
Pinch Checkout
E-commerce checkout module
Claude Sonnet 5.5
5 · Design examples
Follow complete checkout, onboarding, booking and upload flows. Study field grouping, step transitions, validation and recovery from mistakes rather than judging a tidy row of inputs.
Finish each flow with realistic input, then leave a required field empty and trigger an error. Check persistent labels, field-level guidance, preserved input when going back, and an unambiguous completion state.
Installation & usage guide →
E-commerce checkout module
Claude Sonnet 5.5

Sign-in and onboarding
GPT 6.1 Sol

Recording studio booking website
GPT 6.1 Sol

Cabin details and booking
GPT 6.1 Sol

File upload module
Claude Fable 5.1
Stop AI agents from building squished desktop webpages for mobile. Design 390×844 multi-screen mobile apps with side-by-side screens.html boards and tactile states.
Agent Guide · Claude CodeInstall Oil UI Skill in Claude Code to design websites, mobile apps and UI modules using side-by-side direction boards, clear briefs and blind screenshot reviews.
Design Method · Real-Screen Blind ReviewWhy inspecting JSX and CSS in the editor misses layout bugs. Learn how Oil UI uses 1440px/390px browser screenshots, 200% crops, blurred block checks and blind subagents.