MCP Tunnel

@leomercier

About MCP Tunnel

MCP server for accessing VM command line with web tunneling

Config

Add this server to your MCP-compatible client using the configuration below.

{
  "mcpServers": {
    "mcp-tunnel": {
      "command": "npx",
      "args": [
        "mcp-cli"
      ]
    }
  }
}

Tools

No tools detected

Fetch the live tool list by running this server in a temporary sandbox using the button above.

Overview

What is MCP Tunnel?

MCP Tunnel is a simple MCP server that allows accessing the command line of a VM machine. When started, it tunnels the host to the web so the VM can be accessed via the Model Context Protocol.

How to use MCP Tunnel?

Install globally with npm install -g mcp-cli and run mcp-cli, or run directly with npx mcp-cli. After starting, use the MCP tools execute_command and start_tunnel to send commands and create web tunnels. Optionally pass --no-tunnel to disable automatic tunneling.

Key features of MCP Tunnel

Execute shell commands on a VM through MCP
Web-based terminal interface for VM interaction
Automatic tunneling for remote accessibility
WebSocket-based real‑time communication

Use cases of MCP Tunnel

Remotely run shell commands on a virtual machine
Access a VM’s command line from any device with a web browser
Develop and test scripts via a web terminal interface
Expose a local VM temporarily over the internet

FAQ from MCP Tunnel

What are the prerequisites for MCP Tunnel?

Node.js version 18 or newer is required.

How can I start MCP Tunnel without automatic tunneling?

Add the --no-tunnel flag when starting, e.g., mcp-cli --no-tunnel or npm start -- --no-tunnel.

What MCP tools are available?

Two tools: execute_command (runs a shell command) and start_tunnel (creates a web tunnel with optional port and subdomain parameters).

How do I access the web interface?

After starting the tunnel, visit the URL provided by the tunnel service; the interface allows executing commands and seeing output in real time.

Is authentication or transport security mentioned?

The README does not specify authentication or transport security; it advises using strong auth mechanisms and limiting commands before exposing the tunnel.

Frequently asked questions

What are the prerequisites for MCP Tunnel?

Node.js version 18 or newer is required.

How can I start MCP Tunnel without automatic tunneling?

Add the `--no-tunnel` flag when starting, e.g., `mcp-cli --no-tunnel` or `npm start -- --no-tunnel`.

What MCP tools are available?

Two tools: `execute_command` (runs a shell command) and `start_tunnel` (creates a web tunnel with optional port and subdomain parameters).

How do I access the web interface?

After starting the tunnel, visit the URL provided by the tunnel service; the interface allows executing commands and seeing output in real time.

Is authentication or transport security mentioned?

The README does not specify authentication or transport security; it advises using strong auth mechanisms and limiting commands before exposing the tunnel.

Comments

Basic information

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