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/inclusive-design-skills --skill motion-sensitivitygit clone --depth 1 https://github.com/Owl-Listener/inclusive-design-skillsWrote 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/inclusive-design-skills/motion-sensitivity)<a href="https://agentmods.dev/skills/owl-listener/inclusive-design-skills/motion-sensitivity"><img src="https://agentmods.dev/badge/skills/owl-listener/inclusive-design-skills/motion-sensitivity/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/owl-listener/inclusive-design-skills/motion-sensitivity"><img src="https://agentmods.dev/badge/skills/owl-listener/inclusive-design-skills/motion-sensitivity.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 | $0.00080 | $0.00680 |
| Opus 5 | $0.00040 | $0.00340 |
| Sonnet 5 | $0.00016 | $0.00136 |
| Haiku 4.5 | $0.00008 | $0.00068 |
Grade A, and why
motion-sensitivity 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 11d 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 — 80 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Motion Sensitivity Design
Design motion that serves function without causing harm. For people with vestibular disorders, the wrong animation isn't just annoying — it can trigger vertigo, nausea, migraines, or seizures that last hours or days.
Who This Is For
- People with vestibular disorders (estimated 35% of adults over 40)
- People with migraine conditions triggered by visual motion
- People with photosensitive epilepsy (flashing triggers seizures)
- People experiencing concussion recovery
- People with anxiety disorders (unexpected motion increases stress)
- Anyone experiencing motion sickness
Dangerous Motion to Avoid
Never Use
- Flashing content faster than 3 times per second (seizure risk — this is a WCAG Level A requirement, not optional)
- Large-area flashing in any colour (even at slower rates)
- Strobing or pulsing effects
Use With Extreme Caution
- Parallax scrolling (triggers vestibular responses)
- Scroll-jacking (overriding native scroll behaviour)
- Zoom animations that scale the full viewport
- Spinning or rotating elements
- Auto-advancing carousels or slideshows
- Background video
Design Patterns
Respect prefers-reduced-motion
This is the minimum. Non-negotiable.
When prefers-reduced-motion is set:
- Replace animated transitions with instant state changes
- Stop all autoplay video and animation
- Disable parallax effects
- Disable scroll-triggered animations
- Keep essential motion only (loading indicators) and simplify them
Motion Budget
Not all motion is equal. Allocate motion deliberately:
- Essential motion: loading spinners, progress bars, state transitions that communicate meaning. Keep these but simplify.
- Helpful motion: hover effects, subtle transitions that aid understanding. Keep but make instant when reduced motion is on.
- Decorative motion: background animations, entrance effects, parallax. Remove entirely.
Safe Animation Principles
- Keep animations short (under 300ms for transitions)
- Use opacity and colour changes instead of position changes where possible (less vestibular impact)
- Avoid animating large areas of the screen simultaneously
- Provide play/pause controls on all moving content
- Never autoplay anything — let the user opt in
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.
- 11d ago First seen · 80 lines · 80 tokens per session scan A 5faddb723f51
motion-sensitivity is a skill published in the GitHub repository Owl-Listener/inclusive-design-skills (98 stars, last pushed 3mo ago), licensed MIT. It adds 80 tokens to every session and 680 once invoked, about $0.0004 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.
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