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Starfield — measured AI agent skill | DecimalAI

nexu-io/fx-starfield

NewSkillScoreMaintained

A slow drifting starfield — a calm cosmic backdrop. A bold, canvas-based effect from Open Design's html-ppt fx pack — for slides and launch videos. Guards prefers-reduced-motion (does not start). One per screen; on web use sparingly.

design-mediaby nexu-io

Links this skill to your agents and keeps it current with the author’s updates.

Automatic

Frontend / UI pack

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

pip install decimalai

2 · Get the skill — writes .claude/skills/nexu-io-fx-starfield/SKILL.md

decimalai skills pull nexu-io-fx-starfield --out .claude/skills/

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

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

Raw file: /s/nexu-io-fx-starfield/SKILL.md ↗ · machine-readable summary at /s/nexu-io-fx-starfield.json ↗

In productionGlobal

how this skill behaves on real traffic · last 30 days

No production data for this skill yet — usage numbers appear here once agents start running it.

Anonymized aggregate across every org using this skill — proof from real production use, not a demo.

Does this skill help? · Benchmark: with vs. withoutsign in to run this on your agents

23 test cases from the publisher’s eval.yaml · each run twice on gemini-3.6-flash — with the skill injected, then without · last run 2h ago

Yes — +57% lift-48% tokens0% turns91% of whole cases pass with skill (21/23)

Test case	Without → With	Effect	Δ tokens	Δ turns
case-05	✗→✓	▲ Improved	-67%	0%
case-04	✗→✓	▲ Improved	-55%	0%
case-02	✗→✓	▲ Improved	26%	0%
case-03	✗→✓	▲ Improved	-41%	0%
case-07	✗→✓	▲ Improved	-64%	0%

Showing 5 of 23 cases

SkillSafety

✓ 3 of 3 passed

Code scan15 of 15 checks clean

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

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/slides/fx-starfield/SKILL.md

View on GitHub ↗

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

Skill contents

SKILL.md

Starfield

A slow drifting starfield — a calm cosmic backdrop. From Open Design's html-ppt fx pack (Apache-2.0). Part of motion-anything; obeys MOTION-SPEC.md.

When to use it

Title cards, section breaks, or hero moments in slides / launch videos.

When NOT to use it (restraint)

Web body content or anything needing focused reading. Never more than one bold effect at once.

How to apply

Copy starfield.js and _util.js and link them.
Add data-fx="starfield" to a positioned container; call HPX['starfield'](el) (guard prefers-reduced-motion).

Accessibility & performance

Guard with prefers-reduced-motion (don't start). Canvas-based; isolated compositing layer.

Want to see if nexu-io/fx-starfield would activate on your phrasing? Try it before you install — no LLM call, no signup.

Other measured skills in the registry, with their headline benchmark lift.