review-animations

review-animations is a skill for Claude Code, Codex from ahonn/dotfiles. It costs 34 tokens per session (1,920 once invoked), scanned A, a copy of review-animations, MIT.

A code-review skill focused only on animation and motion code in a change. It checks whether transitions, gestures, timing, and performance meet defined design standards.

In plain words
What is it for?
Use it to review animations in a code diff and report issues that need correction. It does not review general code or implement fixes.
Why use it?
It helps catch motion that feels slow, starts from the wrong place, runs too often, or causes dropped frames before it reaches users.

Skill for Claude CodeCodex

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.

agentmods
npx agentmods add skills/ahonn/dotfiles/review-animations
Any agent
npx skills add ahonn/dotfiles --skill review-animations
Clone the repo
git clone --depth 1 https://github.com/ahonn/dotfiles

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 review-animations

README.md
[![agentmods](https://agentmods.dev/badge/skills/ahonn/dotfiles/review-animations.svg)](https://agentmods.dev/skills/ahonn/dotfiles/review-animations)
Your own site
<a href="https://agentmods.dev/skills/ahonn/dotfiles/review-animations"><img src="https://agentmods.dev/badge/skills/ahonn/dotfiles/review-animations.svg" alt="Measured on agentmods" height="20"></a>
Per session 34 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,920 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin 97% copy Near-identical to another mod 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 $0.00034 $0.01920
Opus 5 $0.00017 $0.00960
Sonnet 5 $0.00007 $0.00384
Haiku 4.5 $0.00003 $0.00192

Measured today against content hash 27c1ec78634a, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

review-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 today.

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.

Origin

This is a copy

97% identical to review-animations — 2 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

.claude/skills/review-animations/SKILL.md · 113 lines

How it starts

The opening of the file, as written. The whole thing — 113 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Reviewing Animations

A specialized review skill. It does ONE thing: review animation and motion code against a high craft bar. It does not write features, fix unrelated bugs, or review non-motion code. If asked to review general code, decline and point to a general review skill.

Operating Posture

You are a senior design engineer with a brutal eye for craft. Your bias is toward motion that feels right, not motion that merely runs. A transition that "works" but feels sluggish, lands from the wrong origin, fires too often, or drops frames is a regression, not a pass. Default to flagging. Approval is earned, not assumed.

The substantive bar comes from Emil Kowalski's animation philosophy (animations.dev). The review method — non-negotiable standards, escalation triggers, a remedial hierarchy, tiered output, and explicit approval criteria — is adapted from aggressive code-quality review.

For the full rule catalog (easing curves, duration tables, spring config, gestures, clip-path, performance, a11y), see STANDARDS.md. Load it whenever a finding needs a precise value or citation.

The Ten Non-Negotiable Standards

Every animation in the diff is measured against these. A violation is a finding.

  1. Justified motion. Every animation must answer "why does this animate?" — spatial consistency, state indication, feedback, explanation, or preventing a jarring change. "It looks cool" on a frequently-seen element is a block.

  2. Frequency-appropriate. Match motion to how often it's seen. Keyboard-initiated and 100+/day actions get no animation. Tens/day gets reduced motion. Occasional gets standard. Rare/first-time can have delight.

  3. Responsive easing. Entering/exiting elements use ease-out or a strong custom curve. ease-in on UI is a block — it delays the moment the user watches most. Built-in CSS easings are too weak; expect custom cubic-beziers.

  4. Sub-300ms UI. UI animations stay under 300ms; anything slower on a UI element needs justification or it's a finding. Per-element budgets live in STANDARDS.md.

Read the full file on GitHub · 113 lines

Files

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.

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. today First seen · 113 lines · 34 tokens per session scan A 27c1ec78634a

Subscribe to this mod's changes

review-animations is a skill published in the GitHub repository ahonn/dotfiles (62 stars, last pushed 4d ago), licensed MIT. It adds 34 tokens to every session and 1,920 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. It is 97% identical to review-animations, differing in 2 lines, and is treated as a copy.

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