modelcontextprotocol/inspector ? reverse-engineered prompt

Build me a local developer tool for testing and debugging MCP servers. I want to run one command, open a browser, and connect to an MCP server either by starting a local command, connecting to an SSE URL, or connecting to a streamable HTTP URL.

The web UI should let me enter the server command, arguments, environment variables, URLs, and optional bearer token details. Once connected, I should be able to inspect what the server exposes and try out its tools and requests from the browser in a clear interactive way.

Please include a small Node proxy server that talks to the MCP server and serves the web UI safely. It should generate a session token by default, print it in the terminal, and make it easy to open the UI with the token filled in.

Also add buttons to copy a single server entry or a full mcp.json config for use in Cursor, Claude Code, or similar clients.