New: 97,000+ skills indexed from GitHub repos with 100+ stars · every skill safety-checkedBrowse top skillsTop skills
Esc to closeBrowse all skills
Submit a skillBrowse skills
Submit a skillBrowse skills

Agent skill

Animation Systems

by nirholas in nirholas/three.ws

A skill your agent uses when designing or implementing product-grade web motion like Stripe, Linear, Apple, and Vercel.

Apache-2.0Auto-check passedFrontend & Design

Install Animation Systems

skills CLI
$ npx skills add nirholas/three.ws --skill animation-systems -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install nirholas/three.ws animation-systems --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/nirholas/three.ws.git skills-src && mkdir -p .claude/skills && cp -r skills-src/third_party/designcode-agent-skills/agent-skills/web-design/animation-systems .claude/skills/animation-systems && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
animation-systems
GitHub stars
226
Used in
1 other repo
Token cost
~1.3k tokens
SKILL.md length
608 words
Files
4
Skills in repo
165
Repo updated
First seen
Licence
Apache-2.0

At a glance

A skill your agent uses when designing or implementing product-grade web motion like Stripe, Linear, Apple, and Vercel.

  • Works in 8 steps: Restraint → Clear choreography → Physical but not cartoony → …
  • Implementing product-grade web motion like Stripe
  • SKILL.md covers The goals (why motion exists), The Stripe/Linear/Apple/Vercel…, Motion primitives (build these… and Defaults (practical numbers), plus 4 more sections
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Animation Systems is an agent skill from nirholas/three.ws. Use when designing or implementing product-grade web motion like Stripe, Linear, Apple, and Vercel. Covers motion principles, easing/duration defaults, choreography patterns, scroll/hover interactions, performance, accessibility (reduced motion), and implementation guidance.

Its SKILL.md is about 1.3k tokens, which your agent loads only when the skill is triggered. The skill folder holds 4 other files (for example `demo/PROMPT.md`).

It sits in Frontend & Design, covering Accessibility. It works with Stripe and Vercel. The repository describes itself as: Open-source platform for 3D AI agents. Turn text or a photo into a rigged, animated GLB avatar, give it an LLM brain, memory and a wallet, and embed it anywhere with one web… The licence is Apache-2.0.

When your agent uses it

  • Implementing product-grade web motion like Stripe
  • Tasks that involve Accessibility

Example prompts

  • “/animation-systems”

Workflow steps

8 steps, taken from the step headings in SKILL.md.

  1. Restraint
  2. Clear choreography
  3. Physical but not cartoony
  4. Texture + depth (subtle)
  5. “Hero → supporting elements”
  6. “Section reveal on scroll”
  7. “Hover: lift + glow”
  8. “Focus ring + micro shift”

What it can do on your machine

Read from SKILL.md and the folder at commit 238ef60. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md.

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Animation Systems loads about 1.3k tokens when it runs. Until then it costs about 73 tokens; SKILL.md has 608 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~73
When it runs · the whole SKILL.md, loaded when a task matches
~1.3k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from nirholas/three.ws at commit 238ef60, republished under its Apache-2.0 licence (© nirholas). 608 words, ~1,288 tokens.

Download SKILL.mdSave it as .claude/skills/animation-systems/SKILL.md (or your agent's skills folder). This skill also uses 3 other files; get the full folder from GitHub.
name
animation-systems
description
Use when designing or implementing product-grade web motion like Stripe, Linear, Apple, and Vercel. Covers motion principles, easing/duration defaults, choreography patterns, scroll/hover interactions, performance, accessibility (reduced motion), and implementation guidance.

Animation Systems (Stripe × Linear × Apple × Vercel)

This skill helps you ship tasteful, product-grade motion. Not “more animation.” Better animation: clarity, hierarchy, feedback, and delight—without jank.

