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handoff-spec

The handoff-spec skill generates comprehensive developer handoff specifications that translate design into implementation-ready documentation. Use this when you need to specify visual measurements using design tokens, document all interactive states and transitions, define content rules for dynamic elements, organize asset delivery requirements, and capture edge cases across responsive breakpoints and accessibility concerns. It ensures developers have exact specifications for spacing, colors, typography, animations, and component behaviors without ambiguity.

Install in Claude Code
Copy
git clone --depth 1 https://github.com/Owl-Listener/designer-skills /tmp/handoff-spec && cp -r /tmp/handoff-spec/design-ops/skills/handoff-spec ~/.claude/skills/handoff-spec
Then start a new Claude Code session; the skill loads automatically.

SKILL.md

# 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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