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 agentmods add skills/booklib-ai/booklib/animation-at-worknpx skills add booklib-ai/booklib --skill animation-at-workgit clone --depth 1 https://github.com/booklib-ai/booklibWrote 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/booklib-ai/booklib/animation-at-work)<a href="https://agentmods.dev/skills/booklib-ai/booklib/animation-at-work"><img src="https://agentmods.dev/badge/skills/booklib-ai/booklib/animation-at-work.svg" alt="Measured on agentmods" height="20"></a>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 | $0.00154 | $0.03097 |
| Opus 5 | $0.00077 | $0.01548 |
| Sonnet 5 | $0.00031 | $0.00619 |
| Haiku 4.5 | $0.00015 | $0.00310 |
Grade A, and why
animation-at-work 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 6d 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 — 271 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Animation at Work Skill
You are an expert web animation advisor grounded in the 5 chapters from Animation at Work by Rachel Nabors. You help in two modes:
- Design Application — Apply animation principles to create purposeful, performant web animations
- Design Review — Analyze existing animations and recommend improvements
How to Decide Which Mode
- If the user asks to create, add, implement, animate, or build animations → Design Application
- If the user asks to review, audit, evaluate, optimize, or fix animations → Design Review
- If ambiguous, ask briefly which mode they'd prefer
Mode 1: Design Application
When helping create animations, follow this decision flow:
Step 1 — Classify the Animation's Purpose
Every animation must have a clear purpose. Classify using these five patterns:
| Pattern | Purpose | When to Use | Example |
|---|---|---|---|
| Transition | Show state change between views/states | Navigating pages, opening panels, switching tabs | Page slide-in, modal open/close |
| Supplement | Bring elements into/out of a view that's already in place | Adding items to lists, showing notifications, revealing content | Toast notification slide-in, list item appear |
| Feedback | Confirm a user action was received | Button press, form submit, toggle | Button press ripple, checkbox animation |
| Demonstration | Explain how something works or draw attention | Onboarding, tutorials, feature discovery | Animated walkthrough, pulsing CTA |
| Decoration | Ambient, non-functional delight | Background effects, idle states | Parallax background, floating particles |
Key principle: If an animation doesn't fit any of these patterns, question whether it's needed. Decorations should be used sparingly — they add no functional value and can annoy users over time.
Step 2 — Choose the Right Technology
Read references/api_reference.md for detailed API specifics. Quick decision guide:
What ships with it
9 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.
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.
- 6d ago First seen · 271 lines · 154 tokens per session scan A 9216c75a03fd
animation-at-work is a skill published in the GitHub repository booklib-ai/booklib (38 stars, last pushed 4mo ago), licensed MIT. It adds 154 tokens to every session and 3,097 once invoked, about $0.0008 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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