motion-performance-qa

motion-performance-qa is a skill for Codex from TheGoat395/Codex-Skills. It costs 12 tokens per session (190 once invoked), scanned A, original, MIT.

A checklist and process for checking animation-heavy websites and apps for slow or uneven motion, layout shifts, memory leaks, cleanup errors, accessibility gaps, and mobile problems.

In plain words
What is it for?
Use it after adding animations, scrolling effects, page transitions, hover states, carousels, WebGL synchronization, observers, timers, or animation loops.
Why use it?
It helps find issues that can make animated interfaces feel slow, unstable, or difficult to use, including missing support for reduced motion.

Skill for Codex

Written for Codex: agents/openai.yaml present. Also seen: $skill-name invocation.

Good fit Use it after adding animations, scrolling effects, page transitions, hover states, carousels, WebGL synchronization, observers, timers, or animation loops.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/thegoat395/codex-skills/motion-performance-qa
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 TheGoat395/Codex-Skills --skill motion-performance-qa
Clone the repo
git clone --depth 1 https://github.com/TheGoat395/Codex-Skills

Made for: 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 motion-performance-qa

README.md
[![agentmods](https://agentmods.dev/badge/skills/thegoat395/codex-skills/motion-performance-qa.svg)](https://agentmods.dev/skills/thegoat395/codex-skills/motion-performance-qa)
Your own site
<a href="https://agentmods.dev/skills/thegoat395/codex-skills/motion-performance-qa"><img src="https://agentmods.dev/badge/skills/thegoat395/codex-skills/motion-performance-qa.svg" alt="Measured on agentmods" height="20"></a>
Per session 12 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 190 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. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
Origin original 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 $0.00012 $0.00190
Opus 5 $0.00006 $0.00095
Sonnet 5 $0.00002 $0.00038
Haiku 4.5 $0.00001 $0.00019

Measured 2d ago against content hash 02f7f678a3ed, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

motion-performance-qa 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 2d 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.

skills/motion-performance-qa/SKILL.md · 23 lines

What it actually says

Motion Performance QA

Use This Skill

Use this skill for release-level coverage across the complete motion system, not for diagnosing one isolated jank symptom.

Scoped execution

Apply the shared web contract once when execution crosses phases; reuse it if already read. Load only the specialist guidance relevant to the requested surface and deliverable.

Required Reference

Read references/motion-performance-qa-guide.md before making architectural or visible UI changes with this skill.

Scope and evidence

Use for a substantial motion-system review or pre-delivery motion audit. A single measured hitch belongs to $animation-jank-qa; preserve resize, route return, cleanup and reduced-motion checks where relevant. Review-only does not implement motion.

Files

What ships with it

2 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. 2d ago Changed · -63 tokens per session 02f7f678a3ed
  2. 8d ago First seen · 23 lines · 75 tokens per session scan A 04932321cfdd

Subscribe to this mod's changes

motion-performance-qa is a skill published in the GitHub repository TheGoat395/Codex-Skills (122 stars, last pushed 2d ago), licensed MIT. It adds 12 tokens to every session and 190 once invoked, about $0.0001 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 2026-08-30.

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