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.

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!

Setup Google API Key Example

# macOS/Linux
  export GOOGLE_API_KEY=""

  # Windows (PowerShell)
  setx GOOGLE_API_KEY ""

UV Runtime

Required to serve the MCP plugin.

Install UV Runtime

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"

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": ""
      }

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.