Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add Owl-Listener/designpowers --skill motion-choreographygit clone --depth 1 https://github.com/Owl-Listener/designpowersWrote 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/owl-listener/designpowers/motion-choreography)<a href="https://agentmods.dev/skills/owl-listener/designpowers/motion-choreography"><img src="https://agentmods.dev/badge/skills/owl-listener/designpowers/motion-choreography.svg" alt="Measured on agentmods" 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 | $0.00041 | $0.00550 |
| Opus 5 | $0.00020 | $0.00275 |
| Sonnet 5 | $0.00008 | $0.00110 |
| Haiku 4.5 | $0.00004 | $0.00055 |
Grade A, and why
motion-choreography 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 8d 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.
How it starts
The opening of the file, as written. The whole thing — 82 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Motion Choreography
Motion is communication. Every animation answers a question the user didn't know they had. If it doesn't answer one, cut it.
The Three Questions
Before adding any animation:
- What changed? — the animation makes it visible
- What should I look at next? — directs attention
- How are these related? — shows spatial/hierarchical relationship
Can't answer at least one? The animation is decoration. Cut it.
Duration Guide
| Context | Duration |
|---|---|
| Micro-interaction (button, toggle) | 100-200ms |
| State change (card expand, tab) | 200-300ms |
| Screen transition | 250-400ms |
| Complex choreography | 400-700ms total |
Nothing over 1 second unless it's a loading indicator.
Easing Reference
| Context | Easing |
|---|---|
| Entering | ease-out (decelerate) |
| Leaving | ease-in (accelerate) |
| State change | ease-in-out |
| Micro-interaction | spring (stiffness 300-500) |
Stagger Patterns
- 50-80ms delay between items
- Maximum 5 items staggered, rest appear instantly
- Follow reading order
- Reveal hierarchy — important items first
Reduced Motion
prefers-reduced-motion: reduce means reduce, not remove.
| Standard | Reduced alternative |
|---|---|
| Slide in | Fade in |
| Scale with bounce | Instant appearance |
| Parallax scroll | Static |
| Staggered reveal | Simultaneous fade |
| Continuous pulse | Static state |
Every animation must have a reduced-motion alternative. No exceptions.
What NOT to Animate
- Text colour changes (photosensitive risk)
- Layout properties in performance paths (use transform)
- Anything that delays task completion
- Decorative loops without user control
Performance
Only animate: transform, opacity, filter. These are GPU-composited.
What You Deliver
- Animation specs with durations, easings, triggers
- Reduced-motion alternatives for every animation
- Performance annotations
- Sequence diagrams for complex choreography
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.
- 8d ago First seen · 82 lines · 41 tokens per session scan A 12f9902ae9c7
motion-choreography is a skill published in the GitHub repository Owl-Listener/designpowers (243 stars, last pushed 2mo ago), licensed MIT. It adds 41 tokens to every session and 550 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
Other skills, from other repositories
accessibility-a11y
Semantic HTML, keyboard navigation, focus states, ARIA labels, skip links, and WCAG contrast requirements. Use when ensuring accessibility compliance, implementing keyboard navigation, or adding screen reader support.
tailwind-shadcn
Tailwind CSS utility patterns with shadcn/ui component usage, theming via CSS variables, and responsive design. Use when styling components, installing shadcn components, implementing dark mode, or creating consistent design systems.
anti-slop-frontend
A mechanical, countable anti-slop checklist for AI-generated frontend. Catches the specific signatures an undirected model defaults to: AI-purple glows, Inter-everywhere, em-dashes, div-based fake screenshots, eyebrow-on-every-section, beige+brass "premium" palettes, generic Jane Doe / Acme data. Advisory layer that…
frontend-mockup-loop
Plan, build, and iterate UX-friendly frontend mockups via a ground→contract→mockup→test→fix→learn loop, acting as an expert UX designer who grounds every decision in externally documented public design rules (Nielsen heuristics, Laws of UX, WCAG, GOV.UK/USWDS/Material). Uses the bundled servemockup, scoremockup, and…
mcp-host-styling-integration
Integrates MCP App UI with host theming system. Applies host CSS variables, handles onhostcontextchanged, safe area insets, display mode detection, and fullscreen configuration.
theme-system
CSS custom properties theme architecture for 4 themes (studio, earth, athlete, gradient) with data-theme attribute switching and theme-aware components. Use when implementing theme switching, defining color schemes, or creating theme-responsive UI elements.