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Memory-Plus

A lightweight, local Retrieval-Augmented Generation (RAG) memory store for MCP agents. Memory-Plus lets your agent record, retrieve, update, and visualize persistent "memories"—notes, ideas, and session context—across runs.

🏆 First Place at the Infosys Cambridge AI Centre Hackathon!

Key Features

• Record Memories：Save user data, ideas, and important context.
• Retrieve Memories：Search by keywords or topics over past entries.
• Recent Memories：Fetch the last N items quickly.
• Update Memories：Append or modify existing entries seamlessly.
• Visualize Memories：Interactive graph clusters revealing relationships.
• File Import (since v0.1.2)：Ingest documents directly into memory.
• Delete Memories (since v0.1.2)：Remove unwanted entries.
• Memory for Memories (since v0.1.4)：Now we use resources to teach your AI exactly when (and when not) to recall past interactions.
• Memory Versioning (since v0.1.4)：When memories are updated, we keep the old versions to provide a full history.

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Installation

1. Prerequisites

Google API Key Obtain from Google AI Studio and set as GOOGLE_API_KEY in your environment.

Note that we will only use the Gemini Embedding API with this API key, so it is Entirely Free for you to use! <details> <summary><b>Setup Google API Key Example</b></summary>

# macOS/Linux
export GOOGLE_API_KEY="<YOUR_API_KEY>"

# Windows (PowerShell)
setx GOOGLE_API_KEY "<YOUR_API_KEY>"

</details>

UV Runtime Required to serve the MCP plugin. <details> <summary><b>Install UV Runtime</b></summary>

pip install uv

Or install via shell scripts:

# macOS/Linux
curl -LsSf https://astral.sh/uv/install.sh | sh

# Windows (PowerShell)
powershell -ExecutionPolicy ByPass -c "irm https://astral.sh/uv/install.ps1 | iex"

</details>

VS Code One-Click Setup

Click the badge below to automatically install and configure Memory-Plus in VS Code:

This will add the following to your settings.json:

  {
    "mcpServers": {
      //...,  your other MCP servers
      "memory-plus": {
        "command": "uvx",
        "args": [
          "-q",
          "memory-plus@latest"
        ],
      }
    }
  }

For cursor, go to file -> Preferences -> Cursor Settings -> MCP and add the above config. If you didn't add the GOOGLE_API_KEY to your secrets / environment variables, you can add it with:

"env": {
        "GOOGLE_API_KEY": "<YOUR_API_KEY>"
      }

just after the args array with in the memory-plus dictionary.

For Cline add the following to your cline_mcp_settings.json:

{
  "mcpServers": {
    //...,  your other MCP servers
    "memory-plus": {
      "disabled": false,
      "timeout": 300,
      "command": "uvx",
      "args": [
        "-q",
        "memory-plus@latest"
      ],
      "env": {
        "GOOGLE_API_KEY": "${{ secrets.GOOGLE_API_KEY }}"
      },
      "transportType": "stdio"
    }
  }
}

For other IDEs it should be mostly similar to the above.

Local Testing and Development

Using MCP Inspector, you can test the memory-plus server locally.

git clone https://github.com/Yuchen20/Memory-Plus.git
cd Memory-Plus
npx @modelcontextprotocol/inspector fastmcp run run .\\memory_plus\\mcp.py

Or If you prefer using this MCP in an actual Chat Session. There is a template chatbot in agent.py.

# Clone the repository
git clone https://github.com/Yuchen20/Memory-Plus.git
cd Memory-Plus

# Install dependencies
pip install uv
uv pip install fast-agent-mcp
uv run fast-agent setup        

setup the fastagent.config.yaml and fastagent.secrets.yaml with your own API keys.

# Run the agent
uv run agent_memory.py

RoadMap

• [x] Memory Update
• [x] Improved prompt engineering for memory recording
• [x] Better Visualization of Memory Graph
• [x] File Import
• [ ] Remote backup!
• [ ] Web UI for Memory Management

If you have any feature requests, please feel free to add them by adding a new issue or by adding a new entry in the Feature Request

License

This project is licensed under the Apache License 2.0. See LICENSE for details.

FAQ

1. Why is memory-plus not working?

• Memory-plus has a few dependencies that can be slow to download the first time. It typically takes around 1 minute to fetch everything needed.
• Once dependencies are installed, subsequent usage will be much faster.
• If you experience other issues, please feel free to open a new issue on the repository.

2. How do I use memory-plus in a real chat session?

• Simply add the MCP JSON file to your MCP setup.
• Once added, memory-plus will automatically activate when needed.