sfx-tool

A sound effects workspace for AI agents: your agent makes the sounds, you hear and shape them.
_{Ask for a sound in plain words, hear it in the Studio a second later, and nudge it by ear until it is right. Everything runs on your computer.}

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Download  ·  Get started  ·  Agent skill

_{Works with}
 Claude Code  ·   Codex  ·   Node.js  ·   FFmpeg

What it does

Your agent writes each sound as a small recipe file, and the Studio plays it the moment the file changes. You listen, move a slider or pick one of eight variations, and the agent sees your changes too. When it sounds right, export a WAV or a whole typing track for your video.

• Describe a sound ("softer", "more wooden", "like a real keyboard") and your agent builds it; you never write audio code.
• Every change is live: waveform, spectrum and loudness checks update as you or the agent edit.
• Made on your computer, with no account, API key or credit needed. It starts with 34 example sounds (key taps, knocks, pops, chimes) to build from.

Get started

1. Install Node.js 18 or newer.
2. Copy the skill/ folder into your agent's skills folder (for Claude Code: ~/.claude/skills/sfx-tool).
3. Open a terminal in your project's folder and run the command below. It creates an sfx/ folder and opens the Studio in your browser.
4. Ask your agent in plain words, for example "Make a soft, wooden click for each typed letter, and a gentle chime when the line is done." The new sounds appear in the Studio, ready to tweak.

npx github:OpenRootdev/sfx-tool studio --open

What you need

• Node.js 18 or newer. Nothing else to install.
• An AI agent that can use skills and run commands, such as Claude Code or Codex. The Studio also works on its own.
• A browser for the Studio.

What's inside

• skill/SKILL.md · How your agent turns a description into a sound, and how it works with you in the Studio.
• studio/ · The page where you hear and shape the sounds.
• bin/sfx-tool.js · The command your agent (or you) runs: make sounds, variations and typing tracks.
• src/ · The sound models and the example sounds.

_{Preview media lives on the assets branch and translations on translations, so main holds only the tool.}

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_{MIT licence · OpenRootdev}