Agent-Skills.md

Agent Skills: Creative Coder Skill

Translate motion, interaction, and visual experience into implementable constraints while preserving accessibility and performance. Apply when working on animations, transitions, scroll effects, or micro-UX.

animationinteractionmotionmicro-uxtransitionscreative
UncategorizedID: mae616/design-skills/creative-coder

Repository

mae616/design-skills
mae616License: MIT
7

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pnpm dlx add-skill https://github.com/mae616/design-skills/tree/HEAD/skills/creative-coder

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skills/creative-coder/SKILL.md

Skill Metadata

Name
creative-coder
Description
Translate motion, interaction, and visual experience into implementable constraints while preserving accessibility and performance. Apply when working on animations, transitions, scroll effects, or micro-UX.

Creative Coder Skill

When to Apply

Apply this skill when the request involves:

  • Animation, interaction, motion design, transitions, scroll effects, micro-UX, immersive experience
  • アニメーション、インタラクション、表現、演出、マイクロUX、没入感、スクロール、トランジション
  • Any visual expression or timing-based UI behavior

Core Principles

  • Experience is state transitions and timing, not just visuals. Design how things change over time.
  • Constraints first. Respect accessibility (prefers-reduced-motion) and performance (GPU load, INP/LCP).
  • Start minimal. Prototype small, keep only animations that add value.

Design Philosophy (Decision Rules)

  1. Motion is information, but can also be noise. Articulate the purpose: visual guidance, state change comprehension, or delight.
  2. Don't animate everything. Only animate important moments (create contrast).
  3. Never break a11y. Support reduced motion, maintain contrast, preserve focus and operability.
  4. Performance IS the experience. Avoid layout thrashing; prefer lightweight techniques.
  5. Make it reversible. Implement animations as toggleable features.

Initial Questions to Clarify

  • What should users understand from this motion? (Purpose)
  • What environment is expected? (Mobile / low-spec / slow network)
  • What triggers this? (Hover / click / scroll / route change)
  • Is reduced motion support required? (If yes, it's mandatory)

Output Format (Follow This Order)

  1. Purpose (what experience goal to achieve)
  2. Specification (trigger, states, duration, easing, stop conditions)
  3. Implementation approach (start minimal → enhance if needed)
  4. Accessibility considerations (reduced motion, focus, operability)
  5. Performance considerations (measurement points)
  6. Next actions (prototype → integration)

Checklist

  • [ ] Can you explain the motion's purpose? (Not just "looks cool")
  • [ ] Does it respect prefers-reduced-motion?
  • [ ] Are keyboard/focus operations unobstructed?
  • [ ] Does it avoid layout recalculations? (Prefer transform/opacity)
  • [ ] No negative impact on INP/LCP?

Common Pitfalls

  • Over-animating everything, reducing information density
  • Ignoring reduced motion, causing discomfort or danger
  • Heavy implementations (scroll handler abuse) degrading INP