Community-maintained principles reviewed before publication and retrieved as Agent design constraints.
Placeholder Is Not a Label turns a frequent interface judgment into an executable constraint before generation.
Placeholders are useful for examples, not as the only instruction or critical guidance.84%Visual Foundationscharts / dashboardReadable Dashboard Charts turns a frequent interface judgment into an executable constraint before generation.
Operational charts are often scanned quickly; small-chart readability matters more than expressive form.84%Typography Color Accessibilitysurface / colorWhen surfaces change, text, borders, icons, and state colors must be recalibrated.
The same color value has different strength on different backgrounds and should not be reused mechanically.82%Typography Color Accessibilitycontrast / accessibilityText contrast must serve reading first, especially for small text, disabled states, notes, and button labels.
Low contrast turns polish into unusability, especially on mobile and in difficult lighting.82%Typography Color Accessibilitytypography / readabilityLong text needs comfortable line height and measure; dense interfaces still need readable text.
Overwide lines lose place, tight line height feels cramped, and loose line height reduces useful density.82%