knowledge-graph-system

knowledge-graph-system is an MCP server by aaronsb. Kappa Graph — κ(G). A semantic knowledge graph where knowledge has weight. Extracts concepts, measures grounding strength, preserves disagreement, traces everything to source. It has 129 GitHub stars and ranks #301 of 1287 in Memory & Knowledge by stars.

Category: Memory & Knowledge
Author: aaronsb
GitHub stars: 129
This week: Tracking since 18 Oct 2026
Language: Python
License: Apache-2.0 (open source)
Last update: 2026-10-02 (22 days ago)
Links: Source Website

apache-age
concept-extraction
docker
fastapi
graph-database
knowledge-graph
mcp-server
nlp
postgresql
semantic-search

How to install knowledge-graph-system

Install steps differ per project, so follow the README in the knowledge-graph-system repository. Most MCP servers start with a single command (npx -y <package>, uvx <package> or a Docker image) that you add to your client's config. The install guide shows where that goes in Claude Code, Claude Desktop, Cursor and VS Code.

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Frequently asked questions

What is knowledge-graph-system?

knowledge-graph-system is an MCP server by aaronsb in the Memory & Knowledge category. Kappa Graph — κ(G). A semantic knowledge graph where knowledge has weight. Extracts concepts, measures grounding strength, preserves disagreement, traces everything to source. It has 129 GitHub stars and ranks #301 of 1287 in Memory & Knowledge by stars.

Is knowledge-graph-system free and open source?

Yes. knowledge-graph-system is published under the Apache-2.0 license, so you can run, modify and self-host it at no cost. If it connects to a paid service, that service's own pricing and API terms still apply. Check the repository for the exact license text before using it commercially.

What are the alternatives to knowledge-graph-system?

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