New: 98,000+ skills indexed from GitHub repos with 100+ stars · every skill safety-checkedBrowse top skillsTop skills
Esc to closeBrowse all skills
Submit a skillBrowse skills
Submit a skillBrowse skills

Agent skill

Helios Studio

by BintzGavin in BintzGavin/helios

Studio tool for developing and previewing Helios compositions.

Apache-2.0Auto-check passedMedia & Creative

Install Helios Studio

skills CLI
$ npx skills add BintzGavin/helios --skill helios-studio -a claude-code

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

GitHub CLI
$ gh skill install BintzGavin/helios helios-studio --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/skills/studio .claude/skills/helios-studio && 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/

Facts

Skill name
helios-studio
GitHub stars
118
Token cost
~866 tokens
SKILL.md length
405 words
Files
1
Skills in repo
16
Repo updated
First seen
Licence
Apache-2.0

At a glance

Studio tool for developing and previewing Helios compositions.

  • You want to launch the interactive development environment
  • SKILL.md covers Quick Start, Features, Environment Variables and Common Issues, plus 1 more section
  • Calls npx

What it does

Helios Studio is an agent skill from BintzGavin/helios. Studio tool for developing and previewing Helios compositions. Use when you want to launch the interactive development environment or manage assets.

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 Media & Creative. It works with Model Context Protocol. 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

  • You want to launch the interactive development environment

Example prompts

  • “/helios-studio”

Requirements

  • Node.js

What it can do on your machine

Read from SKILL.md and the folder at commit c6b0c13. 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

    Shell commands in SKILL.md call:

    • npx

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md. Its commands use npx, which can reach the network depending on how they are called.

    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

Helios Studio loads about 866 tokens when it runs. Until then it costs about 41 tokens; SKILL.md has 405 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
~866

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 c6b0c13, republished under its Apache-2.0 licence (© BintzGavin). 405 words, ~866 tokens.

Download SKILL.mdSave it as .claude/skills/helios-studio/SKILL.md (or your agent's skills folder).
name
helios-studio
description
Studio tool for developing and previewing Helios compositions. Use when you want to launch the interactive development environment or manage assets.

Helios Studio

The Helios Studio is a Vite-based development server and preview environment. It provides a hot-reloading environment for building compositions and acts as the "Editor" interface for Helios projects.

Quick Start

Run the studio from your project root:

bash
npx @helios-project/cli studio

This will start a local server (typically at http://localhost:5173) where you can view and debug your composition.

Features

Playback & Preview
  • Interactive Timeline: Scrub through your animation frame-by-frame.
  • Hot Reloading: Preserves timeline state (current frame) when you edit code.
  • Audio Controls: Volume slider and Mute toggle.
  • Safe Area Guides: Toggle Action/Title Safe guides and Crosshair.
  • Keyboard Shortcuts:
    • Space: Play/Pause
    • Arrow Left/Right: Step 1 frame
    • Shift + Arrow: Step 10 frames
    • Home: Seek to start
    • I / O: Set In / Out points (Playback Range)
    • L: Toggle Loop
MCP Server

The Studio runs a Model Context Protocol (MCP) server, allowing AI agents to:

  • Inspect composition schemas.
  • Update input props.
  • Trigger renders.
  • Create new compositions.
Props Editor

The Props Editor generates a UI based on your HeliosSchema.

  • Groups: Organize props into collapsible sections using the group schema property.
  • Schema-Aware Inputs:
    • number: Slider (if min/max set), Stepped Slider (if step set).
    • color: Color picker.
    • boolean: Toggle switch.
    • string: Text input or Enum dropdown.
    • image, video, audio, font: Asset selector with preview.
    • model: 3D Model selector (.glb, .gltf).
    • json: JSON file selector.
    • shader: Shader file selector (.glsl).
    • Recursive Support: Generates nested UIs for object and array types.
  • Drag & Drop: Drag assets from the Assets Panel directly into compatible inputs.
  • Metadata Editing: Click "Edit Composition" to change Width, Height, FPS, and Duration.
Show full SKILL.md (158 more words)Show less
Assets Management
  • Assets Panel: View and manage files in your assets/ directory.
  • Upload: Drag & drop files onto the panel to upload them.
  • Previews: Rich previews for video (hover-play), audio, fonts, and images.
  • Supported Types:
    • Images: jpg, png, svg, webp
    • Audio: mp3, wav, ogg
    • Video: mp4, webm
    • 3D: glb, gltf
    • Data: json
    • Shaders: glsl, vert, frag
Render Management
  • Renders Panel: Trigger server-side renders directly from the UI.
  • Configuration: Select format (MP4/WebM), resolution, and codec.
  • Progress: Track render progress and cancel jobs if needed.
  • Persistent Jobs: Render history persists across server restarts.
  • Client-Side Export: Export directly from the browser using WebCodecs.

Environment Variables

  • HELIOS_PROJECT_ROOT: Override the root directory scanning path.
    bash
    HELIOS_PROJECT_ROOT=./my-project npx @helios-project/cli studio

Common Issues

  • Port in Use: If 5173 is taken, Vite will try the next available port. Check the terminal output.
  • File Not Found: Ensure your composition HTML file exists in the directory or subdirectories of the root.

