MCP Tunnel
hybrid server
The server is able to function both locally and remotely, depending on the configuration or use case.
Integrations
Supports configuration of the server through environment variables stored in a .env file.
Used for cloning the repository during local development setup.
Used as the runtime environment for the MCP server, with v18 or newer required for operation.
MCP Tunnel
A simple MCP (Model Context Protocol) server that allows accessing the command line of a VM machine. When started, it also tunnels the host to the web so it can be accessed via MCP.
Features
- Execute shell commands on a VM through MCP
- Web-based terminal interface for VM interaction
- Automatic tunneling to make the VM accessible from anywhere
- WebSocket-based real-time communication
Prerequisites
- Node.js (v18 or newer)
Installation and Usage
Running with npx (no installation)
Global Installation
Local Development
Development
Run the development server with hot-reloading for both backend and frontend:
Building
Build both the frontend and backend for production:
Usage
- Start the MCP server:
This will build the project and start the server. By default, a tunnel will be created automatically. Use the --no-tunnel flag to disable automatic tunneling.
- The server will start and provide output on stderr (to avoid interfering with MCP communication on stdout)
- Use MCP to interact with the server using the following tools:
Available MCP Tools
execute_command: Run a shell command on the VM- Parameters:
{ "command": "your shell command" }
- Parameters:
start_tunnel: Create a web tunnel to access the VM interface- Parameters:
{ "port": 8080, "subdomain": "optional-subdomain" }
- Parameters:
Web Interface
After starting the tunnel, you can access the web-based terminal interface at the URL provided by the tunnel. This interface allows you to:
- Execute commands directly in the VM
- See command outputs in real-time
- Interact with the VM from any device with web access
Environment Variables
Create a .env file to configure the server:
Security Considerations
This tool provides direct access to your VM's command line. Consider these security practices:
- Use strong authentication mechanisms before exposing the tunnel
- Limit the commands that can be executed through proper validation
- Consider running in a restricted environment
- Do not expose sensitive information through the tunnel
This server cannot be installed
A simple MCP server that allows accessing and executing shell commands on a VM machine through a web-based terminal interface, with automatic tunneling to make the VM accessible from anywhere.