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.
npx skills add calesthio/generative-media-skills --skill gsap-animation-compositiongit clone --depth 1 https://github.com/calesthio/generative-media-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/skills/calesthio/generative-media-skills/gsap-animation-composition)<a href="https://agentmods.dev/skills/calesthio/generative-media-skills/gsap-animation-composition"><img src="https://agentmods.dev/badge/skills/calesthio/generative-media-skills/gsap-animation-composition/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/skills/calesthio/generative-media-skills/gsap-animation-composition"><img src="https://agentmods.dev/badge/skills/calesthio/generative-media-skills/gsap-animation-composition.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00076 | $0.04400 |
| Opus 5.5 | $0.00030 | $0.01760 |
| Sonnet 5.5 | $0.00015 | $0.00880 |
| Haiku 4.5 | $0.00008 | $0.00440 |
Grade A, and why
gsap-animation-composition 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.
How it starts
The opening of the file, as written. The whole thing — 316 lines — stays where its author put it; the contents beside it link to each section on GitHub.
GSAP animation composition
Use GSAP when a media composition needs choreography that is awkward to express as isolated CSS transitions or simple frame interpolation: overlapping multi-beat sequences, per-character typography, SVG stroke drawing or shape morphing, curved paths, layout-state transitions, or a reusable motion language controlled from one playhead.
This skill covers GSAP as an animation engine inside media production. It does not replace the composition contract, edit decisions, audio timeline, asset ledger, accessibility review, or delivery workflow of the host renderer.
Evidence and version stance
The following labels are used throughout:
- Documented fact: behavior stated in official GSAP, W3C, or browser documentation.
- Production heuristic: a practical default that should yield to the brief, brand system, renderer, or measured result.
- Empirical observation: a result measured in the actual composition, preview, render, or target device.
GSAP APIs, plugin packaging, licensing, and framework integrations are volatile. The API and license facts below were verified on 2026-07-12. Re-check the installed GSAP version, official installation guidance, plugin documentation, and current license before production use.
Decide whether GSAP is warranted
Choose GSAP when at least one of these is central to the deliverable:
- many dependent animation beats must share labels, overlaps, or nested timelines;
- text must split into words, lines, or characters for designed reveals;
- SVG paths must draw, morph, or carry moving objects;
- a layout change must preserve apparent continuity through a FLIP transition;
- a browser-native composition needs one seekable playhead for preview and frame capture;
- responsive variants need related but materially different motion choreography.
Prefer a simpler mechanism when:
- one element only fades, translates, scales, or rotates;
- the host video runtime already provides concise frame interpolation or spring primitives;
- conventional editing, compositing, or keyframes will be easier for the receiving team to revise;
- the deliverable is a static image, an interchange asset, or a native application animation that will not run in a browser context.
What ships with it
1 file 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.
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.
- 2mo ago First seen · 316 lines · 76 tokens per session scan A 77b1974e58cf
gsap-animation-composition is a skill published in the GitHub repository calesthio/generative-media-skills (231 stars, last pushed 3mo ago), licensed MIT. It adds 76 tokens to every session and 4,400 once invoked, about $0.0003 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 2026-09-03.
gsap-animation-composition compared with skills from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| gsap-animation-compositioncalesthio/generative-media-skills | Skill | 231 | 3mo ago | MIT | A | 76 | Claude Code, Codex |
| web-design-engineerConardLi/garden-skills | Skill | 14k | 12d ago | MIT | A | 96 | Codex |
| web-designPrism-Shadow/penguin-harness | Skill | 3.2k | yesterday | Apache-2.0 | A | 51 | Claude Code, Codex |
| tailwind-design-systemcalesthio/OpenMontage | Skill | 77k | 3d ago | AGPL-3.0 | A | 42 | Claude Code, Codex |
| gsap-scrolltriggercalesthio/OpenMontage | Skill | 77k | 3d ago | AGPL-3.0 | A | 68 | Claude Code, Codex |
| remotion-to-hyperframescalesthio/OpenMontage | Skill | 77k | 3d ago | AGPL-3.0 | A | 215 | Claude Code, Codex |
| gsap-reactcalesthio/OpenMontage | Skill | 77k | 3d ago | AGPL-3.0 | A | 68 | Claude Code, Codex |