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 blockmatic/basilic --skill emilkowal-animations-v1git clone --depth 1 https://github.com/blockmatic/basilicWrote 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/blockmatic/basilic/emilkowal-animations-v1)<a href="https://agentmods.dev/skills/blockmatic/basilic/emilkowal-animations-v1"><img src="https://agentmods.dev/badge/skills/blockmatic/basilic/emilkowal-animations-v1/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/blockmatic/basilic/emilkowal-animations-v1"><img src="https://agentmods.dev/badge/skills/blockmatic/basilic/emilkowal-animations-v1.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 | $0.00060 | $0.02333 |
| Opus 5 | $0.00030 | $0.01167 |
| Sonnet 5 | $0.00012 | $0.00467 |
| Haiku 4.5 | $0.00006 | $0.00233 |
Grade A, and why
emilkowal-animations-v1 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.
This is a copy
97% identical to emilkowal-animations — 2 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 — 155 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Emil Kowalski Animation Best Practices
Comprehensive animation guide for web interfaces based on Emil Kowalski's teachings, open-source libraries (Sonner, Vaul), and his animations.dev course. Contains 58 rules across 8 categories, prioritized by impact.
When to Apply
Reference these guidelines when:
- Adding animations to React components
- Choosing easing curves or timing values
- Implementing gesture-based interactions (swipe, drag)
- Building toast notifications or drawer components
- Optimizing animation performance
- Ensuring animation accessibility
- Expressing any of the above with Tailwind CSS v4 utilities (see the
tw-category)
Rule Categories by Priority
| Priority | Category | Impact | Prefix |
|---|---|---|---|
| 1 | Easing Selection | CRITICAL | ease- |
| 2 | Timing & Duration | CRITICAL | timing- |
| 3 | Property Selection | HIGH | props- |
| 4 | Transform Techniques | HIGH | transform- |
| 5 | Interaction Patterns | MEDIUM-HIGH | interact- |
| 6 | Strategic Animation | MEDIUM | strategy- |
| 7 | Accessibility & Polish | MEDIUM | polish- |
| 8 | Tailwind v4 Utilities | MEDIUM | tw- |
Quick Reference
1. Easing Selection (CRITICAL)
ease-out-default- Use ease-out as your default easingease-custom-curves- Use custom cubic-bezier over built-in CSSease-in-out-onscreen- Use ease-in-out for on-screen movementease-spring-natural- Use spring animations for natural motionease-spring-config- Configure springs with duration and bounceease-ios-drawer- Use iOS-style easing for drawer componentsease-context-matters- Match easing to animation context
2. Timing & Duration (CRITICAL)
timing-300ms-max- Keep UI animations under 300mstiming-faster-better- Faster animations improve perceived performancetiming-asymmetric- Use asymmetric timing for press and releasetiming-tooltip-delay- Delay initial tooltips, instant subsequent onestiming-drawer-500ms- Use 500ms duration for drawer animations
What ships with it
60 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.
- assets/templates/_template.md 938 B
- references/_sections.md 2.2 KB
- references/ease-context-matters.md 1.2 KB
- references/ease-custom-curves.md 1.4 KB
- references/ease-in-out-onscreen.md 1002 B
- references/ease-ios-drawer.md 952 B
- references/ease-out-default.md 1.3 KB
- references/ease-spring-config.md 1.5 KB
- references/ease-spring-natural.md 1.1 KB
- references/interact-damping.md 1.0 KB
- references/interact-friction-upward.md 1.0 KB
- references/interact-interruptible.md 1.0 KB
- references/interact-momentum-dismiss.md 1.0 KB
- references/interact-multitouch.md 1.1 KB
- references/interact-pointer-capture.md 1.1 KB
- references/interact-scroll-drag-conflict.md 1.1 KB
- references/interact-snap-points.md 1.2 KB
- references/interact-touch-hover.md 941 B
- references/polish-blur-bridge.md 1.0 KB
- references/polish-clip-path-tabs.md 1.2 KB
- references/polish-dont-remove-all.md 1.2 KB
- references/polish-framer-hook.md 1.1 KB
- references/polish-hover-gap-fill.md 1013 B
- references/polish-opacity-fallback.md 1.0 KB
- references/polish-reduced-motion.md 926 B
- references/polish-scroll-reveal.md 1.1 KB
- references/polish-stagger-children.md 1.2 KB
- references/polish-toast-stacking.md 1.2 KB
- references/props-avoid-css-variables.md 1.1 KB
- references/props-clip-path-performant.md 1.1 KB
- references/props-hardware-accelerated.md 1.2 KB
- references/props-transform-opacity.md 1.1 KB
- references/props-will-change.md 928 B
- references/strategy-cohesion.md 1.1 KB
- references/strategy-feedback-immediate.md 1.1 KB
- references/strategy-frequency-matters.md 1.2 KB
- references/strategy-keyboard-no-animate.md 1.1 KB
- references/strategy-marketing-exception.md 1.1 KB
- references/strategy-purpose-required.md 1.2 KB
- references/strategy-review-fresh-eyes.md 1.3 KB
- references/timing-300ms-max.md 1003 B
- references/timing-asymmetric.md 1.1 KB
- references/timing-drawer-500ms.md 943 B
- references/timing-faster-better.md 1000 B
- references/timing-tooltip-delay.md 1.1 KB
- references/transform-3d-preserve.md 1.2 KB
- references/transform-never-scale-zero.md 1.0 KB
- references/transform-origin-aware.md 1.4 KB
- references/transform-percentage-translate.md 976 B
- references/transform-scale-097.md 958 B
- references/transform-scale-children.md 1.3 KB
- references/transform-starting-style.md 1.3 KB
- references/tw-asymmetric-timing.md 1.4 KB
- references/tw-custom-easing-theme.md 1.6 KB
- references/tw-ease-duration-defaults.md 1.5 KB
- references/tw-origin-aware.md 1.3 KB
- references/tw-press-scale.md 1.4 KB
- references/tw-reduced-motion.md 1.5 KB
- references/tw-starting-enter.md 1.7 KB
- references/tw-will-change.md 1.4 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.
- 9d ago First seen · 155 lines · 60 tokens per session scan A 675559685ac4
emilkowal-animations-v1 is a skill published in the GitHub repository blockmatic/basilic (89 stars, last pushed 4d ago), licensed MIT. It adds 60 tokens to every session and 2,333 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. It is 97% identical to emilkowal-animations, differing in 2 lines, and is treated as a copy.
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