Skill Wiki
Target Size
The minimum interactive hit area for touch and pointer targets to be usable without accidental activation or difficulty. WCAG 2.2 SC 2.5.…
$ prime install @community/metric-target-sizeProjection
Always in _index.xml · the agent never has to ask for this.
touch-target-size [metric] v1.0.0
The minimum interactive hit area for touch and pointer targets to be usable without accidental activation or difficulty. WCAG 2.2 SC 2.5.8 sets a 24×24 CSS px minimum with spacing rules; Apple and Google recommend higher targets for mobile.
Loaded when retrieval picks the atom as adjacent / supporting.
touch-target-size [metric] v1.0.0
The minimum interactive hit area for touch and pointer targets to be usable without accidental activation or difficulty. WCAG 2.2 SC 2.5.8 sets a 24×24 CSS px minimum with spacing rules; Apple and Google recommend higher targets for mobile.
Unit
CSS pixels (width × height)
Thresholds
- Level: WCAG 2.2 AA (SC 2.5.8)
- Min Width: 24px
- Min Height: 24px
- Note: OR the component offset from adjacent targets is enough that the 24px area (possibly including spacing) isn't reduced.
- Level: Apple HIG recommended
- Min Width: 44px
- Min Height: 44px
- Note: Minimum for comfortable single-finger tap on iOS; also Google Material 3 recommendation.
- Level: Google Material 3 minimum
- Min Width: 48px
- Min Height: 48px
- Note: Preferred size for Android interactive elements.
Formula
target-width >= threshold AND target-height >= threshold
Loaded when retrieval picks the atom as a focal / direct hit.
touch-target-size [metric] v1.0.0
The minimum interactive hit area for touch and pointer targets to be usable without accidental activation or difficulty. WCAG 2.2 SC 2.5.8 sets a 24×24 CSS px minimum with spacing rules; Apple and Google recommend higher targets for mobile.
Unit
CSS pixels (width × height)
Thresholds
- Level: WCAG 2.2 AA (SC 2.5.8)
- Min Width: 24px
- Min Height: 24px
- Note: OR the component offset from adjacent targets is enough that the 24px area (possibly including spacing) isn't reduced.
- Level: Apple HIG recommended
- Min Width: 44px
- Min Height: 44px
- Note: Minimum for comfortable single-finger tap on iOS; also Google Material 3 recommendation.
- Level: Google Material 3 minimum
- Min Width: 48px
- Min Height: 48px
- Note: Preferred size for Android interactive elements.
Formula
target-width >= threshold AND target-height >= threshold
Unit
CSS pixels (width × height)
Thresholds
- Level: WCAG 2.2 AA (SC 2.5.8)
- Min Width: 24px
- Min Height: 24px
- Note: OR the component offset from adjacent targets is enough that the 24px area (possibly including spacing) isn't reduced.
- Level: Apple HIG recommended
- Min Width: 44px
- Min Height: 44px
- Note: Minimum for comfortable single-finger tap on iOS; also Google Material 3 recommendation.
- Level: Google Material 3 minimum
- Min Width: 48px
- Min Height: 48px
- Note: Preferred size for Android interactive elements.
Formula
target-width >= threshold AND target-height >= threshold
Source
prime-system/examples/frontend-design/primes/compiled/@community/metric-target-size/atom.yaml