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fade-in-up · nexu-io | DecimalAI

frontendby nexu-io

fade-in-up

nexu-io/fade-in-up

Source nexu-io/motion-anything ↗License Apache-2.0

Rise + fade key elements in as the page loads, optionally staggered.

SkillScore91Maintained

Automatic

Frontend / UI pack

Last verified 8/18/2026

What it changes

Passed 20 of 22 test cases with the skill, and 10 of 22 without it.

Without skill45%

With skill91%

Checks it passed that the model alone missed

States that fade-in-up.js must be linked.
States that fade-in-up.css must be linked.
Specifies data-fade-delay for custom stagger timing.

and 9 more in the full report

10 fixed10 passed either way2 still failing0 broke

Pass-rate lift: +45 pp
Tokens: -38%
Agent turns: 0%
Response time: -48%

Model gemini-3.6-flashMeasured 8/18/2026v120 of 22 cases passed with skill

Tokens, turns and time describe resource use, not a dollar price.

Use this skill

Save it into your project's skills folder. Claude Code picks it up in its next session.

curl -fsSL --create-dirs -o .claude/skills/nexu-io-fade-in-up/SKILL.md https://app.decimal.ai/s/nexu-io-fade-in-up/SKILL.md

Want it pinned and updatable? pip install "decimalai>=0.15", then decimalai skills add nexu-io-fade-in-up, and start Claude Code with claude --plugin-dir "$(git rev-parse --show-toplevel)/.agents"

1 · One-time — install the CLI (docs ↗)

pip install "decimalai>=0.15"

2 · Get the skill — writes .agents/skills/nexu-io-fade-in-up/ and pins it in .decimal/skills.lock

decimalai skills add nexu-io-fade-in-up

No CLI? Get the same file — curl · raw file

curl -fsSL --create-dirs -o .claude/skills/nexu-io-fade-in-up/SKILL.md https://app.decimal.ai/s/nexu-io-fade-in-up/SKILL.md

Raw file: /s/nexu-io-fade-in-up/SKILL.md ↗ · machine-readable summary at /s/nexu-io-fade-in-up.json ↗

Safety checks: 3 of 3 passed

Code scan CleanIntent PassedContent Clean

See it in action

One of 10 test cases the skill fixed. Same model, same prompt, with and without the skill.

1 of 10

Prompt

When setting up the fade-in-up motion script on a static HTML page, which CSS file must be included and linked in the head?

What was checked, without and with the skill
Checked	Without skill	With skill
States that fade-in-up.css must be linked.	Missed	Passed

case-12 · gemini-3.6-flash · 8/18/2026 · answers are capped and redacted

What's inside

The instructions your model reads when the skill loads.

SKILL.md18 linessingle file

fade-in-up

A clean rise + fade entrance, on load. Part of motion-anything; obeys MOTION-SPEC.md.

When to use it

Hero content and a few key elements appearing on first paint.

When NOT to use it (restraint)

Long lists / off-screen content — use scroll-reveal.
Don't delay must-read content by more than ~300ms; keep to ≤3 staggered elements.

How to apply

Copy fade-in-up.css and fade-in-up.js and link them.
Mark elements: <h1 data-fade>…</h1> (optional data-fade-delay="80"; auto-staggers otherwise).

Accessibility & performance

prefers-reduced-motion: shown immediately. Transform/opacity only.

Track record

Benchmark

20 / 22

test cases passed, vs 10 / 22 without

Adoption

Users: 0
Times used: 0

Safety and source details

SkillSafety

✓ 3 of 3 passed

Code scan15 of 15 checks clean

0 critical · 0 warning · 0 info — scanner v4 — 8/3/2026

View 15 scanner checks

live_secretremote_code_executionreverse_shelldata_exfiltrationssrf_metadataagent_snoopinganti_refusaldestructive_commandsobfuscated_unicodeunicode_homoglyphopaque_blobsuspicious_urltool_overreachtrigger_abuseprompt_injection_phrasing

IntentSafe

LLM judge · does the skill do what it claims

ContentClean

LLM judge · policy & harmful-content review

Source

Imported

nexu-io / motion-anything

recipes/web/fade-in-up/SKILL.md

View on GitHub ↗

License Apache-2.0Imported 8/3/2026Version v1

More skills from the same source and nearby in the registry, with their headline benchmark lift.

Ready to supercharge your AI agents?

See it in action

What's inside

fade-in-up

When to use it

When NOT to use it (restraint)

How to apply

Accessibility & performance

Track record

Benchmark

Adoption

SkillSafety

Source

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