Your First MCP Experience: 5-Minute Setup

Your First MCP Experience: 5-Minute Setup

Your First MCP Experience: 5-Minute Setup

Goal: In the next 5 minutes, you’ll give Claude Desktop superpowers - the ability to read, write, and organize files on your computer, all with your permission.

🎯
What You’ll Achieve: Claude will become your intelligent file assistant, capable of organizing downloads, creating documents, and managing your desktop - safely and with your approval.

🚀 Why This Matters

This isn’t just about file management. You’re about to experience the future of AI computing:

  • AI that understands your context (your actual files, not just text)
  • AI that can take action (create, move, organize files)
  • AI that asks permission (secure, controlled access)

This is your first taste of what MCP enables - and it’s just the beginning.

⏱️ 5-Minute Roadmap

  flowchart LR
    A["📥 Step 1<br/>Download Claude<br/>(1 min)"] --> B["⚙️ Step 2<br/>Configure MCP<br/>(2 min)"]
    B --> C["🔄 Step 3<br/>Restart & Test<br/>(1 min)"]
    C --> D["🎉 Step 4<br/>Try It Out!<br/>(1 min)"]

📥 Step 1: Get Claude Desktop (1 minute)

If you already have Claude Desktop: Skip to Step 2!

If you’re new: Download Claude for Desktop for macOS or Windows.

💡
Why Desktop? MCP servers run locally on your computer for security. The web version can’t access your files (and that’s a good thing!).

Quick version check: Click Claude menu → “Check for Updates…” to ensure you have the latest version.

⚙️ Step 2: Configure MCP (2 minutes)

We’re going to connect Claude to a pre-built File System Server - think of it as giving Claude a secure “file management app” that it can use with your permission.

2.1 Open Developer Settings

🔧
What we’re doing: Creating a configuration file that tells Claude which “apps” (MCP servers) it can use.

This will create a configuration file at:

  • macOS: ~/Library/Application Support/Claude/claude_desktop_config.json
  • Windows: %APPDATA%\Claude\claude_desktop_config.json

Open up the configuration file in any text editor. Replace the file contents with this:

{
  "mcpServers": {
    "filesystem": {
      "command": "npx",
      "args": [
        "-y",
        "@modelcontextprotocol/server-filesystem",
        "/Users/username/Desktop",
        "/Users/username/Downloads"
      ]
    }
  }
}
{
  "mcpServers": {
    "filesystem": {
      "command": "npx",
      "args": [
        "-y",
        "@modelcontextprotocol/server-filesystem",
        "C:\\Users\\username\\Desktop",
        "C:\\Users\\username\\Downloads"
      ]
    }
  }
}
🌐

How does the configuration file work?

This configuration file tells Claude for Desktop which MCP servers to start up every time you start the application. In this case, we have added one server called “filesystem” that will use the Node npx command to install and run @modelcontextprotocol/server-filesystem.

Make sure to replace username with your computer’s username. The paths should point to valid directories that you want Claude to be able to access and modify. It’s set up to work for Desktop and Downloads, but you can add more paths as well.

You will also need Node.js on your computer for this to run properly. To verify you have Node installed, open the command line on your computer.

  • On macOS, open the Terminal from your Applications folder
  • On Windows, press Windows + R, type “cmd”, and press Enter

Once in the command line, verify you have Node installed by entering in the following command:

node --version

If you get an error saying “command not found” or “node is not recognized”, download Node from nodejs.org.

Command Privileges

Claude for Desktop will run the commands in the configuration file with the permissions of your user account, and access to your local files. Only add commands if you understand and trust the source.

3. Restart Claude

After updating your configuration file, you need to restart Claude for Desktop.

Upon restarting, you should see a hammer icon in the bottom right corner of the input box:

After clicking on the hammer icon, you should see the tools that come with the Filesystem MCP Server:

If your server isn’t being picked up by Claude for Desktop, proceed to the Troubleshooting section for debugging tips.

4. Try it out!

You can now talk to Claude and ask it about your filesystem. It should know when to call the relevant tools.

Things you might try asking Claude:

  • Can you write a poem and save it to my desktop?
  • What are some work-related files in my downloads folder?
  • Can you take all the images on my desktop and move them to a new folder called “Images”?

As needed, Claude will call the relevant tools and seek your approval before taking an action:

Troubleshooting

Server not showing up in Claude / hammer icon missing
  1. Restart Claude for Desktop completely
  2. Check your claude_desktop_config.json file syntax
  3. Make sure the file paths included in claude_desktop_config.json are valid and that they are absolute and not relative
  4. Look at logs to see why the server is not connecting
  5. In your command line, try manually running the server (replacing username as you did in claude_desktop_config.json):
# MacOS/Linux
npx -y @modelcontextprotocol/server-filesystem /Users/username/Desktop /Users/username/Downloads

# Windows
npx -y @modelcontextprotocol/server-filesystem C:\Users\username\Desktop C:\Users\username\Downloads
Getting logs from Claude for Desktop

Claude.app logging related to MCP is written to log files in:

  • macOS: ~/Library/Logs/Claude

  • Windows: %APPDATA%\Claude\logs

  • mcp.log will contain general logging about MCP connections and connection failures.

  • Files named mcp-server-SERVERNAME.log will contain error (stderr) logging from the named server.

You can run the following command to list recent logs and follow along with any new ones (on Windows, it will only show recent logs):

# macOS/Linux
tail -n 20 -f ~/Library/Logs/Claude/mcp*.log

# Windows
type "%APPDATA%\Claude\logs\mcp*.log"

Next steps