🧠 MCP Memory Server

Advanced Memory System for Claude Desktop - Transform Claude into an AI assistant with photographic memory using MCP (Model Context Protocol).

✨ What it does

Imagine Claude with persistent memory that:

• 🧠 Remembers everything from your conversations
• 🔍 Automatically retrieves context when you reference past topics
• 🤖 Understands references like "that project", "this company", "he/she"
• 📈 Builds knowledge over time across all your sessions
• 🛠️ Auto-captures results from web searches and other tools

🚀 Quick Start

Prerequisites

• Node.js 18+
• Azure Cosmos DB account
• OpenAI API key
• Claude Desktop

Installation

git clone https://github.com/PlumyCat/mcp-memory-server.git
cd mcp-memory-server
npm install
npm run build

Configuration

1. Environment setup:

cp .env.example .env
# Edit .env with your API keys

2. Claude Desktop configuration:

{
  "mcpServers": {
    "memory": {
      "command": "node",
      "args": ["/path/to/mcp-memory-server/dist/index.js"],
      "cwd": "/path/to/mcp-memory-server"
    }
  }
}

3. Test the magic:

You: "I'm working on a TypeScript project using CosmosDB"
Claude: [Responds normally + automatic background storage]

# Later...
You: "What was that project we discussed?"
Claude: "You mentioned working on a TypeScript project using CosmosDB..."

🎯 Key Features

🧠 Intelligent Memory Storage

• Automatic entity extraction (people, companies, projects, tools)
• Semantic storage with OpenAI embeddings
• Conversation context preservation
• Smart deduplication

🔍 Advanced Search & Retrieval

• Semantic similarity search
• Entity relationship mapping
• Timeline-based retrieval
• Context-aware responses

🤖 Entity Resolution

• Automatic pronoun resolution ("he" → "John Smith")
• Reference understanding ("that company" → "Microsoft")
• Cross-conversation entity linking
• Confidence scoring

📊 Analytics & Insights

• Conversation pattern analysis
• Entity interaction timelines
• Knowledge growth tracking
• Usage statistics

🛠️ Available Tools

The server provides 6 MCP tools for Claude:

Tool	Description	Example Usage
memory_store	Store information with auto entity extraction	Automatically triggered during conversations
memory_search	Semantic search through stored memories	"Find all discussions about React"
context_inject	Get relevant context for current query	"What did we discuss about this project?"
entity_resolve	Resolve references to actual entities	"Who is 'he' referring to?"
conversation_analyze	Analyze conversation patterns	"Show my discussion statistics"
memory_timeline	Get timeline of entity interactions	"Timeline of Microsoft mentions"

📁 Project Structure

mcp-memory-server/
├── src/
│   ├── config/          # Azure Cosmos DB configuration
│   ├── memory/          # Core memory system (RAG, storage, graph)
│   ├── types/           # TypeScript type definitions
│   ├── utils/           # Entity extraction, context injection
│   └── server.ts        # Main MCP server implementation
├── scripts/             # Maintenance and health check scripts
├── tests/               # Unit and integration tests
├── docs/                # Technical documentation
└── dist/                # Compiled JavaScript (generated)

🏗️ Architecture

Core Components

• RAG System: Vector similarity search with OpenAI embeddings
• Entity Extractor: NLP-based entity recognition with custom patterns
• Memory Storage: Optimized CosmosDB integration with smart indexing
• Context Injector: Intelligent context retrieval for conversations
• Graph Engine: Entity relationship mapping and traversal

Data Flow

graph TD
    A[User Message] --> B[Entity Extraction]
    B --> C[Embedding Generation]
    C --> D[CosmosDB Storage]
    D --> E[Semantic Search]
    E --> F[Context Injection]
    F --> G[Enhanced Claude Response]

🔧 Configuration

Environment Variables

# Azure Cosmos DB
COSMOS_ENDPOINT=https://your-account.documents.azure.com:443/
COSMOS_KEY=your-primary-key
COSMOS_DATABASE_NAME=memory-db
COSMOS_CONTAINER_CONVERSATIONS=conversations
COSMOS_CONTAINER_ENTITIES=entities

# OpenAI
OPENAI_API_KEY=your-openai-api-key

# Optional
NODE_ENV=production
LOG_LEVEL=info
MEMORY_RETENTION_DAYS=30

Advanced Configuration

See Configuration Guide for detailed setup options.

🧪 Testing

# Run all tests
npm test

# Health check
npm run health-check

# Test memory functionality
npm run test-memory

📊 Performance

• Storage: Optimized CosmosDB indexing for sub-100ms queries
• Search: Vector similarity with 95%+ accuracy
• Memory: Efficient entity deduplication and compression
• Scalability: Handles 1000+ entities with consistent performance

🛣️ Roadmap

✅ Completed

• Core memory storage and retrieval
• Entity extraction and resolution
• Semantic search with embeddings
• CosmosDB integration
• MCP server implementation

🔄 In Progress

• Intelligent entity deduplication
• Auto-capture of all MCP tool results
• Enhanced entity classification patterns
• Contradiction detection system

🔮 Planned

• Multi-user memory isolation
• Graph traversal with Gremlin queries
• Advanced analytics dashboard
• Memory compression and archiving

See Roadmap for detailed feature planning.

🤝 Contributing

We welcome contributions! Please see our Contributing Guidelines for details.

Development Setup

git clone https://github.com/PlumyCat/mcp-memory-server.git
cd mcp-memory-server
npm install
npm run dev

📚 Documentation

• Usage Guide - Comprehensive usage examples
• API Reference - Detailed API documentation
• Architecture - Technical architecture details
• Troubleshooting - Common issues and solutions

🆘 Support

• 📖 Check the Usage Guide for examples
• 🐛 Report issues on GitHub Issues
• 💬 Discuss on GitHub Discussions

📄 License

This project is licensed under the MIT License - see the LICENSE file for details.

🙏 Acknowledgments

• Model Context Protocol (MCP) for the foundational protocol
• Claude Desktop for the AI assistant platform
• Azure Cosmos DB for scalable data storage
• OpenAI for embedding generation
• Compromise.js for natural language processing

⭐ Star History

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Made with ❤️ for the Claude Desktop community