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Axolotlpi

mcp-home-server

by Axolotlpi

mcp-home-server

Self-hostable MCP server that gives Claude tools to run shell scripts and read files on a home server. Runs on a Multipass VM, exposed via Cloudflare Tunnel.

Tools

Tool

What it does

run_script(name, args[])

Runs /opt/mcp-server/scripts/{name} on the VM

read_file(path)

Returns file contents (unrestricted path — VM is the sandbox)

update_self()

git pull + systemctl restart — picks up new scripts automatically


Related MCP server: MCP Research Tools

VM Deployment

git clone git@github.com:Axolotlpi/mcp-home-server.git /opt/mcp-server
cp /opt/mcp-server/.env.example /opt/mcp-server/.env
nano /opt/mcp-server/.env          # set MCP_TOKEN to a long random secret
sudo bash /opt/mcp-server/setup.sh

Allow the service to restart itself without a password prompt:

echo 'ubuntu ALL=(ALL) NOPASSWD: /bin/systemctl restart mcp-server' \
  | sudo tee /etc/sudoers.d/mcp-server

Cloudflare Tunnel Setup

This exposes 127.0.0.1:8000 on the VM to a public HTTPS URL without opening firewall ports.

1. Install cloudflared

curl -L https://pkg.cloudflare.com/cloudflare-main.gpg \
  | sudo tee /usr/share/keyrings/cloudflare-main.gpg > /dev/null
echo 'deb [signed-by=/usr/share/keyrings/cloudflare-main.gpg] https://pkg.cloudflare.com/cloudflared jammy main' \
  | sudo tee /etc/apt/sources.list.d/cloudflared.list
sudo apt update && sudo apt install cloudflared -y

2. Authenticate and create a tunnel

cloudflared tunnel login           # opens browser — pick your domain
cloudflared tunnel create mcp-server

Note the tunnel ID printed after creation.

3. Find your credentials file path

The credentials file location depends on which user ran tunnel login:

# if you ran as root
ls /root/.cloudflared/

# if you ran as your normal user
ls ~/.cloudflared/

You're looking for a file named <YOUR_TUNNEL_ID>.json. Use whichever path exists — you'll need it in the next step.

4. Create the config file

sudo mkdir -p /etc/cloudflared
sudo tee /etc/cloudflared/config.yml <<EOF
tunnel: <YOUR_TUNNEL_ID>
credentials-file: /root/.cloudflared/<YOUR_TUNNEL_ID>.json

ingress:
  - hostname: mcp.yourdomain.com
    service: http://127.0.0.1:8000
  - service: http_status:404
EOF

Replace <YOUR_TUNNEL_ID> and mcp.yourdomain.com with your values.

5. Route DNS

cloudflared tunnel route dns mcp-server mcp.yourdomain.com

This creates a CNAME record in your Cloudflare dashboard pointing to the tunnel.

6. Run as a service

sudo cloudflared service install
sudo systemctl enable --now cloudflared

The tunnel will now start on boot. Your server is reachable at https://mcp.yourdomain.com.


Adding to Claude

The MCP server speaks SSE. The endpoint is https://mcp.yourdomain.com/sse.

Claude Desktop

Edit claude_desktop_config.json:

  • macOS: ~/Library/Application Support/Claude/claude_desktop_config.json

  • Windows: %APPDATA%\Claude\claude_desktop_config.json

  • Linux: ~/.config/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "home-server": {
      "url": "https://mcp.yourdomain.com/sse",
      "headers": {
        "Authorization": "Bearer YOUR_MCP_TOKEN"
      }
    }
  }
}

Restart Claude Desktop after saving.

Claude Code (CLI)

claude mcp add --transport sse home-server https://mcp.yourdomain.com/sse \
  --header "Authorization: Bearer YOUR_MCP_TOKEN"

Or add it to .claude/settings.json manually:

{
  "mcpServers": {
    "home-server": {
      "type": "sse",
      "url": "https://mcp.yourdomain.com/sse",
      "headers": {
        "Authorization": "Bearer YOUR_MCP_TOKEN"
      }
    }
  }
}

Adding New Scripts

  1. Add your script to scripts/ and push to GitHub

  2. Tell Claude: "run update_self" — it pulls the latest code and restarts

  3. Tell Claude: "run my-script.sh" — it executes on the VM

The connection will drop briefly during the restart on step 2. That's expected.

To block a script from being callable via the API, add its filename to blacklist.txt.

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