Agent skill

Gsap

A skill your agent uses when you need to add or debug professional web animations with GSAP (timelines, ScrollTrigger, stagger, transforms) in HTML/CSS/JS/React.

Apache-2.0Auto-check passedFrontend & Design

Install Gsap

skills CLI

$ npx skills add nirholas/three.ws --skill gsap -a claude-code

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

GitHub CLI

$ gh skill install nirholas/three.ws gsap --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/gsap .claude/skills/gsap && 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/

Paste into Claude Code

Install the "gsap" agent skill from https://github.com/nirholas/three.ws/tree/main/third_party/designcode-agent-skills/agent-skills/web-design/gsap into .claude/skills/gsap/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "gsap", then confirm the skill loads.

Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

$skill-installer

$skill-installer install https://github.com/nirholas/three.ws/tree/main/third_party/designcode-agent-skills/agent-skills/web-design/gsap

Type this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.

skills CLI

$ npx skills add nirholas/three.ws --skill gsap -a codex

Project install goes to .agents/skills/; add -g for ~/.codex/skills/.

GitHub CLI

$ gh skill install nirholas/three.ws gsap --agent codex

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

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

Use ~/.agents/skills/ instead of .agents/skills for a personal install.

Codex skills documentation · loads skills from .agents/skills/

Paste into Codex

Install the "gsap" agent skill from https://github.com/nirholas/three.ws/tree/main/third_party/designcode-agent-skills/agent-skills/web-design/gsap into .agents/skills/gsap/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "gsap", then confirm the skill loads.

Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add nirholas/three.ws --skill gsap -a cursor

Project install goes to .agents/skills/; add -g for ~/.cursor/skills/.

GitHub CLI

$ gh skill install nirholas/three.ws gsap --agent cursor

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

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

Use ~/.cursor/skills/ instead of .cursor/skills for a personal install.

Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/

Paste into Cursor

Install the "gsap" agent skill from https://github.com/nirholas/three.ws/tree/main/third_party/designcode-agent-skills/agent-skills/web-design/gsap into .cursor/skills/gsap/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "gsap", then confirm the skill loads.

Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

gemini skills install

$ gemini skills install https://github.com/nirholas/three.ws.git --path third_party/designcode-agent-skills/agent-skills/web-design/gsap

--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.

skills CLI

$ npx skills add nirholas/three.ws --skill gsap -a gemini-cli

Project install goes to .agents/skills/; add -g for ~/.gemini/skills/.

GitHub CLI

$ gh skill install nirholas/three.ws gsap --agent gemini-cli

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

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

Use ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.

Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/

Paste into Gemini CLI

Install the "gsap" agent skill from https://github.com/nirholas/three.ws/tree/main/third_party/designcode-agent-skills/agent-skills/web-design/gsap into .gemini/skills/gsap/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "gsap", then confirm the skill loads.

Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

GitHub CLI

$ gh skill install nirholas/three.ws gsap

Installs for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).

skills CLI

$ npx skills add nirholas/three.ws --skill gsap -a github-copilot

Project install goes to .agents/skills/; add -g for ~/.copilot/skills/.

Manual copy

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

Use ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.

GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/

Paste into GitHub Copilot

Install the "gsap" agent skill from https://github.com/nirholas/three.ws/tree/main/third_party/designcode-agent-skills/agent-skills/web-design/gsap into .github/skills/gsap/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "gsap", then confirm the skill loads.

GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add nirholas/three.ws --skill gsap -a opencode

OpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.

GitHub CLI

$ gh skill install nirholas/three.ws gsap --agent opencode

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

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

Use ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.

OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/

Paste into OpenCode

Install the "gsap" agent skill from https://github.com/nirholas/three.ws/tree/main/third_party/designcode-agent-skills/agent-skills/web-design/gsap into .opencode/skills/gsap/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "gsap", then confirm the skill loads.

OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

Facts

Skill name: gsap
GitHub stars: 226
Used in: 1 other repo
Token cost: ~769 tokens
SKILL.md length: 228 words
Files: 9
Skills in repo: 165
Repo updated: Oct 7, 2026
First seen: Oct 7, 2026
Licence: Apache-2.0

At a glance

A skill your agent uses when you need to add or debug professional web animations with GSAP (timelines, ScrollTrigger, stagger, transforms) in HTML/CSS/JS/React.

Works in 3 steps: Hero entrance (stagger) → Sequenced timeline → Scroll-scrub pinned section
You need to add
SKILL.md covers When to use, Key concepts & APIs, Common pitfalls (and fixes) and Quick recipes, plus 1 more section
Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Gsap is an agent skill from nirholas/three.ws. Use when you need to add or debug professional web animations with GSAP (timelines, ScrollTrigger, stagger, transforms) in HTML/CSS/JS/React. Includes patterns for smooth motion, performance, and common pitfalls.

