Agent skill

Create Composition

Workflow for creating a new Helios composition. An agent skill from BintzGavin/helios.

Apache-2.0Auto-check passedFrontend & Design

Install Create Composition

skills CLI

$ npx skills add BintzGavin/helios --skill create-composition -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI

$ gh skill install BintzGavin/helios create-composition --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy

$ git clone --depth 1 https://github.com/BintzGavin/helios.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.agents/skills/helios-skills/skills/workflows/create-composition .claude/skills/create-composition && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Paste into Claude Code

Install the "create-composition" agent skill from https://github.com/BintzGavin/helios/tree/main/.agents/skills/helios-skills/skills/workflows/create-composition into .claude/skills/create-composition/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "create-composition", then confirm the skill loads.

Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

$skill-installer

$skill-installer install https://github.com/BintzGavin/helios/tree/main/.agents/skills/helios-skills/skills/workflows/create-composition

Type this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.

skills CLI

$ npx skills add BintzGavin/helios --skill create-composition -a codex

Project install goes to .agents/skills/; add -g for ~/.codex/skills/.

GitHub CLI

$ gh skill install BintzGavin/helios create-composition --agent codex

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/BintzGavin/helios.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.agents/skills/helios-skills/skills/workflows/create-composition .agents/skills/create-composition && rm -rf skills-src

Use ~/.agents/skills/ instead of .agents/skills for a personal install.

Codex skills documentation · loads skills from .agents/skills/

Paste into Codex

Install the "create-composition" agent skill from https://github.com/BintzGavin/helios/tree/main/.agents/skills/helios-skills/skills/workflows/create-composition into .agents/skills/create-composition/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "create-composition", then confirm the skill loads.

Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add BintzGavin/helios --skill create-composition -a cursor

Project install goes to .agents/skills/; add -g for ~/.cursor/skills/.

GitHub CLI

$ gh skill install BintzGavin/helios create-composition --agent cursor

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/BintzGavin/helios.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.agents/skills/helios-skills/skills/workflows/create-composition .cursor/skills/create-composition && rm -rf skills-src

Use ~/.cursor/skills/ instead of .cursor/skills for a personal install.

Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/

Paste into Cursor

Install the "create-composition" agent skill from https://github.com/BintzGavin/helios/tree/main/.agents/skills/helios-skills/skills/workflows/create-composition into .cursor/skills/create-composition/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "create-composition", then confirm the skill loads.

Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

gemini skills install

$ gemini skills install https://github.com/BintzGavin/helios.git --path .agents/skills/helios-skills/skills/workflows/create-composition

--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.

skills CLI

$ npx skills add BintzGavin/helios --skill create-composition -a gemini-cli

Project install goes to .agents/skills/; add -g for ~/.gemini/skills/.

GitHub CLI

$ gh skill install BintzGavin/helios create-composition --agent gemini-cli

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/BintzGavin/helios.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.agents/skills/helios-skills/skills/workflows/create-composition .gemini/skills/create-composition && rm -rf skills-src

Use ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.

Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/

Paste into Gemini CLI

Install the "create-composition" agent skill from https://github.com/BintzGavin/helios/tree/main/.agents/skills/helios-skills/skills/workflows/create-composition into .gemini/skills/create-composition/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "create-composition", then confirm the skill loads.

Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

GitHub CLI

$ gh skill install BintzGavin/helios create-composition

Installs for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).

skills CLI

$ npx skills add BintzGavin/helios --skill create-composition -a github-copilot

Project install goes to .agents/skills/; add -g for ~/.copilot/skills/.

Manual copy

$ git clone --depth 1 https://github.com/BintzGavin/helios.git skills-src && mkdir -p .github/skills && cp -r skills-src/.agents/skills/helios-skills/skills/workflows/create-composition .github/skills/create-composition && rm -rf skills-src

Use ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.

GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/

Paste into GitHub Copilot

Install the "create-composition" agent skill from https://github.com/BintzGavin/helios/tree/main/.agents/skills/helios-skills/skills/workflows/create-composition into .github/skills/create-composition/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "create-composition", then confirm the skill loads.

GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add BintzGavin/helios --skill create-composition -a opencode

OpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.

GitHub CLI

$ gh skill install BintzGavin/helios create-composition --agent opencode

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/BintzGavin/helios.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.agents/skills/helios-skills/skills/workflows/create-composition .opencode/skills/create-composition && rm -rf skills-src

Use ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.

OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/

Paste into OpenCode

Install the "create-composition" agent skill from https://github.com/BintzGavin/helios/tree/main/.agents/skills/helios-skills/skills/workflows/create-composition into .opencode/skills/create-composition/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "create-composition", then confirm the skill loads.

OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

Facts

Skill name: create-composition
GitHub stars: 118
Token cost: ~865 tokens
SKILL.md length: 157 words
Files: 1
Skills in repo: 16
Repo updated: Oct 7, 2026
First seen: Oct 7, 2026
Licence: Apache-2.0

At a glance

Workflow for creating a new Helios composition. An agent skill from BintzGavin/helios.

Works in 2 steps: Basic Structure → Initialize Helios
Building a new animation project
SKILL.md covers 1. Basic Structure, 2. Initialize Helios, Checklist and Auto-Sync Animations, plus 1 more section
Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Create Composition is an agent skill from BintzGavin/helios. Workflow for creating a new Helios composition. Use when building a new animation project or converting an existing animation to run in Helios.

Its SKILL.md is about 870 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Frontend & Design, covering Web animation and motion. The repository describes itself as: Programmatic video creation with web technologies you already know. CSS animations just work. The licence is Apache-2.0.

When your agent uses it

Building a new animation project
Converting an existing animation to run in Helios

Example prompts

“/create-composition”

Workflow steps

2 steps, taken from the step headings in SKILL.md.

Basic Structure
Initialize Helios

What it can do on your machine

Read from SKILL.md and the folder at commit 0fb7335. It shows what the files ask for, not the result of running them.

Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md (its code samples are html and typescript).
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Create Composition loads about 865 tokens when it runs. Until then it costs about 41 tokens; SKILL.md has 157 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it: ~41
When it runs · the whole SKILL.md, loaded when a task matches: ~865

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from BintzGavin/helios at commit 0fb7335, republished under its Apache-2.0 licence (© BintzGavin). 157 words, ~865 tokens.

Download SKILL.mdSave it as .claude/skills/create-composition/SKILL.md (or your agent's skills folder).

name: create-composition
description: Workflow for creating a new Helios composition. Use when building a new animation project or converting an existing animation to run in Helios.

Create Composition Workflow

A Helios composition is a web page (HTML/JS) that uses the @helios-project/core library to drive animations. This page can be viewed in the Browser, embedded in the Player, or rendered to video by the Renderer.

1. Basic Structure

Create a composition.html file. This is the entry point.

html

<!DOCTYPE html>
<html>
<head>
    <title>My Composition</title>
    <style>
        body { margin: 0; overflow: hidden; background: black; }
        canvas { display: block; width: 100vw; height: 100vh; }
    </style>
</head>
<body>
    <canvas id="canvas"></canvas>
    <script type="module" src="./src/main.ts"></script>
</body>
</html>

2. Initialize Helios

In your script (main.ts or inline), initialize Helios and set up the render loop.

typescript

import { Helios } from '@helios-project/core';

// 1. Config
const width = 1920;
const height = 1080;
const fps = 30;
const duration = 10; // seconds

// 2. Define Input Schema (Optional but recommended)
const schema = {
  type: 'object',
  properties: {
    title: { type: 'string', default: "Hello World" },
    color: { type: 'string', default: "#ff0000" }
  }
};

// 3. Setup Canvas
const canvas = document.getElementById('canvas') as HTMLCanvasElement;
canvas.width = width;
canvas.height = height;
const ctx = canvas.getContext('2d');