The goals (why motion exists)

Use animation to:

  1. Explain hierarchy (what matters)
  2. Confirm action (feedback)
  3. Guide attention (where to look next)
  4. Maintain continuity (spatial relationships)
  5. Add polish (craft signals)

If an animation doesn’t serve one of these, delete it.

The Stripe/Linear/Apple/Vercel style (shared traits)

1) Restraint
  • Fewer animations, better chosen.
  • One strong hero moment; the rest is supporting motion.
2) Clear choreography
  • Primary element moves first.
  • Secondary elements follow with small stagger.
  • Motion establishes a “reading order.”
3) Physical but not cartoony
  • Use easing that feels human (soft acceleration + gentle settle).
  • Avoid bouncy defaults for serious product UI.
4) Texture + depth (subtle)
  • Small parallax, soft shadows, blur fades, light beams.
  • Avoid heavy 3D unless it’s the hero.

Motion primitives (build these first)

Think in primitives you can reuse everywhere.

A) Fade + rise (default entrance)

Use for: text blocks, cards, modals.

  • Opacity: 0 → 1
  • Y: 12–24px → 0
  • Duration: 300–700ms depending on size
B) Scale + fade (micro emphasis)

Use for: popovers, toasts, selected states.

  • Scale: 0.98 → 1
  • Opacity: 0 → 1
C) Slide (navigation)

Use for: drawers, step transitions.

  • Use transform translate; avoid animating layout.
D) Morph / shared element (high craft)

Use for: tab indicators, expanding cards.

  • Requires consistent geometry + measured layout.

Defaults (practical numbers)

Use these as a starting system.

Durations (rule of thumb)
  • Micro (hover/press): 120–200ms
  • UI state change (toggle, select): 180–260ms
  • Small transitions (popover, toast): 220–320ms
  • Page section entrance: 400–800ms
  • Hero sequences: 800–1600ms (with internal beats)
Easing (safe set)

Pick a small set and reuse.

  • UI: ease-out with gentle settle
  • Emphasis: slightly stronger ease
  • Entering: ease-out
  • Exiting: ease-in (faster)

If implementing:

  • Use your animation library’s “power2.out / expo.out” equivalents.
  • Avoid elastic/bounce unless brand is playful.
Stagger
  • 40–90ms per element (text lines/cards)
  • Use smaller stagger on mobile

Choreography patterns

1) “Hero → supporting elements”
  • Hero visual animates in first.
  • Headline appears next.
  • CTA appears last.
2) “Section reveal on scroll”
  • Trigger when section is ~20–30% visible.
  • Animate once (don’t replay on tiny scroll).
3) “Hover: lift + glow”
  • Y: -2 to -6px
  • Shadow: subtle increase
  • Optional: border/gradient glow
Show full SKILL.md (244 more words)Show less
4) “Focus ring + micro shift”
  • For form fields: focus ring + tiny scale/translate for responsiveness.

Performance rules (non‑negotiable)

Animate the right properties

Prefer:

  • transform (translate/scale/rotate)
  • opacity

Avoid (unless necessary):

  • width/height/top/left
  • expensive filters on large areas
Respect the GPU
  • Clamp device pixel ratio in heavy canvases (1–2)
  • Keep blur subtle and small
  • Avoid many simultaneous animated shadows
Reduce reflows
  • Don’t measure layout every frame.
  • For scroll effects, use a library that batches reads/writes.

Accessibility: Reduced Motion

Always support prefers-reduced-motion.

Policy:

  • Keep content visible.
  • Replace motion with instant state + subtle opacity.
  • Disable scroll-scrub/pin.

Ask the user:

  • “Do you want a reduced-motion mode that disables all non-essential motion?”

Implementation guidance (library-agnostic)

For simple sites
  • CSS transitions for small hovers/toggles.
  • Use a single motion library (GSAP or Framer Motion) for complex sequences.
For product sites
  • Create a motion token set:
    • durations
    • easing curves
    • standard offsets (8/16/24px)
    • stagger defaults
For hero moments
  • Use timelines (or keyframes) with labeled beats.
  • Lock camera/scene movement first, then layer text.

