Borrowing it
Nothing to install: this file belongs to chama-x/GroundRules. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/chama-x/GroundRules/master/.agents/archive/v3/skill_motion-design/SKILL.mdgit clone --depth 1 https://github.com/chama-x/GroundRulesWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/chama-x/groundrules/skill_motion-design)<a href="https://agentmods.dev/skills/chama-x/groundrules/skill_motion-design"><img src="https://agentmods.dev/badge/skills/chama-x/groundrules/skill_motion-design/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/chama-x/groundrules/skill_motion-design"><img src="https://agentmods.dev/badge/skills/chama-x/groundrules/skill_motion-design.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00082 | $0.03371 |
| Opus 5.5 | $0.00033 | $0.01348 |
| Sonnet 5.5 | $0.00016 | $0.00674 |
| Haiku 4.5 | $0.00008 | $0.00337 |
Grade A, and why
motion-design scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
This is a copy
100% identical to motion-design — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
How it starts
The opening of the file, as written. The whole thing — 316 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Motion Design Skill
When to Apply
Use this skill when:
- Creating UI animations (buttons, cards, modals, page transitions)
- Designing micro-interactions and feedback animations
- Building loading, success, or error states
- Animating illustrations or decorative elements
- Planning scroll-triggered or progress-based animations
- Establishing brand motion identity
- Choreographing multi-element sequences
Decision tree:
- Does it serve a functional purpose (feedback, guidance)? → Timing rules for responsiveness
- Does it express brand personality? → Motion Personality archetypes
- Does it tell a story or guide attention? → Disney principles + choreography
- Is this a complex multi-element scene? → 1/3 Rule + stagger patterns
Quick Reference: 8-Step Checklist
Before creating any animation:
- Emotional target? — joy, calm, urgency, elegance
- Motion Personality? — Playful, Premium, Corporate, Energetic
- Primary property? — position, scale, rotation, opacity
- Duration? — see duration table below
- Easing family? — entrance=decelerate, exit=accelerate
- Hero element? — apply staging principles
- Secondary + ambient layers? — add richness
- 1/3 rules? — motion distance, simultaneous elements
Three Pillars (CRITICAL)
Every animation must satisfy three pillars before any technical decisions:
| Pillar | Question | Drives |
|---|---|---|
| Emotional Intent | What should the viewer FEEL? | Easing, timing, amplitude |
| Visual Narrative | What's the micro-story? | Setup → Action → Resolution |
| Motion Craft | How do we make it believable? | Physics, secondary motion, paths |
Three motion layers (flat animation = missing layers):
- Primary: Main action the viewer follows
- Secondary: Supporting richness (shadows, icons shifting)
- Ambient: Background life (gradients, subtle pulses)
Deep dive: director/core-philosophy.md
What ships with it
16 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
- director/choreography.md 3.0 KB
- director/context-adaptation.md 3.0 KB
- director/core-philosophy.md 1.8 KB
- director/decision-framework.md 2.8 KB
- director/disney-principles.md 3.1 KB
- director/emotion-mapping.md 2.8 KB
- director/motion-personality.md 2.9 KB
- director/narrative-structure.md 2.4 KB
- patterns/ambient-continuous.md 2.8 KB
- patterns/entrance-exit.md 2.8 KB
- patterns/multi-element.md 2.3 KB
- patterns/state-feedback.md 3.0 KB
- reference/property-selection.md 2.9 KB
- reference/quality-checklist.md 2.0 KB
- reference/timing-easing-tables.md 2.8 KB
- reference/troubleshooting.md 2.6 KB
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 1mo ago First seen · 316 lines · 82 tokens per session scan A 8729ecbc7e57
motion-design is a skill published in the GitHub repository chama-x/GroundRules (5 stars, last pushed 2mo ago), licensed MIT. It adds 82 tokens to every session and 3,371 once invoked, about $0.0003 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 100% identical to motion-design, differing in 0 lines, and is treated as a copy.
Other skills, from other repositories
wireframe
Produce low-fidelity black-and-white UI wireframes as SVGs or viewer pages. Use when asked to wireframe, sketch a screen, draft a layout, make a low-fi mockup, or publish wireframes.
design-critique
Give a structured product design critique — user job clarity, hierarchy, affordance, error states, accessibility, and consistency — focused on what to change, in what order, and why.
paperclip-capsules
Generate, implement, or review Paperclip capsule visuals. Use for capsule art, agent capsules, heartbeat status capsules, identicons, capsule banks, or brand-usage validation.
skin-creator
Create and apply a two-asset LobsterAI visual skin from the user's style description. Use only when the AI Skin Designer kit supplies the structured skinpack workflow marker; do not use for ordinary theme or image requests.
canvas-design
Create beautiful visual art in .png and .pdf documents using design philosophy. You should use this skill when the user asks to create a poster, piece of art, design, or other static piece. Create original visual designs, never copying existing artists' work to avoid copyright violations.
screenshot-critique
Use the unprimed sub agent as a second set of eyes before accepting visual work — MANDATORY before declaring any user-reported visual bug fixed or claiming a visual change verified; primed eyes pass defects fresh eyes catch.