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Tool connections (MCP)

MCP Reference Servers

modelcontextprotocol/servers

Official MCP reference examples, with a Filesystem server for working inside folders you explicitly allow.

Install

macOS / Linux · Claude Desktop configuration fileConfiguration to paste

This installs Filesystem · Node.js 24+

Use a macOS or Linux terminal for these commands.
Install Node.js and npm first; follow the project’s required version.
Merge into the existing configuration; keep other tools and settings.
Replace the placeholder values below before running or saving.
Save the configuration, then restart or reload your assistant or editor.

Claude Desktop configuration file

Configuration file ~/Library/Application Support/Claude/claude_desktop_config.json

Replace these values: YOUR_ALLOWED_FOLDER

{
  "mcpServers": {
    "filesystem": {
      "command": "npx",
      "args": [
        "-y",
        "@modelcontextprotocol/server-filesystem",
        "YOUR_ALLOWED_FOLDER"
      ]
    }
  }
}

Command source ↗

Windows PowerShell · Claude Desktop configuration fileConfiguration to paste

This installs Filesystem · Node.js 24+

Run these commands in Windows PowerShell, not Command Prompt.
Install Node.js and npm first; follow the project’s required version.
Merge into the existing configuration; keep other tools and settings.
Replace the placeholder values below before running or saving.
Save the configuration, then restart or reload your assistant or editor.

Claude Desktop configuration file

Configuration file %APPDATA%\Claude\claude_desktop_config.json

Replace these values: YOUR_ALLOWED_FOLDER

{
  "mcpServers": {
    "filesystem": {
      "command": "cmd",
      "args": [
        "/c",
        "npx",
        "-y",
        "@modelcontextprotocol/server-filesystem",
        "YOUR_ALLOWED_FOLDER"
      ]
    }
  }
}

Command source ↗

Official installation guide ↗

Requirements, costs and detailed steps

MCP Reference Servers setup documentation

What you need

The current Filesystem package requires Node.js 24 or later and npm.
Use a client that supports MCP over stdio, such as Claude Desktop.
Replace YOUR_ALLOWED_FOLDER with an existing absolute folder path before saving the configuration; authorize only the files needed for the task.

Limitations and costs

The repository explicitly describes these servers as reference implementations, not production-ready solutions.
Filesystem can change or delete allowed files; check proposed operations and keep backups.
Installing Filesystem does not install the other reference servers. The repository is transitioning from MIT to Apache-2.0; remaining MIT code and CC-BY-4.0 documentation retain their stated terms.

Based on public documentation; not individually installed and tested here.

What is MCP Reference Servers?

MCP Reference Servers collects examples maintained by the MCP project. Start with Filesystem if you want an assistant to read, search and edit local files in a small, explicitly allowed folder. Other examples cover tasks such as fetching pages, Git and memory. This listing keeps the repository as one collection; the installation example adds only Filesystem. These are learning references, not a promise of production readiness.

MCP Reference Servers use cases

Read, search, edit and organize local files through the Filesystem example.
Limit Filesystem access to explicit directory paths in its startup configuration.
Explore separate reference servers for fetching pages, Git, memory and other tasks.

Official project & documentation

View source code ↗Project website ↗Setup and usage guide ↗

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