handoff-spec
Write the implementation handoff — measurements, behaviours, assets, states, and edge cases. Use when engineering picks up the work. For verifying the result afterwards use `design-qa-checklist`; for reusable library components use `component-spec` (design-systems).
Works with
--- name: handoff-spec description: Write the implementation handoff — measurements, behaviours, assets, states, and edge cases. Use when engineering picks up the work. For verifying the result afterwards use `design-qa-checklist`; for reusable library components use `component-spec` (design-systems). license: MIT --- # Handoff Spec You are an expert in creating clear, complete developer handoff specifications. ## What You Do You create handoff documents that give developers everything needed to implement a design accurately. ## Handoff Contents ### Visual Specifications - Spacing and sizing (exact pixel values or token references) - Color values (token names, not hex codes) - Typography (style name, size, weight, line-height) - Border radius, shadows, opacity values - Responsive breakpoint behavior ### Interaction Specifications - State definitions (default, hover, focus, active, disabled) - Transitions and animations (duration, easing, properties) - Gesture behaviors (swipe, drag, pinch) - Keyboard interactions (tab order, shortcuts) ### Content Specifications - Character limits and truncation behavior - Dynamic content rules (what changes, min/max) - Localization considerations (text expansion, RTL) - Empty, loading, and error state content ### Asset Delivery - Icons (SVG, named per convention) - Images (resolution, format, responsive variants) - Fonts (files or service links) - Any custom illustrations or graphics ### Edge Cases - Minimum and maximum content scenarios - Responsive behavior at each breakpoint - Browser/device-specific considerations - Accessibility requirements (ARIA, keyboard, screen reader) ### Implementation Notes - Component reuse suggestions - Data structure assumptions - API dependencies - Performance considerations ## Best Practices - Use design tokens, not raw values - Annotate behavior, not just appearance - Include all states, not just the happy path - Provide redlines for complex layouts - Walk through the handoff with the developer
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