Knowledge RAG
Submit principleDesign Knowledge Base
Community-maintained principles reviewed before publication and retrieved as Agent design constraints.
2 published principles / 192 in library
Interaction Responsive Motionforms / validation
Form Error State Contract
A form error state contract puts labels, helper text, validation timing, inline errors, error summaries, submit states, server failures, mobile keyboards, and ARIA wiring into one implementable model.
Form errors are not one red component; they combine field contracts, state machines, and recovery paths, and should route to narrower guidance for summaries, accessible feedback, persistent labels, and transactional recovery.95%Interaction Responsive Motionforms / workflowForm Flow and Validation
Forms should follow the user's mental order and provide recoverable feedback at key moments.
Good forms split complex tasks into completeable steps rather than dumping every field at once.82%