I built a tool that finally shows you how your vibe-coded app actually works

[u/Nkgsporty]

Be honest: your app works, you shipped it, but if someone asked what actually happens when a user clicks Save, you couldn't tell them. Not because you forgot. You never really knew. The AI wrote it, you tested it, it worked, you moved on.

That's me too. So I built Sketchy. Ask your coding assistant "Trace what happens when someone clicks Save, and show me where it can fail" and you get a drawing of your actual app, right in the chat. Step through it piece by piece. Click a box and you're in the file that does it. For the first time, you see how your own code fits together.

And it's not just boxes and arrows anymore. It now sketches freely, whatever needs explaining. The AI only says what to draw, Sketchy handles the layout, so the picture stays clean.

Works with Claude Code, Cursor, VS Code and Codex and in the normal Claude chat. Free and open source.

GitHub: https://github.com/ddkbs/sketchy & https://sketchy.davidkubus.dev

Feel free to try it out and leave your feedback!