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 css-nativegit 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/css-native)<a href="https://agentmods.dev/skills/dylantarre/animation-principles/css-native"><img src="https://agentmods.dev/badge/skills/dylantarre/animation-principles/css-native/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/css-native"><img src="https://agentmods.dev/badge/skills/dylantarre/animation-principles/css-native.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 | $0.00018 | $0.00999 |
| Opus 5 | $0.00009 | $0.00500 |
| Sonnet 5 | $0.00004 | $0.00200 |
| Haiku 4.5 | $0.00002 | $0.00100 |
Grade A, and why
css-native 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 9d 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 — 149 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CSS Native Animation Principles
Implement all 12 Disney animation principles using CSS animations, transitions, and transforms.
1. Squash and Stretch
@keyframes squash-stretch {
0%, 100% { transform: scaleX(1) scaleY(1); }
50% { transform: scaleX(1.2) scaleY(0.8); }
}
.ball { animation: squash-stretch 0.3s ease-in-out; }
2. Anticipation
@keyframes anticipate-jump {
0% { transform: translateY(0); }
20% { transform: translateY(10px) scaleY(0.9); } /* wind up */
100% { transform: translateY(-100px); }
}
3. Staging
.hero { z-index: 10; filter: none; }
.background { z-index: 1; filter: blur(2px); opacity: 0.7; }
4. Straight Ahead / Pose to Pose
/* Pose to pose - define keyframes explicitly */
@keyframes walk-cycle {
0% { background-position: 0 0; }
25% { background-position: -100px 0; }
50% { background-position: -200px 0; }
75% { background-position: -300px 0; }
100% { background-position: -400px 0; }
}
5. Follow Through and Overlapping Action
.character { animation: move 0.5s ease-out; }
.hair { animation: move 0.5s ease-out 0.05s; } /* slight delay */
.cape { animation: move 0.5s ease-out 0.1s; }
6. Slow In and Slow Out
.element {
transition: transform 0.4s cubic-bezier(0.42, 0, 0.58, 1);
}
/* Or use: ease-in-out, ease-in, ease-out */
7. Arc
@keyframes arc-motion {
0% { transform: translate(0, 0); }
50% { transform: translate(100px, -80px); }
100% { transform: translate(200px, 0); }
}
/* Use offset-path for true arcs */
.element { offset-path: path('M0,100 Q100,0 200,100'); }
8. Secondary Action
.button:hover {
transform: scale(1.05);
}
.button:hover .icon {
animation: wiggle 0.3s ease-in-out;
}
9. Timing
.fast { animation-duration: 0.15s; }
.normal { animation-duration: 0.3s; }
.slow { animation-duration: 0.6s; }
.dramatic { animation-duration: 1.2s; }
10. Exaggeration
@keyframes exaggerated-bounce {
0%, 100% { transform: translateY(0) scale(1); }
50% { transform: translateY(-150px) scale(0.8, 1.3); }
}
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.
- 9d ago First seen · 149 lines · 18 tokens per session scan A f095f37737ae
css-native is a skill published in the GitHub repository dylantarre/animation-principles (81 stars, last pushed 8mo ago), licensed MIT. It adds 18 tokens to every session and 999 once invoked, about $0.0001 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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