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 cards-containersgit 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/cards-containers)<a href="https://agentmods.dev/skills/dylantarre/animation-principles/cards-containers"><img src="https://agentmods.dev/badge/skills/dylantarre/animation-principles/cards-containers/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/cards-containers"><img src="https://agentmods.dev/badge/skills/dylantarre/animation-principles/cards-containers.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 | $0.00023 | $0.00644 |
| Opus 5 | $0.00012 | $0.00322 |
| Sonnet 5 | $0.00005 | $0.00129 |
| Haiku 4.5 | $0.00002 | $0.00064 |
Grade A, and why
cards-containers 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 — 76 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Card & Container Animation Principles
Apply Disney's 12 principles to cards and containers for engaging, dimensional interfaces.
Principles Applied to Cards
1. Squash & Stretch
Cards can subtly compress on drag-start and stretch when released. Keep it minimal: 2-3% scale change maximum.
2. Anticipation
Before expanding a card to detail view, briefly scale down (0.98) for 50ms, then expand. Prepares user for the transformation.
3. Staging
The card being interacted with should lift above others via z-index and shadow. Dim or blur background cards to focus attention.
4. Straight Ahead & Pose to Pose
Define clear states: resting, hovered, selected, expanded. Pose-to-pose transitions between these defined keyframes.
5. Follow Through & Overlapping Action
Card content (text, images, icons) should lag slightly behind card movement. Stagger by 20-40ms for natural feel.
6. Ease In & Ease Out
Card lifts use ease-out, card settles use ease-in-out. Never linear. cubic-bezier(0.25, 0.1, 0.25, 1) for smooth lifts.
7. Arcs
When cards reorder (drag-and-drop), they should follow curved paths, not straight lines. Add slight rotation during movement.
8. Secondary Action
While card lifts (primary), shadow expands and blurs (secondary). Image inside can subtle zoom. Border can glow.
9. Timing
- Hover lift: 200-250ms
- Selection: 150ms
- Expand to detail: 300-400ms
- Reorder/shuffle: 250-350ms
- Stagger between cards: 50-75ms
10. Exaggeration
Hover shadows can extend 2-3x normal depth. Selected cards can lift 8-12px. Keep proportional to card size.
11. Solid Drawing
Maintain consistent border-radius ratios when scaling. Shadows should always come from same light source. Preserve aspect ratios.
12. Appeal
Rounded corners feel approachable, subtle shadows add premium feel. Smooth transitions build trust. Cards should feel like physical objects.
CSS Implementation
.card {
transition: transform 250ms ease-out,
box-shadow 250ms ease-out;
}
.card:hover {
transform: translateY(-8px) scale(1.02);
box-shadow: 0 12px 40px rgba(0,0,0,0.15);
}
.card-content {
transition: transform 280ms ease-out; /* slight lag */
}
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 · 76 lines · 23 tokens per session scan A 22728ccb035d
cards-containers is a skill published in the GitHub repository dylantarre/animation-principles (80 stars, last pushed 8mo ago), licensed MIT. It adds 23 tokens to every session and 644 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.
Other skills, from other repositories
baseline-ui
Quickly deslop UI code by fixing spacing, hierarchy, typography, and small layout issues. Use when the interface needs a fast cleanup or polish pass.
frontend-design
A guide for building polished web interfaces such as pages, dashboards, applications, posters, and reusable React or Vue components. It covers visual direction, layout, typography, colors, animation, accessibility, and working HTML, CSS, or JavaScript code.
shadcn-ui
Provides complete shadcn/ui component library patterns including installation, configuration, and implementation of accessible React components. Use when setting up shadcn/ui, installing components, building forms with React Hook Form and Zod, customizing themes with Tailwind CSS, or implementing UI patterns like…
tailwind-design-system
Skill for creating and managing a Design System using Tailwind CSS and shadcn/ui. Use when defining design tokens, setting up theming with CSS variables, building a consistent UI component library, initializing a design system configuration, or wrapping shadcn/ui components into design system primitives.
migrate
Apply DESIGN, canon, and modules to every page in the inventory, producing a deployable static HTML site. Use to migrate or render the whole captured site into the redesigned static tree ("migrate the pages", "render the migrated site", "apply the design to all pages", "build the deployable site", "convert the…
antfu-design
Use this when building interfaces with UnoCSS in any framework (React, Vue, Svelte, Solid, or plain HTML), from dense devtools panels to landing pages. Read core-design-read first to set the direction, then apply the token system plus the polish and anti-slop rules.