MCP Memory Server

MCP Memory Server

A Model Context Protocol (MCP) server for Claude Desktop that provides structured memory management across chat sessions, specifically designed for project-based work.

Project-Focused Memory Management

This MCP server is specifically designed to help Claude maintain context and knowledge within project directories when used with Claude Desktop. It allows Claude to:

• Create a memory store within your project directory
• Save important information discovered during conversations
• Retrieve relevant memories in future sessions
• Build a comprehensive knowledge base about your project over time

This approach is ideal for long-term projects where maintaining context between sessions is crucial, such as software development, research, writing, or any collaborative work with Claude.

Features

• Store memories as structured markdown files
• Index memories using Lunr.js for efficient retrieval
• Tag and categorize memories
• Create relationships between memories
• Search memories by content, tags, or type
• Build memory stores in specified directories

Memory Structure

Memories are stored in a hierarchical structure within your project:

/your-project-directory
  /memory                # Memory store created by Claude
    /entities/           # Information about specific entities (people, projects, etc.)
    /concepts/           # Abstract concepts or knowledge
    /sessions/           # Session-specific memories
    /index.json          # Lunr.js search index
    /metadata.json       # Overall memory metadata
    /README.md           # Auto-generated documentation

This structure keeps all project-related memories organized and accessible within your project directory.

Usage with Claude Desktop

Add this to your claude_desktop_config.json:

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

You can also set a custom memory directory using an environment variable:

{
  "mcpServers": {
    "memory": {
      "command": "node",
      "args": ["path/to/mcp-memory/dist/index.js"],
      "env": {
        "MEMORY_DIR": "/path/to/custom/memory/directory"
      }
    }
  }
}

Project Workflow

1. Setup: When starting a new project with Claude, have it create a memory store in your project directory
2. Ongoing Work: As you work with Claude, it will save important information to the memory store
3. Continuity: In future sessions, Claude can retrieve relevant memories to maintain context
4. Knowledge Building: Over time, Claude builds a comprehensive knowledge base about your project

This workflow ensures that Claude maintains context and knowledge specific to each project, making it more effective as a long-term collaborator.

Claude Project Instructions

This repository includes an instructions_template.md file that provides a comprehensive template for Claude project instructions. You can customize this template for your specific projects to help Claude effectively use the memory system.

The template includes:

• Memory system setup instructions
• Memory retrieval process
• Memory creation guidelines
• Memory organization system
• Memory maintenance procedures
• Conversation workflow
• Best practices

Development

# Install dependencies
npm install
 
# Build the project
npm run build
 
# Start the server
npm start
 
# Development mode (watch for changes)
npm run dev

Implementation Details

This server is built using:

• The official Model Context Protocol (MCP) SDK
• TypeScript for type safety
• Lunr.js for memory indexing and search
• Zod for schema validation

License

MIT