// 4. Initialize Engine
const helios = new Helios({
    duration,
    fps,
    width,
    height,
    schema, // Pass schema
    inputProps: { title: "Hello World", color: "#ff0000" }, // Initial props
    autoSyncAnimations: true // Optional: Sync CSS/WAAPI
});

// 5. Bind to Document Timeline (CRITICAL for Renderer/Player)
helios.bindToDocumentTimeline();

// 6. Expose to Window (CRITICAL for detection)
// @ts-ignore
window.helios = helios;

// 7. Define Render Function
function draw(frame: number, props: any) {
    // Clear
    ctx.fillStyle = 'black';
    ctx.fillRect(0, 0, width, height);

    // Calculate time/progress
    const time = frame / fps;
    const progress = time / duration;

    // Draw something using props
    const x = progress * width;

    ctx.fillStyle = props.color;
    ctx.font = '100px sans-serif';
    ctx.fillText(props.title, x, height/2);
}

// 8. Subscribe to State Changes
helios.subscribe((state) => {
    draw(state.currentFrame, state.inputProps);
});

// 9. Initial Draw
const state = helios.getState();
draw(state.currentFrame, state.inputProps);

Checklist

Instance Created: new Helios(...) called with duration/fps/props.
Timeline Bound: helios.bindToDocumentTimeline() called.
Window Exposed: window.helios = helios set.
State Subscribed: helios.subscribe(...) used to trigger renders.
Canvas/DOM Ready: Elements are sized correctly (usually 100vw/100vh or fixed resolution).

Auto-Sync Animations

If you are using CSS animations or Web Animations API (WAAPI), set autoSyncAnimations: true in the constructor. Helios will automatically hijack the document timeline and sync these animations to the current frame when scrubbing.

Frameworks

For React, Vue, or Svelte, wrap this logic in a component or hook. See examples/react/SKILL.md, examples/vue/SKILL.md, or examples/svelte/SKILL.md.

Files

Just SKILL.md in .agents/skills/helios-skills/skills/workflows/create-composition of BintzGavin/helios.

Open the folder on GitHubat commit 0fb7335

Compare with similar skills

Create Composition next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Create Composition compared with similar skills
Skill	Stars	Used in	Tokens	Auto-check	Licence	Repo updated
Create Composition this skillBintzGavin/helios	118	—	~865	Automated safety check: Pass	Apache-2.0	today
Impeccablebestofjs/bestofjs	3.1k	27 repos	~2.6k	Automated safety check: Pass	MIT	3 days ago
GSAP ScrollTriggergreensock/gsap-skills	16k	5 repos	~4.6k	Automated safety check: Pass	MIT	2 mo ago
GSAP Core Animationgreensock/gsap-skills	16k	4 repos	~3.7k	Automated safety check: Pass	MIT	2 mo ago
Web Animation DesignbaptisteArno/typebot.io	11k	2 repos	~2.7k	Automated safety check: Pass	Custom licence	yesterday
Scroll World Landing Pageoso95/scroll-world	9.8k	1 repos	~12k	Automated safety check: Notes	MIT	2 mo ago

