gsap-skills is a collection of official AI-agent skills that explain how to use GSAP, a JavaScript animation platform for creating timelines, tweens, and effects such as scroll-driven and path-based motion. It helps coding agents build GSAP animations in vanilla JavaScript and frameworks including React, Vue, and Svelte while following recommended API and performance practices. The catalogue contains the project's skills, instructions, and plugin.
Borrowing it
Nothing to install: this file belongs to greensock/gsap-skills. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/greensock/gsap-skills/main/.github/instructions/react.instructions.mdgit clone --depth 1 https://github.com/greensock/gsap-skillsWrote 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/instructions/greensock/gsap-skills/react)<a href="https://agentmods.dev/instructions/greensock/gsap-skills/react"><img src="https://agentmods.dev/badge/instructions/greensock/gsap-skills/react/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/instructions/greensock/gsap-skills/react"><img src="https://agentmods.dev/badge/instructions/greensock/gsap-skills/react.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 | $0.00358 | $0.00358 |
| Opus 5.5 | $0.00143 | $0.00143 |
| Sonnet 5.5 | $0.00072 | $0.00072 |
| Haiku 4.5 | $0.00036 | $0.00036 |
Grade A, and why
gsap-skills react.instructions.md 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 1mo 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.
What it actually says
GSAP in React — path-specific instructions
When writing or suggesting GSAP code in React/JSX/TSX files:
- Prefer useGSAP() from
@gsap/reactover rawuseEffectfor GSAP setup. Register the hook once:gsap.registerPlugin(useGSAP)(and any other plugins used). - Pass a scope (ref to container) so selectors are scoped:
useGSAP(() => { ... }, { scope: containerRef }). This avoids animating elements outside the component. - When targeting by ref, pass the DOM element (e.g.
ref.current), not the ref object. Wrong:gsap.to(myRef, ...). Right:gsap.to(myRef.current, ...). With useGSAP, the scope ref limits selectors to that subtree. - Rely on useGSAP’s automatic cleanup on unmount (reverts animations and kills ScrollTriggers). Do not leave ScrollTriggers or timelines running after unmount.
- Use contextSafe (returned from useGSAP) to wrap callbacks like
onCompleteso they no-op after unmount and avoid React state-update warnings. - By default useGSAP runs once (empty dependency array). To re-run when deps change, pass
{ dependencies: [dep1, dep2] }or{ revertOnUpdate: true }as the second argument. Put animation logic in the callback, not in a separate effect. - If not using useGSAP, use gsap.context() in useEffect and return a cleanup that calls
ctx.revert().
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.
- 1mo ago First seen · 16 lines · 358 tokens per session scan A 3cd8d5ad8428
gsap-skills react.instructions.md is an instructions file published in the GitHub repository greensock/gsap-skills (17,326 stars, last pushed 3mo ago), licensed MIT. It adds 358 tokens to every session, about $0.0014 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 2026-08-30.
Other instructions, from other repositories
vscode buildNext.instructions.md
Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).
next.js AGENTS.md
AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, cache eligibility and rollout and applying the notice (cutover).
langchain AGENTS.md
AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.
vscode copilot-instructions.md
Copilot instructions for microsoft/vscode, covering vs code copilot instructions, project overview, root folders, core architecture (src/ folder) and built-in extensions (extensions/ folder).
vscode model-prompts.instructions.md
Model-specific prompt authoring and registry guidelines.