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web-animations

web-animations is a skill for Claude Code, Codex from hidobeats/hido-claude-kit. It costs 41 tokens per session (1,055 once invoked), scanned A, original, MIT.

A reference for choosing and implementing web animations, from simple CSS transitions to JavaScript, canvas, SVG, and 3D techniques.

In plain words
What is it for?
Use it to build hover effects, scroll reveals, page transitions, cursor interactions, path animations, and other browser-based motion.
Why use it?
It helps match an animation to the needed control and performance cost instead of adding unnecessary complexity.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

not rated 2repo 7mo ago A scan 41 tokens original MIT

Good fit Use it to build hover effects, scroll reveals, page transitions, cursor interactions, path animations, and other browser-based motion.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/hidobeats/hido-claude-kit/web-animations
View source ↗ hidobeats/hido-claude-kit
Install

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.

Any agent
npx skills add hidobeats/hido-claude-kit --skill web-animations
Clone the repo
git clone --depth 1 https://github.com/hidobeats/hido-claude-kit

Made for: Claude Code, Codex.

Wrote 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.

agentmods badge for web-animations

README.md
[![agentmods](https://agentmods.dev/badge/skills/hidobeats/hido-claude-kit/web-animations/github.svg)](https://agentmods.dev/skills/hidobeats/hido-claude-kit/web-animations)
Your own site
<a href="https://agentmods.dev/skills/hidobeats/hido-claude-kit/web-animations"><img src="https://agentmods.dev/badge/skills/hidobeats/hido-claude-kit/web-animations/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.

agentmods 80×15 button for web-animations

Your own site · 80×15
<a href="https://agentmods.dev/skills/hidobeats/hido-claude-kit/web-animations"><img src="https://agentmods.dev/badge/skills/hidobeats/hido-claude-kit/web-animations.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 41 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,055 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00041 $0.01055
Opus 5.5 $0.00016 $0.00422
Sonnet 5.5 $0.00008 $0.00211
Haiku 4.5 $0.00004 $0.00105

Measured 2mo ago against content hash 8c536ecaa808, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

web-animations 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 2mo 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.

skills/web-animations/SKILL.md · 85 lines

How it starts

The opening of the file, as written. The whole thing — 85 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Web Animations

Reference for choosing and implementing website animations. Detailed effect catalogs and code patterns are in references/ — load only what you need.

Technique Selection

Pick the lightest technique that achieves the effect:

CSS keyframes/transitions
  ↓ not enough control?
IntersectionObserver + CSS classes
  ↓ need scroll-linked progress?
GSAP + ScrollTrigger
  ↓ need physics or enter/exit orchestration?
Framer Motion (React) or Web Animations API (vanilla)
  ↓ need per-pixel control?
Canvas 2D + requestAnimationFrame
  ↓ need GPU shaders or 3D?
WebGL (Three.js / OGL / raw)
Technique Best For Dependencies Perf Cost
CSS keyframes Loops, hovers, simple transitions None Lowest
CSS transitions + JS class toggle Scroll reveals, state changes None Low
IntersectionObserver Viewport-triggered animations None Low
CSS Scroll-Driven Scroll progress, viewport reveals (no JS) None Lowest
View Transitions API Page/route transitions, cross-view morphs None Low
WAAPI (element.animate) JS-controlled transitions, sequencing None Low
SVG stroke/morph Path drawing, icon animations, shape morphing None or flubber ~5kb Low
GSAP + ScrollTrigger Scroll-scrubbed, staggered, timeline gsap ~30kb Medium
Framer Motion / motion React enter/exit, spring physics, layout motion ~50kb Medium
Lottie Pre-made illustration animations, loaders lottie-web ~50kb Medium
Rive Interactive state-machine animations @rive-app ~50kb Medium
Canvas 2D Particle systems, text distortion, trails None Medium-High
WebGL (OGL) Lightweight shaders, iridescence, chrome ogl ~30kb Medium-High
WebGL (Three.js) 3D scenes, heavy shader effects three ~150kb High

When NOT to Activate

  • Task is backend/API only (no UI)
  • User asks for static layout without motion
  • Simple CSS hover that Claude already knows

Read the full file on GitHub · 85 lines

Files

What ships with it

8 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.

Changes

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.

  1. 2mo ago First seen · 85 lines · 41 tokens per session scan A 8c536ecaa808

Subscribe to this mod's changes

web-animations is a skill published in the GitHub repository hidobeats/hido-claude-kit (2 stars, last pushed 7mo ago), licensed MIT. It adds 41 tokens to every session and 1,055 once invoked, about $0.0002 per session on Opus 5.5. 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 2026-08-31.

CSS and stylingDesign and UXFrontend
Related

web-animations compared with skills from other repositories

web-animations next to 6 skills from other repositories
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