vskill: Skill for Claude Code

.claude/skills/lottie/SKILL.md

lottie is a skill for Claude Code from anton-abyzov/vskill. It costs 59 tokens per session (843 once invoked), scanned A, a copy of lottie, MIT.

An adapter for placing Lottie animations into HyperFrames videos. Lottie is a format for animations exported from tools such as After Effects, and dotLottie is a packaged version of that format.

In plain words
What is it for?
Use it to embed local Lottie or dotLottie files, control playback deterministically, and register animation players so HyperFrames can synchronize them with video timing.
Why use it?
It keeps these animations controllable by the HyperFrames timeline, including when the video renderer seeks to an exact time.

Skill for Claude Code

Written for Claude Code: installed under .claude/.

This is anton-abyzov/vskill's own configuration. It tells Claude Code how to work on vskill itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything vskill configures →

Reuse

Borrowing it

Nothing to install: this file belongs to anton-abyzov/vskill. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/anton-abyzov/vskill/main/.claude/skills/lottie/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/anton-abyzov/vskill

Made for: Claude Code.

Wrote 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.

agentmods badge for lottie

README.md
[![agentmods](https://agentmods.dev/badge/skills/anton-abyzov/vskill/lottie/github.svg)](https://agentmods.dev/skills/anton-abyzov/vskill/lottie)
Your own site
<a href="https://agentmods.dev/skills/anton-abyzov/vskill/lottie"><img src="https://agentmods.dev/badge/skills/anton-abyzov/vskill/lottie/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.

agentmods 80×15 button for lottie

Your own site · 80×15
<a href="https://agentmods.dev/skills/anton-abyzov/vskill/lottie"><img src="https://agentmods.dev/badge/skills/anton-abyzov/vskill/lottie.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 59 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 843 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin 98% copy Near-identical to another mod in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00059 $0.00843
Opus 5 $0.00030 $0.00421
Sonnet 5 $0.00012 $0.00169
Haiku 4.5 $0.00006 $0.00084

Measured 9d ago against content hash 3954ae0a9807, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

lottie 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 9d 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.

Origin

This is a copy

98% identical to lottie — 1 line 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.

.claude/skills/lottie/SKILL.md · 114 lines

How it starts

The opening of the file, as written. The whole thing — 114 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Lottie for HyperFrames

HyperFrames can seek both lottie-web and dotLottie players through its lottie runtime adapter. Lottie is a strong fit because the animation timeline is already encoded in the asset; HyperFrames only needs a player object it can seek.

Contract

  • Load assets from local project files, usually under assets/.
  • Set autoplay: false.
  • Prefer loop: false unless the user explicitly wants a loop.
  • Register every returned animation or player on window.__hfLottie.
  • Keep the Lottie container dimensions stable with CSS.

The adapter seeks lottie-web with goToAndStop(timeMs, false) and dotLottie with frame or percentage APIs depending on player shape.

lottie-web Pattern

<div id="logo-lottie" class="lottie-layer"></div>
<script src="https://cdnjs.cloudflare.com/ajax/libs/bodymovin/5.12.2/lottie.min.js"></script>
<script>
  const anim = lottie.loadAnimation({
    container: document.getElementById("logo-lottie"),
    renderer: "svg",
    loop: false,
    autoplay: false,
    path: "assets/logo-reveal.json",
  });

  window.__hfLottie = window.__hfLottie || [];
  window.__hfLottie.push(anim);
</script>
.lottie-layer {
  width: 100%;
  height: 100%;
}

dotLottie Pattern

<canvas id="product-lottie" class="lottie-canvas"></canvas>
<script src="https://unpkg.com/@lottiefiles/dotlottie-web"></script>
<script>
  const player = new DotLottie({
    canvas: document.getElementById("product-lottie"),
    src: "assets/product-flow.lottie",
    autoplay: false,
    loop: false,
  });

  window.__hfLottie = window.__hfLottie || [];
  window.__hfLottie.push(player);
</script>
.lottie-canvas {
  width: 100%;
  height: 100%;
  display: block;
}

Multiple Animations

Push each player into the same registry:

window.__hfLottie = window.__hfLottie || [];
window.__hfLottie.push(backgroundAnim);
window.__hfLottie.push(iconAnim);
window.__hfLottie.push(confettiAnim);

HyperFrames seeks them all to the same composition time.

Read the full file on GitHub · 114 lines

Changes

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.

  1. 9d ago First seen · 114 lines · 59 tokens per session scan A 3954ae0a9807

Subscribe to this mod's changes

lottie is a skill published in the GitHub repository anton-abyzov/vskill (45 stars, last pushed 2d ago), licensed MIT. It adds 59 tokens to every session and 843 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. It is 98% identical to lottie, differing in 1 line, and is treated as a copy.

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