Use case · Product UI

Your agent designs real UI.
On your real codebase.

Link your source files and the agent designs screens that match your tokens, components, and copy — on device-accurate iPhone, web, and desktop frames. It sees a render of its own work after every edit and fixes what looks wrong.

Finance app home screen, light — designed by the agent in Screenie Finance app home screen, dark — designed by the agent in Screenie
Both screens: one prompt, iPhone 6.3″ frames, real exports — untouched. · designed in Screenie

How it goes.

1

Link your code

Point Screenie at your theme, components, and copy. The agent studies it into a design system.

2

Prompt the screen

“Design the checkout screen — dark mode.” Frames fill in live at the right device size.

3

Iterate on renders

The agent sees its own pixels, judges them, and fixes them. You approve; Copy prompt ships it.

Why it works.

Reads real code

Tokens, theme files, shared components, live copy — designs match what you’ve actually built.

Device-accurate frames

iPhone 6.1″–6.9″ with safe areas, web desktop, full-page — every screen at its true ratio.

Straight to production

Copy prompt puts brand context + design HTML on your clipboard for your coding agent.

Try it with your agent tonight.

Free to start · runs on the Claude Code subscription you already have.

Download for macOS ↓