optimize-web-animations

optimize-web-animations is a skill for Claude Code, Codex from akillness/jeo-skills. It costs 126 tokens per session (2,271 once invoked), scanned A, original, no licence file.

A frontend performance tool for finding slow or wasteful web animations, including CSS, canvas, WebGL, and animation libraries.

In plain words
What is it for?
It helps profile and improve animation loops, marquees, loading placeholders, timers, event listeners, observers, and visual effects.
Why use it?
It helps explain why animations become choppy, leak memory, or slow down during long sessions.

Skill for Claude CodeCodex

Written for Claude Code and Codex: allowed-tools in frontmatter, but also agents/openai.yaml present.

Good fit It helps profile and improve animation loops, marquees, loading placeholders, timers, event listeners, observers, and visual effects.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/akillness/jeo-skills/optimize-web-animations
Install

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.

Any agent
npx skills add akillness/jeo-skills --skill optimize-web-animations
Clone the repo
git clone --depth 1 https://github.com/akillness/jeo-skills

Made for: Claude Code, Codex.

Wrote 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.

agentmods badge for optimize-web-animations

README.md
[![agentmods](https://agentmods.dev/badge/skills/akillness/jeo-skills/optimize-web-animations/github.svg)](https://agentmods.dev/skills/akillness/jeo-skills/optimize-web-animations)
Your own site
<a href="https://agentmods.dev/skills/akillness/jeo-skills/optimize-web-animations"><img src="https://agentmods.dev/badge/skills/akillness/jeo-skills/optimize-web-animations/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.

agentmods 80×15 button for optimize-web-animations

Your own site · 80×15
<a href="https://agentmods.dev/skills/akillness/jeo-skills/optimize-web-animations"><img src="https://agentmods.dev/badge/skills/akillness/jeo-skills/optimize-web-animations.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 126 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,271 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00126 $0.02271
Opus 5 $0.00063 $0.01136
Sonnet 5 $0.00025 $0.00454
Haiku 4.5 $0.00013 $0.00227

Measured 7d ago against content hash cc35cdbdde11, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

optimize-web-animations 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 7d 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.

.agent-skills/optimize-web-animations/SKILL.md · 160 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

Files

What ships with it

3 files 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.

Changes

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.

  1. 7d ago First seen · 160 lines · 126 tokens per session scan A cc35cdbdde11

Subscribe to this mod's changes

optimize-web-animations is a skill published in the GitHub repository akillness/jeo-skills (45 stars, last pushed today), with no licence file. It adds 126 tokens to every session and 2,271 once invoked, about $0.0006 per session on Opus 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.