding: Unified endpoints feeding consistent domain facts into Claude Code and Cursor.