What to ask the user

  • What’s the brand lane: Stripe (polished), Linear (minimal), Apple (cinematic), Vercel (developer/product)?
  • What are the key moments? (hero, scroll story, hover cards, nav transitions)
  • Any performance constraints? (mobile, low-end devices)
  • Reduced motion requirements?

Output format (when asked to “add Stripe/Linear-style animation”)

Return:

  1. Motion goals (what we’re trying to communicate)
  2. Motion tokens (durations + easing + offsets)
  3. A choreography plan (timeline beats)
  4. Implementation notes (perf + reduced motion)
  5. A small code recipe (CSS or GSAP/Framer depending on stack)

© nirholas, Apache-2.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

SKILL.md and 3 other files in third_party/designcode-agent-skills/agent-skills/web-design/animation-systems of nirholas/three.ws.

  • SKILL.md
  • demo/PROMPT.md
  • demo/index.html
  • demo/preview.jpg

Open the folder on GitHubat commit 238ef60

Used in 1 other repository

We found 1 copy of this SKILL.md (exact, near-identical or edited) in other folders, from 1 other GitHub owner. This page covers the copy in nirholas/three.ws, which our catalogue first saw on October 7, 2026.

Compare with similar skills

Animation Systems next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Animation Systems compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Animation Systems this skillnirholas/three.ws2261 repos~1.3kAutomated safety check: PassApache-2.0
Claude Designmateaix/mateclaw1.1k3 repos~4.9kAutomated safety check: PassApache-2.0
Popular Web Designsyc-software/qm15k—~2.9kAutomated safety check: PassMIT
Prismer Popular Web DesignsPrismer-AI/PrismerCloud1.6k3 repos~2.5kAutomated safety check: PassMIT
Popular Web DesignsTommy-yw/RunbookHermes5461 repos~2.4kAutomated safety check: PassMIT
Frontendjh941213/my-cc-harness126—~661Automated safety check: NotesNone

Similar skills

  • Claude Design

    mateaix/mateclaw

    Design one-off HTML artifacts (landing, deck, prototype). An agent skill from mateaix/mateclaw.

    1.1k GitHub starsUsed in 3 repos~4.9k tokens
    Frontend & DesignAuto-check passed

  • Popular Web Designs

    yc-software/qm

    54 real-world design systems (Stripe, Linear, Vercel, Notion, Apple…) as ready-to-paste HTML/CSS — exact colors, typography, components, and spacing for styling a page after a known brand.

    15k GitHub stars~2.9k tokensUpdated today
    Frontend & DesignAuto-check passed

  • Prismer Popular Web Designs

    Prismer-AI/PrismerCloud

    54 real design systems (Stripe, Linear, Vercel) as HTML/CSS.

    1.6k GitHub starsUsed in 3 repos~2.5k tokens
    Frontend & DesignAuto-check passed

  • Popular Web Designs

    Tommy-yw/RunbookHermes

    54 production-quality design systems extracted from real websites.

    546 GitHub starsUsed in 1 repo~2.4k tokens
    Frontend & DesignAuto-check passed

  • Frontend

    jh941213/my-cc-harness

    Big-tech style (Stripe, Vercel, Apple) UI development. An agent skill from jh941213/my-cc-harness.

    126 GitHub stars~661 tokensUpdated 2 mo ago
    Frontend & DesignAuto-check: notes

  • Web Interface Guidelines

    benchflow-ai/skillsbench

    Vercel's comprehensive UI guidelines for building accessible, performant web interfaces.