Source Files

  • CLI Command: packages/cli/src/commands/studio.ts
  • Studio App: packages/studio/

© BintzGavin, Apache-2.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in skills/studio of BintzGavin/helios.

Open the folder on GitHubat commit c6b0c13

Compare with similar skills

Helios Studio 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.

Helios Studio compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Helios Studio this skillBintzGavin/helios118—~866Automated safety check: PassApache-2.0
Horizon Speechpeters/horizon715—~1.8kAutomated safety check: PassMIT
Text To Sfxsonilo-ai/skills1151 repos~1.6kAutomated safety check: NotesMIT
Video To Musicsonilo-ai/skills1151 repos~4kAutomated safety check: NotesMIT
Resolve Audiosamuelgursky/davinci-resolve-mcp3.4k—~1.3kAutomated safety check: PassMIT
Canvasight OpenNiall-Young/Canvasight213—~1.1kAutomated safety check: PassMIT

Similar skills

  • Horizon Speech

    peters/horizon

    Check that a microphone is usable for Horizon dictation and report which layer is at fault — no signal, bad level, or a genuine model/accent limit.

    715 GitHub stars~1.8k tokensUpdated today
    Media & CreativeAuto-check passed

  • Text To Sfx

    sonilo-ai/skills

    Generate a sound effect from a text description using Sonilo — a UI chime, a whoosh, an impact, ambience, a stylized cue — when there is no video to match.

    115 GitHub starsUsed in 1 repo~1.6k tokens
    Media & CreativeAuto-check: notes

  • Video To Music

    sonilo-ai/skills

    Score a video with original music using Sonilo — the model watches the cut and matches pacing, motion, and emotion, returning either the audio or a new video with the score muxed in.

    115 GitHub starsUsed in 1 repo~4k tokens
    Media & CreativeAuto-check: notes

  • Resolve Audio

    samuelgursky/davinci-resolve-mcp

    Audio and Fairlight work in the DaVinci Resolve MCP. An agent skill from samuelgursky/davinci-resolve-mcp.

    3.4k GitHub stars~1.3k tokensUpdated today
    Media & CreativeAuto-check passed

  • Canvasight Open

    Niall-Young/Canvasight

    Open, reopen, attach, and verify Canvasight's Codex native widget, or explicitly open a browser fallback.

    213 GitHub stars~1.1k tokensUpdated 15 days ago
    Media & CreativeAuto-check passed

  • Music

    guaardvark/guaardvark

    Generate full songs with vocals or instrumentals (ACE-Step) and sound effects or ambience (Stable Audio Open) on the user's GPU through Guaardvark's Audio Foundry.

    257 GitHub stars~710 tokensUpdated today
    Media & CreativeAuto-check passed

More from BintzGavin/helios

All 16 skills in this repo

  • Make Video

    BintzGavin/helios

    Make videos drawn with code: motion graphics, launch and explainer videos, animated shorts, animated charts and data, logo reveals, social clips, music visualizers, UI demos and GIF loops.

    118 GitHub stars~2k tokensUpdated today
    Auto-check passed

  • Create Composition

    BintzGavin/helios

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

    118 GitHub stars~865 tokensUpdated today
    Auto-check passed

  • Helios Core

    BintzGavin/helios

    Core API for Helios video engine. An agent skill from BintzGavin/helios.

    118 GitHub stars~3k tokensUpdated today
    Auto-check passed

  • Helios Getting Started

    BintzGavin/helios

    Installation and quick start guide for Helios video engine. An agent skill from BintzGavin/helios.

    118 GitHub stars~1.8k tokensUpdated today
    Auto-check passed

  • Helios Player

    BintzGavin/helios

    Player API for embedding Helios compositions in web pages. An agent skill from BintzGavin/helios.

    118 GitHub stars~1.8k tokensUpdated today
    Auto-check passed

  • Helios Renderer

    BintzGavin/helios

    Renderer API for generating video/image output from Helios compositions.

    118 GitHub stars~1.8k tokensUpdated today
    Auto-check passed

Works with

Categories

Questions about Helios Studio

What does Helios Studio do?

Studio tool for developing and previewing Helios compositions. Helios Studio is an agent skill from BintzGavin/helios. Studio tool for developing and previewing Helios compositions.

When should I use Helios Studio?

Helios Studio fits situations like: you want to launch the interactive development environment.

How do I install Helios Studio in Claude Code?

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

How do I install Helios Studio in Codex?

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

Can I use Helios Studio 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 helios-studio -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/helios-studio, .gemini/skills/helios-studio, .github/skills/helios-studio and .opencode/skills/helios-studio in your project.

What does Helios Studio need to run?

Going by SKILL.md and its folder, Helios Studio needs the command-line tools its instructions call (npx). Our summary lists: Node.js.

Does Helios Studio access the network?

SKILL.md contains no URLs. Its commands use npx, which can reach the network depending on how they are called. This is read from the text; nothing was executed.

Is Helios Studio 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 Helios Studio use?

Helios Studio 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 Helios Studio use?

About 866 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 Helios Studio?

Skills that share tags, products or a category with Helios Studio: Horizon Speech (peters/horizon, 715 stars), Text To Sfx (sonilo-ai/skills, 115 stars), Video To Music (sonilo-ai/skills, 115 stars) and Resolve Audio (samuelgursky/davinci-resolve-mcp, 3.4k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Helios Studio?

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 9, 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.