What is Untun MCP?

Untun MCP is a tool that simplifies the creation and management of secure tunnels for local servers, allowing you to easily expose your local development environment to the internet using natural language commands with your AI assistant.

Is Untun MCP officially affiliated with Cloudflare or UnJS?

No, Untun MCP is an independent, community-developed MCP wrapper around the untun CLI tool and is not officially affiliated with, endorsed by, or connected to Cloudflare or UnJS.

What are the requirements to use Untun MCP?

You need Node.js >= v18.0.0, an MCP-compatible client (Cursor, Claude Desktop, VS Code, etc.), and the untun CLI tool (which is installed automatically as needed).

How do I install Untun MCP in Cursor?

Go to Settings -> Cursor Settings -> MCP -> Add new global MCP server and paste the provided configuration into your Cursor ~/.cursor/mcp.json file.

How do I install Untun MCP in VS Code?

Add the provided configuration to your VS Code MCP config file.

How do I install Untun MCP in Claude Desktop?

Add the provided configuration to your Claude Desktop claude_desktop_config.json file.

How do I create a tunnel with Untun MCP?

Ask your AI assistant to create a tunnel using natural language, such as “Create a tunnel to my localhost:3000 server.”

How do I check my running tunnels?

Ask your AI assistant to show you all your active tunnels using a command like “Show me all my active tunnels.”

How do I stop a specific tunnel?

Ask your AI assistant to stop the tunnel using a command like “Stop the tunnel to localhost:3000.”

What do I do if my tunnel doesn’t start?

Make sure your local server is running, check if there’s already a tunnel running for that port, and use list_tunnels to check the status of all tunnels.

What does it mean if I see “remote” tunnels that can’t be stopped?

Remote tunnels are tracked by hostname and are likely running on another machine. You’ll need to stop them from the original machine.

Can I use Untun MCP with UBOS?

Yes! Untun MCP enhances UBOS by enabling secure, easily managed tunnels to expose AI Agent development and testing environments.