gsap-vanilla SKILL.md skillA

gsap-vanilla from ucsandman/claude-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add ucsandman/claude-skills/gsap-vanilla@git:20260915.793ae04

Pins git:20260915.793ae04 in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
ucsandman/claude-skills
Path
gsap-vanilla/SKILL.md
Versions recorded
1
Latest version
git:20260915.793ae04, committed Sep 15, 2026
Size
8,116 bytes
Repository stars
5
License
MIT

Build or review GSAP animation on plain HTML, CSS, and JavaScript sites with no component framework: page load intros without a flash of settled content, exit animation before a link is followed, cross-document View Transitions with pageswap and pagereveal, back and forward with the bfcache, prerendered pages, animated show and hide, scroll-driven effects, and fetch plus pushState navigation by hand or with Swup, Barba, or Taxi. Use whenever a static site, a multi-page site, or a Vite or…

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.

What the file says

# GSAP Vanilla

Every animated page or component runs through the same lifecycle:

**mount → initial state → intro → settled → outro → end state → unmount**

On a plain site the browser owns mount and unmount. A page mounts when its document parses and unmounts when the next document replaces it, and nothing survives that swap: not a timeline, not a variable, not a listener. The five phases between belong to your animation code. This skill covers getting them right without a framework: first paint, navigation timing, history, interruptions, and cleanup. The user's request and the existing design decide how things look.

## Start with the project

1. Read repository instructions and the current code.
2. Find out how pages are produced: hand-written HTML, a static generator with no client framework, a bundler such as Vite with no UI framework, or a transition library such as Swup, Barba, or Taxi. If a component framework renders the pages, say this skill does not cover it and use that framework's skill.
3. Find out how GSAP loads: npm import, import map, or script tag. Keep it.
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add ucsandman/claude-skills/gsap-vanilla@sha256:66f6e452023bdf9d

The line at the top of this page pins the label git:20260915.793ae04, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_kqu7vai7h3bwmw3k.svg)](https://markdownregistry.com/a/art_kqu7vai7h3bwmw3k)

4 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 1 version of this file, committed on Sep 15, 2026.

versioncommittedcommitsizeaudit
git:20260915.793ae04 latest2026-09-15 793ae04 8,116 BA view

Audit of the latest version

A  17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (8116 bytes)
  • pass: No zero-width or bidi control characters
  • pass: No instruction hidden inside an HTML comment
  • pass: No link to an exfiltration or paste host
  • pass: No credential-shaped string
  • pass: No instruction to send local credentials anywhere
  • pass: No text hidden with inline styles
  • pass: No prompt-injection phrasing
  • pass: No curl or wget piped into a shell
  • pass: No recursive delete of root, home or parent
  • pass: No instruction to read or print local credentials
  • pass: No base64 blob over 200 characters
  • pass: No link to a raw IP address
  • pass: No script tag

Source

GitHub

ucsandman/claude-skills · 5 stars · license MIT · pushed 2026-09-19 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_kqu7vai7h3bwmw3k
GET https://markdownregistry.com/api/v1/resolve?ref=ucsandman/claude-skills/gsap-vanilla
GET https://markdownregistry.com/api/v1/blob/66f6e452023bdf9d92c1e055830fa091567258c5d91a3347ad6d5b418540086b

Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.

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Every file in ucsandman/claude-skills

Other files named gsap-vanilla

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