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Add Cortex — persistent, ontology driven knowledge system with OWL-RL reasoning#3911

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abbacusgroup wants to merge 1 commit intomodelcontextprotocol:mainfrom
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Add Cortex — persistent, ontology driven knowledge system with OWL-RL reasoning#3911
abbacusgroup wants to merge 1 commit intomodelcontextprotocol:mainfrom
abbacusgroup:main

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@abbacusgroup
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@abbacusgroup abbacusgroup commented Apr 11, 2026

Description

Cortex is a persistent, ontology-driven knowledge system for AI agents with formal OWL-RL reasoning, SPARQL graph + SQLite dual store, and 22 MCP
tools.

  • Local-first, runs from ~/.cortex/
  • Hybrid retrieval (keyword + semantic + graph + recency)
  • Zero LLM dependency for core operations
  • 1,010 tests, Python 3.12+

GitHub: https://github.com/abbacusgroup/cortex
Website: https://abbacus.ai/cortex

Publishing Your Server

Note: We are no longer accepting PRs to add servers to the README. Instead, please publish your server to the MCP Server Registry to make it discoverable to the MCP ecosystem.

To publish your server, follow the quickstart guide. You can browse published servers at https://registry.modelcontextprotocol.io/.

Server Details

  • Server:
  • Changes to:

Motivation and Context

How Has This Been Tested?

Breaking Changes

Types of changes

  • Bug fix (non-breaking change which fixes an issue)
  • New feature (non-breaking change which adds functionality)
  • Breaking change (fix or feature that would cause existing functionality to change)
  • Documentation update

Checklist

  • I have read the MCP Protocol Documentation
  • My changes follows MCP security best practices
  • I have updated the server's README accordingly
  • I have tested this with an LLM client
  • My code follows the repository's style guidelines
  • New and existing tests pass locally
  • I have added appropriate error handling
  • I have documented all environment variables and configuration options

Additional context

@akuckartz
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That GitHub page does not exist.

@abbacusgroup
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That GitHub page does not exist.

I forgot to make public. Its up and running now.

@akuckartz
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The "Business Source License 1.1" (https://github.com/abbacusgroup/Cortex/blob/main/LICENSE) unfortunately is not an Open Source license.

@olaservo
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Thanks for your interest in contributing! We are no longer accepting PRs to add server or framework listings to this README. Please publish your server to the MCP Server Registry instead — you can follow the quickstart guide to get listed.

See our CONTRIBUTING.md for what kinds of PRs we do accept (bug fixes, usability improvements, MCP protocol feature demos).

Closing this PR — but we'd love to see your server on the Registry!


This review was assisted by Claude Code.

@olaservo olaservo closed this Apr 12, 2026
@abbacusgroup
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abbacusgroup commented Apr 13, 2026 via email

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3 participants