MCPInstall

animejs

by heygen-comFrontend & Design

Anime.js adapter patterns for HyperFrames. Use when writing Anime.js animations or timelines inside HyperFrames compositions, registering animations on window.hfAnime, making Anime.js seek-driven and deterministic, or translating Anime.js examples into render-safe HyperFrames HTML.

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Install

Works with every agent the skills CLI supports.

npx skills add https://github.com/heygen-com/hyperframes --skill animejs
  1. 01

    Install

    Run the command in your project. The CLI asks which agents to install for.

  2. 02

    Describe the task

    Ask your agent for something this skill covers. It loads animejs automatically when relevant.

  3. 03

    Review the result

    The agent follows the SKILL.md steps, scripts and references bundled with the skill.

Security audits

Independent scans of the skill's instructions and bundled files.

Gen Agent Trust Hub PassSAFE ·The skill provides standard implementation patterns for integrating the Anime.js animation library with the HyperFrames framework. It uses official CDNs for library loading and standard validation tools for development workflows.
Socket PassNo alerts
Snyk WarnMEDIUM ·Risk: MEDIUM · 1 issue

SKILL.md

The instructions your agent reads when the skill is triggered.

Anime.js for HyperFrames

HyperFrames can seek Anime.js instances through its animejs runtime adapter. The composition owns the animation objects; HyperFrames owns the clock.

Contract

  • Create animations or timelines synchronously during composition initialization.
  • Set autoplay: false so Anime.js does not advance on its own clock.
  • Register every returned animation or timeline on window.__hfAnime.
  • Use finite durations and loop counts.
  • Avoid callbacks that mutate DOM based on wall-clock time, network state, or unseeded randomness.

The adapter seeks every registered instance with instance.seek(timeMs), where timeMs is HyperFrames time in milliseconds.

Basic Pattern

<script src="https://cdn.jsdelivr.net/npm/animejs@4.0.2/lib/anime.iife.min.js"></script>
<script>
  const anim = anime({
    targets: ".mark",
    translateX: 280,
    rotate: "1turn",
    opacity: [0, 1],
    duration: 1200,
    easing: "easeOutExpo",
    autoplay: false,
  });

  window.__hfAnime = window.__hfAnime || [];
  window.__hfAnime.push(anim);
</script>

Timeline Pattern

<script>
  const tl = anime.timeline({
    autoplay: false,
    easing: "easeOutCubic",
  });

  tl.add({
    targets: ".title",
    translateY: [40, 0],
    opacity: [0, 1],
    duration: 650,
  }).add(
    {
      targets: ".accent",
      scaleX: [0, 1],
      duration: 450,
    },
    250,
  );

  window.__hfAnime = window.__hfAnime || [];
  window.__hfAnime.push(tl);
</script>

Module Builds

If you use an ES module build, the adapter does not care how the instance was created. It only needs the returned object to expose seek(), pause(), and preferably play():

<script type="module">
  import { animate } from "https://cdn.jsdelivr.net/npm/animejs/+esm";

  const anim = animate(".chip", {
    x: "18rem",
    duration: 900,
    autoplay: false,
  });

  window.__hfAnime = window.__hfAnime || [];
  window.__hfAnime.push(anim);
</script>

Good Uses

  • Small SVG and DOM flourishes where Anime.js syntax is compact.
  • Imported Anime.js examples that can be made seek-driven.
  • Multiple independent micro-animations pushed into the same registry.

Use GSAP for complex scene sequencing unless the user specifically asks for Anime.js. GSAP is still the primary HyperFrames authoring path.

Avoid

  • Leaving autoplay at the Anime.js default.
  • Depending on anime.running auto-discovery instead of explicit window.__hfAnime.push(...).
  • Infinite loops. Compute a finite repeat count from the composition duration.
  • Building animations in timers, promises, event handlers, or after async asset loads.

Validation

After editing a composition that uses Anime.js:

npx hyperframes lint
npx hyperframes validate

Credits And References

FAQ

What does the animejs skill do?

Anime.js adapter patterns for HyperFrames. Use when writing Anime.js animations or timelines inside HyperFrames compositions, registering animations on window.hfAnime, making Anime.js seek-driven and deterministic, or translating Anime.js examples into render-safe HyperFrames HTML.

How do I install animejs?

Run npx skills add https://github.com/heygen-com/hyperframes --skill animejs in your project. The skills CLI detects the agents you use and copies the skill into the right folder. For Claude Code you can also place the skill folder at ~/.claude/skills/animejs/ (personal) or .claude/skills/animejs/ (project).

Which AI agents can use animejs?

Any agent that supports the open Agent Skills format (a folder with a SKILL.md file), including Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI, Windsurf, Cline, OpenCode and more.

Is animejs safe to install?

Security partners have reviewed it: Gen Agent Trust Hub passed; Socket passed; Snyk flagged items to review. As with any skill, read the SKILL.md and bundled scripts before installing.

Who maintains animejs?

It is published by heygen-com in heygen-com/hyperframes. It has 70,010 recorded installs.

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