When you're iterating on UI code and need to know if your generated screenshot actually matches the reference design, this gives you a strict JSON verdict with a 0-100 score, pass/revise/fail status, and concrete differences like "nav spacing too tight" or "button font weight wrong." It's built to plug into an edit loop: you keep revising until the score hits 90+, and the structured output tells you exactly what to fix next instead of eyeballing diffs. The category match flag helps catch when you've drifted into the wrong UI style entirely. Useful when visual fidelity matters and you want deterministic feedback before moving on.
npx skills add https://github.com/yeachan-heo/oh-my-claudecode --skill visual-verdict