Command·Routers and working-style·working-style plugin·UI031

/viewport-proof

Takes screenshots of the real page at phone, tablet and desktop sizes, checks the layout automatically, and gives one of three ship verdicts with a sheet of proof. Heavier than /impeccable audit, so save it for a final check on a big page.

Example

/viewport-proof the inbox page

/design comes from the design-kit plugin and the rest from the working-style plugin, both in AtlasScope/agent-kit. Each runs only when you type it.

Skip it when: Jobs where you already know which skill you want; call that skill directly.
Best for: Picking the right design skill for a job, a blunt critique when you want one, and proving a page works at every screen size.
Changes: Report only
Notes: /design picks a skill or recipe from the same catalog, recipes and situations as this guide. Type /design, or /design-kit:design if another skill uses the name.

Skills it uses

viewport-proofUse only when Austin explicitly invokes /viewport-proof or $viewport-proof. Judges a real rendered UI across representative viewports for production readiness: it works, stays consistent across device sizes, and looks deliberately composed. Delivers one of three verdicts with a visual proof sheet of saved screenshots, mechanical geometry checks, and every exclusion named. Ordinary UI, screenshot, review, or coding requests must not activate it.working-style·Agent Kit