Cozo Memory MCP server

CozoDB Memory MCP Server

Why Cozo Memory?

LLMs have short-term memory limits. Standard RAG retrieves documents but can't connect facts across time. Cozo Memory gives your AI agent persistent, structured memory – it remembers past conversations, infers relationships, detects contradictions, and explores its knowledge graph – fully on your machine, with optional local LLM integration via Ollama for intelligent actions (cleanup, reflection, summarization, agentic routing).

Most memory stacks combine separate databases: SQLite for facts, Chroma for vector search, NetworkX for graphs. CozoDB replaces all of that with one embedded engine: relational, graph, vector, and full-text search in a single query language, one file, zero sync lag.

Local-first memory for Claude & AI agents with hybrid search, Graph-RAG, and time-travel – runs entirely on your machine. Optional Ollama integration enables LLM-powered actions (cleanup, reflect, summarize, agentic retrieval).

Table of Contents

• Quick Start
• Key Features
• Positioning & Comparison
• Installation
• Integration
• Documentation
• Troubleshooting

Quick Start

Option 1: Install via npm (Recommended)

# Install globally
npm install -g cozo-memory

# Or run directly with npx (no installation needed)
npx cozo-memory

Option 2: Build from Source

git clone https://github.com/tobs-code/cozo-memory
cd cozo-memory
npm install && npm run build
npm run start

Now add the server to your MCP client (e.g. Claude Desktop) – see Integration below.

Key Features

🔍 Hybrid Search - Combines semantic (HNSW), full-text (FTS), and graph signals via Reciprocal Rank Fusion for intelligent retrieval

🧠 Agentic Retrieval - Auto-routing engine analyzes query intent via local LLM to select optimal search strategy (Vector, Graph, or Community)

⏱️ Time-Travel Queries - Version all changes via CozoDB Validity; query any point in history with full audit trails

🎯 GraphRAG-R1-Inspired Adaptive Retrieval - Intelligent system with Progressive Retrieval Attenuation (PRA) and Cost-Aware F1 (CAF) scoring, conceptually inspired by GraphRAG-R1 (Yu et al., WWW 2026) and adapted for CozoDB, that learns from usage

⏳ Temporal Conflict Resolution - Automatic detection and resolution of contradictory observations with semantic analysis and audit preservation

🏠 100% Local - Embeddings via ONNX/Transformers; data stays on your machine. Some advanced features (cleanup, reflect, summarize, agentic search) require an optional Ollama service for local LLM inference — but the core search, CRUD, and graph operations work without any LLM.

🧠 Multi-Hop Reasoning - Logic-aware graph traversal with vector pivots for deep relational reasoning

🗂️ Hierarchical Memory - Multi-level architecture (L0-L3) with intelligent compression and LLM-backed summarization

→ See all features | Version History

Positioning & Comparison

Why CozoDB instead of SQLite + Chroma + NetworkX?

A common first question is: "Why not just combine existing tools?"

Shortened. The full README is on GitHub.