| name | design-motion-audit |
| description | Audit a repository, route, screen, component, or 3D scene for motion quality — design-token consistency, R3F/three.js polish, Reanimated native motion, interaction physicality, frame-rate/draw-call risk, reduced-motion coverage, accessibility, and missing hallmark-motion opportunities. Use when asked to audit, review, critique, find gaps, check performance, verify reduced motion, or assess whether UI animation feels premium. Returns a prioritized punch list. For building/implementing motion route to design-motion-system, expo-motion, web-three-r3f, r3f-scene-polish, or gsap. |
| license | MIT |
Design Motion Audit
Audit the target surface (a repo, route, screen, component, or 3D scene) for
motion quality and implementation safety, and return a prioritized punch list
with exact files, severity, reasoning, and concrete fixes. This skill diagnoses;
it routes implementation to the owning skill (design-motion-system for
system/token work, expo-motion, web-three-r3f, r3f-scene-polish, or gsap).
How to run
-
Optionally run the static analyzers to gather leads (treat findings as leads,
verify each against the real code before reporting):
python3 scripts/detect_motion_stack.py <project-root> --pretty
python3 scripts/audit_motion_system.py <project-root> --pretty
-
Read the flagged files and judge against the dimensions below.
-
Return the punch list, most-severe first.
Audit dimensions
- Design tokens & consistency — hardcoded durations/easings/springs vs
tokenized values; naming by intent. (
references/motion-vocabulary.md)
- R3F / three.js / WebGL —
setState in useFrame, missing delta-time,
per-frame allocations, disposal, DPR, shadows, postprocessing budget.
- Reanimated / Expo / gestures — JS-thread per-frame work, deprecated
runOnJS/runOnUI, worklet misuse, interruptibility, layout-vs-transform.
- Interaction physicality — velocity-aware release, cancellation-safety.
- Performance risk — frame budget, draw calls, texture/asset weight, blur.
(
references/performance-accessibility.md)
- Reduced-motion coverage — every camera move, parallax, loop, and bounce
has a reduced-motion branch that preserves functional feedback.
- Accessibility & readability — text legibility during motion.
- Missing hallmark opportunities — where a signature motion would add value.
Score against references/quality-gates.md, and shape the output with
references/report-template.md. For any change with a visible motion surface, add
runtime proof (references/runtime-verification.md) — static findings alone do
not prove a scene renders or holds its frame budget; the motion-runtime-verifier
subagent (design-motion plugin) drives that when the browser tools are available.
For deep implementation fixes, hand each finding to the skill that owns its stack.
