0xh7ml/xbody ? reverse-engineered prompt

Build me a small Go project called xbody that installs cleanly with

go install github.com/0xh7ml/xbody

I want it to be a simple command line tool I can run from the terminal, with a clean entry point and reusable code underneath. Keep it lightweight and polished, with sensible defaults, helpful usage text, and basic error handling so it feels finished. If you need to, look up the current Go docs online and make sure it follows normal Go project conventions and builds without extra fuss.

Please set it up so the main command works from the repo root, and the core logic lives in a separate package that could be reused later. Make it feel like a real public project that someone could install and use right away.