Its SKILL.md is about 770 tokens, which your agent loads only when the skill is triggered. The skill folder holds 10 other files (for example `REFERENCES.md`, `demo/PROMPT.md` and `demo/source.json`).

It sits in Frontend & Design, covering Web animation and motion. It works with GSAP and React. 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

You need to add
Debug professional web animations with GSAP (timelines
Transforms) in HTML/CSS/JS/React

Example prompts

“/gsap”

Workflow steps

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

Hero entrance (stagger)
Sequenced timeline
Scroll-scrub pinned section

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 (its code samples are javascript).
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

Gsap loads about 769 tokens when it runs. Until then it costs about 54 tokens; SKILL.md has 228 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it: ~54
When it runs · the whole SKILL.md, loaded when a task matches: ~769

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). 228 words, ~769 tokens.

Download SKILL.mdSave it as .claude/skills/gsap/SKILL.md (or your agent's skills folder). This skill also uses 8 other files; get the full folder from GitHub.

name: gsap
description: Use when you need to add or debug professional web animations with GSAP (timelines, ScrollTrigger, stagger, transforms) in HTML/CSS/JS/React. Includes patterns for smooth motion, performance, and common pitfalls.

GSAP (GreenSock) — Web Animation Skill

When to use

High-quality UI/motion design: entrances, micro-interactions, page transitions
Timeline-based sequences (vs. scattered CSS transitions)
Scroll-driven storytelling (with ScrollTrigger)
Complex easing, staggering, orchestration across many elements

Key concepts & APIs

Tweens:
- gsap.to(targets, vars)
- gsap.from(targets, vars)
- gsap.fromTo(targets, fromVars, toVars)
Timelines:
- const tl = gsap.timeline({ defaults, repeat, yoyo, paused })
- Chain: tl.to(...).from(...).addLabel('x').add(() => ...)
- Position parameter: absolute 1.2, relative "+=0.5", overlap "-=0.3", label "intro"
Eases: ease: "power2.out", "expo.inOut", "elastic.out(1, 0.3)"
Staggers: stagger: 0.05 or { each, from: "start|center|end|random", grid }
Performance-friendly properties:
- Prefer transforms (x, y, scale, rotation) and opacity (autoAlpha)
ScrollTrigger (plugin):
- gsap.registerPlugin(ScrollTrigger)
- Inline: gsap.to(".box", { scrollTrigger: ".box", x: 500 })
- Advanced: scrollTrigger: { trigger, start, end, scrub, pin, snap, markers }
- Standalone: ScrollTrigger.create({ trigger, start, end, onUpdate, onToggle })

Common pitfalls (and fixes)

Animating layout properties (top/left/width/height) → jank
- Use transforms, add will-change: transform, avoid forced reflow.
ScrollTrigger “not firing” due to wrong trigger sizing/overflow containers
- Ensure trigger exists, has height, and check scroll container (nested scrolling needs config).
Not cleaning up in SPA/React
- Use gsap.context() and revert on unmount; kill triggers (ScrollTrigger.getAll().forEach(t => t.kill())) if needed.
FOUC / measuring before fonts/images load
- Initialize after layout is stable; run ScrollTrigger.refresh() after images load.

Quick recipes

1) Hero entrance (stagger)

gsap.from(".hero [data-anim]", {
  y: 24,
  autoAlpha: 0,
  duration: 0.8,
  ease: "power2.out",
  stagger: 0.06,
});

2) Sequenced timeline

const tl = gsap.timeline({ defaults: { ease: "power2.out", duration: 0.6 } });
tl.from(".nav", { y: -20, autoAlpha: 0 })
  .from(".hero-title", { y: 30, autoAlpha: 0 }, "-=0.2")
  .from(".hero-cta", { scale: 0.95, autoAlpha: 0 }, "-=0.2");

3) Scroll-scrub pinned section

gsap.registerPlugin(ScrollTrigger);

gsap.timeline({
  scrollTrigger: {
    trigger: ".story",
    start: "top top",
    end: "+=800",
    scrub: 1,
    pin: true,
  },
}).to(".story .panel", { xPercent: -200 });

What to ask the user (if requirements unclear)

Is this a static site or SPA (React/Next/Vue)? Any page transitions?
Do we need scroll-driven sections (pin/scrub/snap)?
Performance constraints (mobile support, reduced motion)?

Files

SKILL.md and 8 other files in third_party/designcode-agent-skills/agent-skills/web-design/gsap of nirholas/three.ws.

SKILL.md
REFERENCES.md
demo/PROMPT.md
demo/assets/page-01-4f5668c5-fc4a-44e0-bc5e-a664189d3c31-800w.jpg
demo/assets/page-02-0d868fef-f560-45ca-ab35-5dad4fc29059-800w.webp
demo/assets/source-preview.jpg
demo/index.html
demo/preview.jpg
demo/source.json

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.

