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 SummerEngine/summer-engine-agent --skill animated-loopgit clone --depth 1 https://github.com/SummerEngine/summer-engine-agentWrote 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/summerengine/summer-engine-agent/animated-loop)<a href="https://agentmods.dev/skills/summerengine/summer-engine-agent/animated-loop"><img src="https://agentmods.dev/badge/skills/summerengine/summer-engine-agent/animated-loop/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/summerengine/summer-engine-agent/animated-loop"><img src="https://agentmods.dev/badge/skills/summerengine/summer-engine-agent/animated-loop.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00090 | $0.04149 |
| Opus 5 | $0.00045 | $0.02074 |
| Sonnet 5 | $0.00018 | $0.00830 |
| Haiku 4.5 | $0.00009 | $0.00415 |
Grade A, and why
animated-loop 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 5d 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 — 225 lines — stays where its author put it; the contents beside it link to each section on GitHub.
animated-loop — 5 Second Seamless Background Loop
A loop is the only video format that has to not have a beginning or end. The viewer sees it on the title screen for 30 seconds; if the seam between loop iterations is visible, the whole thing reads as broken. This skill exists to force the constraints that make seams invisible: take the shortest duration available, keep the motion ambient (no narrative, no big camera moves), use the cheap fast model (ltx), and prompt for a composition where the first and last frames are functionally identical.
Duration is not a dial here. summer_generate_video accepts only duration=5 or duration=10; the server coerces every other value to 5. So "drop to 3s to hide the seam" is not an option — 5s is the floor, and the seam has to be won in the prompt and the reference frame instead.
If the user wants a 5s punchy marketing shot, that's video/trailer-shot. If they want a 10s narrative cutscene, that's video/cinematic-cutscene. This skill is the one for video that has to disappear — atmosphere behind a logo, mood behind a menu, ambience behind a splash card.
When to use
- "Looping background for the title screen."
- "Animated backdrop behind the logo on the splash."
- "Menu background — torchlit dungeon, just flicker and motes."
- "Looping ambient video for the pause screen."
- "Splash loop — fog over a forest."
- "Need a video that loops behind the level select."
When NOT to use
- Marketing shot for a trailer (5-10s with punch) —
video/trailer-shot. - Narrative cutscene with a beginning and end —
video/cinematic-cutscene. - Static splash image — generate with
2d-assets/concept-artand use aTextureRect. A still is cheaper, lighter, and never seams. - UI element animation (icons, button states) — those are GDScript
Tweenor sprite sheets, not video. - A 10-second shot you want to "loop". That seam will be visible. Either accept a hard cut every 10s (ugly) or generate a 5s clip designed to loop.
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.
- 5d ago First seen · 225 lines · 90 tokens per session scan A 197b9e48115b
animated-loop is a skill published in the GitHub repository SummerEngine/summer-engine-agent (57 stars, last pushed 4d ago), licensed MIT. It adds 90 tokens to every session and 4,149 once invoked, about $0.0005 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 2026-09-03.
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