Live preview, running the exact code the prompt carries
Gnomon Jupiter
One planet opened to its whole night, with an altitude curve across the dark hours and the transit marked at its peak, a brightness comparison computed from the real magnitude formula rather than asserted, and its apparent size set against the moon to make the figure mean something.
Paste into Claude Code, Cursor or Windsurf. It builds this screen 1:1 in your app.
What the prompt carriesEverything inlined, nothing fetched
- screen.tsx
- written in full, ready to paste
- 599 lines
- Inter
- Regular, Medium, Semi Bold, Bold, Extra Bold
- via @expo-google-fonts
- Integration rules
- ships 1:1, never re-themed to your app
- SDK 52+
The rule this design follows
It ships exactly as previewed: same colors, same type, same copy, same motion. The prompt tells your agent to build that, and not to adapt it to your existing theme.













