Ngsrv

MCP server for ngsrv tunnels. Expose localhost on public HTTPS from Cursor and other MCP clients.

ngsrv is a developer tunnel tool (CLI, YAML, webhooks). This package is the optional MCP integration.

Cursor

~/.cursor/mcp.json:

{
  "mcpServers": {
    "ngsrv": {
      "command": "npx",
      "args": ["-y", "@ngsrv/mcp@latest"]
    }
  }
}

First tunnel.start provisions a free 12-hour device trial (no signup). Agent tokens skip the Free-tier visitor warning page.

Optional: NGSRV_API_TOKEN from ngsrv.com → API Tokens → Create agent token.

Tools

Tool	Description
tunnel.start	port → public HTTPS URL
tunnel.list	Active tunnels in this process
tunnel.stop	Stop by port
token.provision	12h agent token (trial or refresh)
docs.install	Cursor config + install snippets

Legacy aliases (start_tunnel, etc.) still work.

Registry install (optional)

Some MCP clients support Smithery:

smithery mcp add ngsrv/ngsrv

Docs

• Cursor MCP setup
• Support