MCP-Mem0: Long-Term Memory for AI Agents

A template implementation of the Model Context Protocol (MCP) server integrated with Mem0 for providing AI agents with persistent memory capabilities.

Use this as a reference point to build your MCP servers yourself, or give this as an example to an AI coding assistant and tell it to follow this example for structure and code correctness!

This project demonstrates how to build an MCP server that enables AI agents to store, retrieve, and search memories using semantic search. It uses the hosted Mem0 Cloud platform via API key for persistence.

The implementation follows the best practices laid out by Anthropic for building MCP servers, allowing seamless integration with any MCP-compatible client.

The server provides three essential memory management tools:

1. save_memory: Store any information in long-term memory with semantic indexing
2. get_all_memories: Retrieve all stored memories for comprehensive context
3. search_memories: Find relevant memories using semantic search

All tools accept a memory_type parameter so you can keep separate categories for regular memories and notes. Pass memory_type="note" to store and search notes, otherwise the default memory category is used.

save_memory also accepts message_number and date parameters, which are stored as metadata alongside the text for later reference.

• Python 3.12+
• A Mem0 Cloud account and API key
• Docker if running the MCP server as a container (recommended)

1. Install uv if you don't have it:

   pip install uv

2. Clone this repository:

   git clone https://github.com/coleam00/mcp-mem0.git
   cd mcp-mem0

3. Install dependencies:

   uv pip install -e .

4. Create a .env file based on .env.example:

   cp .env.example .env

5. Configure your environment variables in the .env file (see Configuration section)

1. Build the Docker image:

   docker build -t mcp/mem0 --build-arg PORT=8050 .

2. Create a .env file based on .env.example and configure your environment variables

The following environment variables can be configured in your .env file:

# Set TRANSPORT=sse in .env then:
uv run src/main.py

The MCP server will essentially be run as an API endpoint that you can then connect to with config shown below.

With stdio, the MCP client iself can spin up the MCP server, so nothing to run at this point.

docker run --env-file .env -p:8050:8050 mcp/mem0

The MCP server will essentially be run as an API endpoint within the container that you can then connect to with config shown below.

With stdio, the MCP client iself can spin up the MCP server container, so nothing to run at this point.

Once you have the server running with SSE transport, you can connect to it using this configuration:

{
  "mcpServers": {
    "mem0": {
      "transport": "sse",
      "url": "http://localhost:8050/sse"
    }
  }
}

Note for Windsurf users: Use serverUrl instead of url in your configuration:

{
  "mcpServers": {
    "mem0": {
      "transport": "sse",
      "serverUrl": "http://localhost:8050/sse"
    }
  }
}

Note for n8n users: Use host.docker.internal instead of localhost since n8n has to reach outside of it's own container to the host machine:

So the full URL in the MCP node would be: http://host.docker.internal:8050/sse

Make sure to update the port if you are using a value other than the default 8050.

Add this server to your MCP configuration for Claude Desktop, Windsurf, or any other MCP client:

{
  "mcpServers": {
    "mem0": {
      "command": "your/path/to/mcp-mem0/.venv/Scripts/python.exe",
      "args": ["your/path/to/mcp-mem0/src/main.py"],
      "env": {
        "TRANSPORT": "stdio",
        "MEM0_API_KEY": "YOUR-MEM0-API-KEY",
        "MEM0_BASE_URL": "https://api.mem0.ai"
      }
    }
  }
}

{
  "mcpServers": {
    "mem0": {
      "command": "docker",
      "args": ["run", "--rm", "-i",
               "-e", "TRANSPORT",
               "-e", "MEM0_API_KEY",
               "-e", "MEM0_BASE_URL",
               "mcp/mem0"],
      "env": {
        "TRANSPORT": "stdio",
        "MEM0_API_KEY": "YOUR-MEM0-API-KEY",
        "MEM0_BASE_URL": "https://api.mem0.ai"
      }
    }
  }
}

This template provides a foundation for building more complex MCP servers. To build your own:

1. Add your own tools by creating methods with the @mcp.tool() decorator
2. Create your own lifespan function to add your own dependencies (clients, database connections, etc.)
3. Modify the utils.py file for any helper functions you need for your MCP server
4. Feel free to add prompts and resources as well with @mcp.resource() and @mcp.prompt()