MCP Mem0 MCP Server

Mem0 MCP Server provides persistent long-term memory capabilities for AI agents, enabling them to store, retrieve, and search memories across sessions using semantic search. Key features of Mem0 MCP Server: - **save_memory**: Store any information in long-term memory with semantic indexing for intelligent retrieval - **get_all_memories**: Retrieve all stored memories to provide comprehensive context to AI agents - **search_memories**: Find relevant memories using semantic search and embeddings - Vector storage backed by PostgreSQL or Supabase for scalable memory persistence - Support for multiple LLM providers including OpenAI, OpenRouter, and Ollama - Integration with embedding models (e.g., text-embedding-3-small) for semantic memory indexing

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!

Overview

This project demonstrates how to build an MCP server that enables AI agents to store, retrieve, and search memories using semantic search. It serves as a practical template for creating your own MCP servers, simply using Mem0 and a practical example.

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

Features

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

Prerequisites

Installation

Using uv

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)

Using Docker (Recommended)

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

Configuration

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

| Variable | Description | Example | |----------|-------------|----------| | TRANSPORT | Transport protocol (sse or stdio) | sse | | HOST | Host to bind to when using SSE transport | 0.0.0.0 | | PORT | Port to listen on when using SSE transport | 8050 | | LLM_PROVIDER | LLM provider (openai, openrouter, or ollama) | openai | | LLM_BASE_URL | Base URL for the LLM API | https://api.openai.com/v1 | | LLM_API_KEY | API key for the LLM provider | sk-... | | LLM_CHOICE | LLM model to use | gpt-4o-mini | | EMBEDDING_MODEL_CHOICE | Embedding model to use | text-embedding-3-small | | DATABASE_URL | PostgreSQL connection string | postgresql://user:pass@host:port/db |

Running the Server

Using uv

#### SSE Transport

# 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.

#### Stdio Transport

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

Using Docker

#### SSE Transport

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.

#### Stdio Transport

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

Integration with MCP Clients

SSE Configuration

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.

Python with Stdio Configuration

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

```json { "mcpServers": { "mem0": { "command": "your/path/to/mcp-mem0/.venv/Scripts/python.exe", "args": ["your/path/to/mcp-mem0/src/main.py"], "env": { "TRANSPORT": "stdio", "LLM_PROVIDER": "openai", "LLM_BASE_URL": "https://api.openai.