    1.8k GitHub stars~722 tokensUpdated 2 mo ago
    Frontend & DesignAuto-check passed

More from nirholas/three.ws

All 165 skills in this repo

  • Add Shader Cursor Trail

    nirholas/three.ws

    Add the Shaders WebGPU mouse effect used for the Tidal Commons hero: a white twinkling halftone cursor trail driven by ChromaFlow, masked through a DotGrid, finished with chromatic ripples and film…

    226 GitHub starsUsed in 1 repo~760 tokens
    Auto-check passed

  • Publish Project To GitHub

    nirholas/three.ws

    Package a finished local project into an intentional GitHub repository, create a strong README and visual preview, push it safely, configure a public GitHub Pages URL when the project is compatible…

    226 GitHub starsUsed in 1 repo~2.2k tokens
    Auto-check: notes

  • Audit Reference Originality

    nirholas/three.ws

    Audit a website or digital experience against its supplied source references for originality and plagiarism risk.

    226 GitHub starsUsed in 1 repo~1.8k tokens
    Auto-check passed

  • Build Daily Inspiration Sites

    nirholas/three.ws

    Turn a completed daily UI inspiration capture into exactly five original landing-page builds, one per separate Codex task, using Sites.

    226 GitHub starsUsed in 1 repo~1.9k tokens
    Auto-check passed

  • Write Like Meng On X

    nirholas/three.ws

    Write, rewrite, review, or continuously refine X/Twitter posts in Meng To's current voice using his deduplicated authored-post corpus, personal and product context, shared resources, and Content…

    226 GitHub starsUsed in 1 repo~2k tokens
    Auto-check passed

  • Browser Video Recording

    nirholas/three.ws

    Create polished 60 fps 4:3 4K browser screen-recording style videos from Codex in-app browser captures, with browser-only crop, natural macOS cursor styling, deliberate click choreography…

    226 GitHub starsUsed in 1 repo~1.5k tokens
    Auto-check passed

Works with

Categories

Questions about Animation Systems

What does Animation Systems do?

A skill your agent uses when designing or implementing product-grade web motion like Stripe, Linear, Apple, and Vercel. ws. Use when designing or implementing product-grade web motion like Stripe, Linear, Apple, and Vercel.

When should I use Animation Systems?

Animation Systems fits situations like: implementing product-grade web motion like Stripe; tasks that involve Accessibility.

How do I install Animation Systems in Claude Code?

Run `npx skills add nirholas/three.ws --skill animation-systems -a claude-code`. Or copy the skill folder (third_party/designcode-agent-skills/agent-skills/web-design/animation-systems in nirholas/three.ws) into .claude/skills/animation-systems in your project. Claude Code loads it when a task matches its description.

How do I install Animation Systems in Codex?

Run `npx skills add nirholas/three.ws --skill animation-systems -a codex`. Or copy the skill folder (third_party/designcode-agent-skills/agent-skills/web-design/animation-systems in nirholas/three.ws) into .agents/skills/animation-systems in your project. Codex loads it when a task matches its description.

Can I use Animation Systems in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add nirholas/three.ws --skill animation-systems -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/animation-systems, .gemini/skills/animation-systems, .github/skills/animation-systems and .opencode/skills/animation-systems in your project.

What does Animation Systems need to run?

SKILL.md names no scripts, command-line tools or credentials: Animation Systems is instructions for the agent only.

Does Animation Systems access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Animation Systems safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Animation Systems use?

Animation Systems is published under the Apache-2.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Animation Systems use?

About 1.3k tokens (SKILL.md is roughly 5.2k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Animation Systems?

Skills that share tags, products or a category with Animation Systems: Claude Design (mateaix/mateclaw, 1.1k stars), Popular Web Designs (yc-software/qm, 15k stars), Prismer Popular Web Designs (Prismer-AI/PrismerCloud, 1.6k stars) and Popular Web Designs (Tommy-yw/RunbookHermes, 546 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Animation Systems?

nirholas (a GitHub user) maintains it in nirholas/three.ws, which has 226 GitHub stars. The repository holds 165 skills in this directory. The repository was last updated on October 7, 2026.

Source: nirholas/three.ws on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.