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 dylantarre/animation-principles --skill slow-800-1200msgit clone --depth 1 https://github.com/dylantarre/animation-principlesWrote 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/dylantarre/animation-principles/slow-800-1200ms)<a href="https://agentmods.dev/skills/dylantarre/animation-principles/slow-800-1200ms"><img src="https://agentmods.dev/badge/skills/dylantarre/animation-principles/slow-800-1200ms/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/dylantarre/animation-principles/slow-800-1200ms"><img src="https://agentmods.dev/badge/skills/dylantarre/animation-principles/slow-800-1200ms.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- Socket pass
- Snyk pass
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 | $0.00035 | $0.00794 |
| Opus 5 | $0.00017 | $0.00397 |
| Sonnet 5 | $0.00007 | $0.00159 |
| Haiku 4.5 | $0.00003 | $0.00079 |
Grade A, and why
slow-800-1200ms 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 — 106 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Slow Animations (800-1200ms)
At 800-1200ms, animation approaches cinematic territory. This is deliberate, intentional motion for moments that matter. Users are expected to stop and watch.
Disney Principles at Slow Speed
Cinematic Application
Squash & Stretch: Pronounced and characterful - 25-35% deformation tells stories. Objects have weight and personality.
Anticipation: Full theatrical wind-up - 200-300ms preparation. The audience knows something is coming.
Staging: Scene composition - think in terms of camera and stage. Clear visual hierarchy with entrance order.
Straight Ahead/Pose to Pose: Pose to pose essential - 4-6 key poses for 1 second of motion.
Follow Through: Extended overlap - different elements settle at clearly different times, 200-300ms of settling.
Slow In/Slow Out: Dramatic curves - strong ease-in creates weight, strong ease-out creates impact.
Arcs: Sweeping curves - motion paths are clearly curved, visible trajectories.
Secondary Action: Complex layering - multiple levels of supporting action enhance primary motion.
Timing: 48-72 frames at 60fps. Near-film quality frame counts.
Exaggeration: Theatrical - push proportions and motion for emotional impact.
Solid Drawing: Full dimensional transforms - parallax, depth, 3D rotation.
Appeal: Emotional connection - slow motion creates intimacy with the interface.
Easing Recommendations
/* Dramatic, weighted motion */
transition: all 1000ms cubic-bezier(0.16, 1, 0.3, 1);
/* Graceful entrance */
transition: all 900ms cubic-bezier(0.22, 1, 0.36, 1);
/* Heavy, impactful landing */
transition: transform 1100ms cubic-bezier(0.33, 1, 0.68, 1);
/* Elastic, memorable */
transition: all 1000ms cubic-bezier(0.68, -0.6, 0.32, 1.6);
Best Use Cases
- App launch sequences
- Major feature reveals
- Storytelling moments
- Error recovery animations
- Achievement unlocks
- Tutorial sequences
- First-run experiences
- Section transitions in presentations
- Loading state to content reveals
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 · 106 lines · 35 tokens per session scan A a9950d63eb80
slow-800-1200ms is a skill published in the GitHub repository dylantarre/animation-principles (81 stars, last pushed 8mo ago), licensed MIT. It adds 35 tokens to every session and 794 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 2026-09-03.
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