Paths Tree Generator MCP Server

This repository contains a minimal Model Context Protocol server that exposes one tool – paths_to_tree – which converts a flat list of filesystem paths into a JSON directory tree.

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Quick-start

1. Install dependencies

A Python ≥ 3.9 interpreter is required. It's best to work inside a virtual-env:

python -m venv .venv
source .venv/bin/activate
pip install -r requirements.txt

2. Run the server

There are two common ways to launch it:

# a) Development mode – auto-reload & web inspector
mcp dev main.py

# b) Plain stdio mode – good for Cursor / Claude Desktop integrations
python main.py

When started with mcp dev the MCP Inspector will open at http://localhost:6274/ and allow you to invoke the tool from the browser.

Tool API

paths_to_tree(paths: list[str]) -> str

Example invocation

[
  "config/webpack.config.js",
  "components/Modal",
  "components/Form",
  "components/Table",
  "pages/home",
  "pages/app",
  "pages/help",
  "package.json",
  "package-lock.json"
]

Response

project-root
├── components
│   ├── Form
│   ├── Modal
│   └── Table
├── config
│   └── webpack.config.js
├── pages
│   ├── app
│   ├── help
│   └── home
├── package-lock.json
└── package.json

Using the server in Cursor or Claude Desktop

Add an entry to your MCP configuration (examples shown for Cursor):

{
  "mcpServers": {
    "paths-tree": {
      "command": "/absolute/path/to/python",
      "args": ["/absolute/path/to/main.py"]
    }
  }
}

Restart your host application and the paths_to_tree tool will be available for use.

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Feel free to extend the project with additional tools (e.g. serialisation to Markdown, filtering, etc.) – just decorate functions with @mcp.tool() and they will automatically be exposed through MCP.