Similar skills

Impeccable
bestofjs/bestofjs
A skill your agent uses when the user wants to design, redesign, shape, critique, audit, polish, clarify, distill, harden, optimize, adapt, animate, colorize, extract, or otherwise improve a…
3.1k GitHub starsUsed in 27 repos~2.6k tokens
Frontend & DesignAuto-check passed
GSAP ScrollTrigger
greensock/gsap-skills
Teaches an agent how to wire up GSAP's ScrollTrigger plugin for scroll-linked animation, pinned sections and scrub, including the start and end position syntax.
16k GitHub starsUsed in 5 repos~4.6k tokens
Frontend & DesignAuto-check passed
GSAP Core Animation
greensock/gsap-skills
Covers the GSAP core API for tweens, easing, staggers, defaults and matchMedia, and when to choose GSAP over CSS animations or other JavaScript animation libraries.
16k GitHub starsUsed in 4 repos~3.7k tokens
Frontend & DesignAuto-check passed
Web Animation Design
baptisteArno/typebot.io
Guides easing, timing and animation choices for UI motion, based on a web animation course, and reviews existing animations in a before-and-after table.
11k GitHub starsUsed in 2 repos~2.7k tokens
Frontend & DesignAuto-check passed
Scroll World Landing Page
oso95/scroll-world
Builds a scroll-driven landing page where a pre-rendered camera flies through connected AI-generated scenes, using Higgsfield for stills and video clips.
9.8k GitHub starsUsed in 1 repo~12k tokens
Frontend & DesignAuto-check: notes
Make Interfaces Feel Better
samuelclay/NewsBlur
Design engineering principles for making interfaces feel polished.
7.6k GitHub starsUsed in 10 repos~1.5k tokens
Frontend & DesignAuto-check passed

Questions about Create Composition

What does Create Composition do?

Workflow for creating a new Helios composition. An agent skill from BintzGavin/helios. Create Composition is an agent skill from BintzGavin/helios. Workflow for creating a new Helios composition.

When should I use Create Composition?

Create Composition fits situations like: building a new animation project; converting an existing animation to run in Helios.

How do I install Create Composition in Claude Code?

Run `npx skills add BintzGavin/helios --skill create-composition -a claude-code`. Or copy the skill folder (.agents/skills/helios-skills/skills/workflows/create-composition in BintzGavin/helios) into .claude/skills/create-composition in your project. Claude Code loads it when a task matches its description.

How do I install Create Composition in Codex?

Run `npx skills add BintzGavin/helios --skill create-composition -a codex`. Or copy the skill folder (.agents/skills/helios-skills/skills/workflows/create-composition in BintzGavin/helios) into .agents/skills/create-composition in your project. Codex loads it when a task matches its description.

Can I use Create Composition in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add BintzGavin/helios --skill create-composition -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/create-composition, .gemini/skills/create-composition, .github/skills/create-composition and .opencode/skills/create-composition in your project.

What does Create Composition need to run?

SKILL.md names no scripts, command-line tools or credentials: Create Composition is instructions for the agent only.

Does Create Composition access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Create Composition safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Create Composition use?

Create Composition is published under the Apache-2.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Create Composition use?

About 865 tokens (SKILL.md is roughly 3.5k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Create Composition?

Skills that share tags, products or a category with Create Composition: Impeccable (bestofjs/bestofjs, 3.1k stars), GSAP ScrollTrigger (greensock/gsap-skills, 16k stars), GSAP Core Animation (greensock/gsap-skills, 16k stars) and Web Animation Design (baptisteArno/typebot.io, 11k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Create Composition?

BintzGavin (a GitHub user) maintains it in BintzGavin/helios, which has 118 GitHub stars. The repository holds 16 skills in this directory. The repository was last updated on October 7, 2026.

Source: BintzGavin/helios on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.

Create Composition

Install Create Composition

Facts

At a glance

What it does

When your agent uses it

Example prompts

Workflow steps

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

Create Composition Workflow

1. Basic Structure

2. Initialize Helios

Checklist

Auto-Sync Animations

Frameworks

Files

Compare with similar skills

Similar skills

Impeccable

GSAP ScrollTrigger

GSAP Core Animation

Web Animation Design

Scroll World Landing Page

Make Interfaces Feel Better

More from BintzGavin/helios

Make Video

Helios Core

Helios Getting Started

Helios Player

Helios Renderer

Helios Skills

Questions about Create Composition

Install Create Composition

Facts

At a glance

What it does

When your agent uses it

Example prompts

Workflow steps

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

Create Composition Workflow

1. Basic Structure

2. Initialize Helios

Checklist

Auto-Sync Animations

Frameworks

Files

Compare with similar skills

Similar skills

More from BintzGavin/helios

Related

Questions about Create Composition