1Set up
2Capture
3Measure
✓
Do this
Item flat · card landscape in corner · camera directly overhead · even light
✗
Avoid this
Angled shots · card rotated or far away · shadows · bunched fabric
Setup checklist — tap each to confirm
Item completely flat
No folds, bunching or raised edges
Card landscape in any corner — long edge horizontal
Card must be square to the frame — no rotation
Camera directly overhead
Phone held flat above the item, lens pointing straight down
Whole item in frame with space around it
Nothing cropped — step back if needed
Anthropic API key
Get a key at console.anthropic.com — stored on device only