How do I install Mmm ?

Mmm is a local plugin. Install it using npm package: mmm-mcp-server and add the generated configuration snippet to your AI app's MCP config file. Then restart your AI app.

Mmm was flagged by MCP Marketplace's security scan, scoring 4.9/10 (high risk). It has 4 high or critical findings to review. Review the security report on this page carefully before installing it.

What AI apps work with Mmm ?

Mmm uses the Model Context Protocol (MCP) and works with any MCP-compatible AI app, including Claude, ChatGPT / Codex, Gemini, Copilot, Cursor, and more.

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Mmm MCP Server

by Nhorie Canal

Developer ToolsUse Caution4.9MCP RegistryLocal

Free

Server data from the Official MCP Registry

Read and write your Matryoshka Mind Map (nested mind map / TODO app) from AI agents.

About

Read and write your Matryoshka Mind Map (nested mind map / TODO app) from AI agents.

Security Report

4.9

Use Caution4.9High Risk

Valid MCP server (2 strong, 3 medium validity signals). 1 code issue detected. 6 known CVEs in dependencies (0 critical, 4 high severity) Package registry verified. Imported from the Official MCP Registry. 1 finding(s) downgraded by scanner intelligence.

11 files analyzed · 8 issues found

Security scores are indicators to help you make informed decisions, not guarantees. Always review permissions before connecting any MCP server.

Permissions Required

This plugin requests these system permissions. Most are normal for its category.

file_system

Check that this permission is expected for this type of plugin.

HTTP Network Access

Connects to external APIs or services over the internet.

Shell Command Execution

Runs commands on your machine. Be cautious — only use if you trust this plugin.

How to Install

Add this to your MCP configuration file:

{
  "mcpServers": {
    "io-github-nhorie-canal-mmm-mcp-server": {
      "args": [
        "-y",
        "mmm-mcp-server"
      ],
      "command": "npx"
    }
  }
}

Documentation

View on GitHub

From the project's GitHub README.

Matryoshka Mind Map MCP Server

English | 日本語

Talk to your AI agent, and it reads and writes your nested mind maps and TODOs in Matryoshka Mind Map.

Asking an AI agent to plan a trip fills a Matryoshka map, and "I booked the hotel" checks it off

Get the app (free to start): Web app · App Store · Google Play

What you can do

"Show me my maps" — lists your maps
Turn ideas from the conversation into a nested mind map
"I finished task X" — checks it off your TODO list
Paste long notes or Markdown and import them into a map
Save notes from the conversation as a Markdown document inside a map, and read it back later

Get started

You need a Matryoshka account linked to Google, Apple, or an email address (anonymous-only accounts cannot be used).

Claude Desktop (no terminal needed)

Download mmm-mcp-server.mcpb and double-click it, then click Install in Claude Desktop.
Say "Sign in to Matryoshka". A browser window opens: approve with Google or Apple, or enter your email and password on the sign-in page (it runs only on your computer; your password is never shared with the AI).
Talk to it:
- "Show me my Matryoshka maps."
- "Add a task called [task] to the [map name] map."
- "Import these notes into the [map name] map."

The first time a map's contents are read, Claude asks for your permission.

Claude Code and other MCP clients

Requires Node.js 18+. New to the terminal? Follow the step-by-step setup guide.

Claude Code:

claude mcp add mmm -- npx -y mmm-mcp-server@latest

Other MCP clients: register npx -y mmm-mcp-server@latest as the server command.

Then ask the agent to sign in to Matryoshka, or sign in from the terminal with the method you use in the app (google, apple, or email):

npx -y -p mmm-mcp-server@latest mmm-login login --method google

Privacy

Runs only on your computer, only while you talk to your agent. No always-on server.
Your login is stored only on your computer, and your maps are read and written directly in your own account. The developer never views the contents of your maps.
To understand usage, on days the server writes to your maps it records only the date and a count of days in your account (never titles or contents).

Tips and advanced use — keeping maps tidy, recording tasks per folder, updating, troubleshooting.

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4.8

Local

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