MengTo/Skillsagent-skills/web-design/gsap

Compare with similar skills

Gsap 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.

Gsap compared with similar skills
Skill	Stars	Used in	Tokens	Auto-check	Licence	Repo updated
Gsap this skillnirholas/three.ws	226	1 repos	~769	Automated safety check: Pass	Apache-2.0	today
GSAP Core Animationgreensock/gsap-skills	16k	4 repos	~3.7k	Automated safety check: Pass	MIT	2 mo ago
GSAP for Reactgreensock/gsap-skills	16k	4 repos	~1.6k	Automated safety check: Pass	MIT	2 mo ago
Silk Designbendrape1-byte/silk-design	138	—	~1.8k	Automated safety check: Pass	MIT	1 mo ago
GSAP Plugins Guidegreensock/gsap-skills	16k	4 repos	~5.4k	Automated safety check: Warn	MIT	2 mo ago
Phantom Motionpixelxzen/phantom-motion	185	—	~1k	Automated safety check: Pass	Apache-2.0	4 mo ago

Similar skills

GSAP Core Animation
greensock/gsap-skills
Covers the GSAP core API for tweens, easing, staggers, defaults and matchMedia, and when to choose GSAP over CSS animations or other JavaScript animation libraries.
16k GitHub starsUsed in 4 repos~3.7k tokens
Frontend & DesignAuto-check passed
GSAP for React
greensock/gsap-skills
Shows how to run GSAP animations in React and Next.js with the useGSAP hook, refs, scoped selectors and automatic cleanup on unmount.
16k GitHub starsUsed in 4 repos~1.6k tokens
Frontend & DesignAuto-check passed
Silk Design
bendrape1-byte/silk-design
Build websites and web UI with smooth, polished, high-end motion by default — the buttery feel of premium sites, not static slop.
138 GitHub stars~1.8k tokensUpdated 1 mo ago
Frontend & DesignAuto-check passed
GSAP Plugins Guide
greensock/gsap-skills
Covers GSAP plugin use: registration, scroll, Flip, Draggable, SVG, text, physics and easing plugins, with the current free licensing and npm install guidance.
16k GitHub starsUsed in 4 repos~5.4k tokens
Frontend & DesignAuto-check: warnings
Phantom Motion
pixelxzen/phantom-motion
交互式动态视觉叙事生成器 v11.0 (Hybrid Drive Edition)。基于用户输入的任意主题关键词，通过多轮交互式对话收集需求，利用 React 19 + Tailwind 4 驱动的 Minimal Mono 极简编辑器，实时操纵隔离在 Iframe 中的硬核 GSAP/WebGL 影视级叙事引擎。
185 GitHub stars~1k tokensUpdated 4 mo ago
Frontend & DesignAuto-check passed
Anime.js Animation Guide
freshtechbro/claudedesignskills
Guides use of Anime.js for timeline sequences, stagger effects, SVG morphing and keyframe animation on DOM elements, CSS, SVG and JavaScript objects.
986 GitHub stars~2.7k tokensUpdated 10 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

Questions about Gsap

What does Gsap do?

A skill your agent uses when you need to add or debug professional web animations with GSAP (timelines, ScrollTrigger, stagger, transforms) in HTML/CSS/JS/React. ws. Use when you need to add or debug professional web animations with GSAP (timelines, ScrollTrigger, stagger, transforms) in HTML/CSS/JS/React.

When should I use Gsap?

Gsap fits situations like: you need to add; debug professional web animations with GSAP (timelines; transforms) in HTML/CSS/JS/React.

How do I install Gsap in Claude Code?

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

How do I install Gsap in Codex?

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

Can I use Gsap 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 gsap -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/gsap, .gemini/skills/gsap, .github/skills/gsap and .opencode/skills/gsap in your project.

What does Gsap need to run?

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

Does Gsap 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 Gsap 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 Gsap use?

Gsap 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 Gsap use?

About 769 tokens (SKILL.md is roughly 3.1k 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 Gsap?

Skills that share tags, products or a category with Gsap: GSAP Core Animation (greensock/gsap-skills, 16k stars), GSAP for React (greensock/gsap-skills, 16k stars), Silk Design (bendrape1-byte/silk-design, 138 stars) and GSAP Plugins Guide (greensock/gsap-skills, 16k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Gsap?

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.

Install Gsap

Facts

At a glance

What it does

When your agent uses it

Example prompts

Workflow steps

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

GSAP (GreenSock) — Web Animation Skill

When to use

Key concepts & APIs

Common pitfalls (and fixes)

Quick recipes

1) Hero entrance (stagger)

2) Sequenced timeline

3) Scroll-scrub pinned section

What to ask the user (if requirements unclear)

Files

Used in 1 other repository

Compare with similar skills

Similar skills

More from nirholas/three.ws

Related

Questions about Gsap