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 nexu-io/motion-anything --skill anim-fadeoutdownbiggit clone --depth 1 https://github.com/nexu-io/motion-anythingWrote 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/nexu-io/motion-anything/anim-fadeoutdownbig)<a href="https://agentmods.dev/skills/nexu-io/motion-anything/anim-fadeoutdownbig"><img src="https://agentmods.dev/badge/skills/nexu-io/motion-anything/anim-fadeoutdownbig/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/nexu-io/motion-anything/anim-fadeoutdownbig"><img src="https://agentmods.dev/badge/skills/nexu-io/motion-anything/anim-fadeoutdownbig.svg" alt="Reviewed on agentmods" width="80" 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 | $0.00052 | $0.00350 |
| Opus 5 | $0.00026 | $0.00175 |
| Sonnet 5 | $0.00010 | $0.00070 |
| Haiku 4.5 | $0.00005 | $0.00035 |
Grade A, and why
anim-fadeoutdownbig 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 11d 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.
This is a copy
80% identical to anim-backindown — 18 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.
What it actually says
Animate · Fade Out Down Big
Fade Out Down Big — CSS keyframe animation from Animate.css (Hippocratic License 2.1, © Daniel Eden). Part of motion-anything.
When to use it
- A quick, drop-in CSS exit animation (no JS).
When NOT to use it (restraint)
- Many at once / must-read content. Keep it restrained.
How to apply
- Copy
fadeOutDownBig.css. 2. Add classfadeOutDownBigto the element + setanimation-duration.
Accessibility & license
prefers-reduced-motion: disabled. Attribute Animate.css (Hippocratic-2.1).
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.
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.
- 11d ago First seen · 41 lines · 52 tokens per session scan A e783e9a54fe0
anim-fadeoutdownbig is a skill published in the GitHub repository nexu-io/motion-anything (773 stars, last pushed 2mo ago), licensed Apache-2.0. It adds 52 tokens to every session and 350 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. It is 80% identical to anim-backindown, differing in 18 lines, and is treated as a copy.
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