161 free sound effects for apps, videos and AI agents. Click a waveform to hear it, and the arrow button to download it.
Five voices, each covering the same ten app actions: click, hover, toggle, notify, success, error, open, close, send and delete.
Interface sounds made in code, and real-world foley recorded with Seed Audio.
Install the Better SFX skill in Claude Code, Codex or any agent that supports skills. Your agent can then search the library, download the right sounds into your project and wire them up.
npx skills add devhims/better-sfxAgents without the skill can read catalog.json or llms.txt. Every sound has a stable file URL.
What Better SFX is, what you can do with the sounds, and how agents use them.
Better SFX is a free library of 161 short sound effects for apps, websites, videos and AI agents, made by video2ctx. It covers clicks, toggles, notifications, success and error cues, whooshes and transitions, keyboard and paper foley, and five matching UI sound sets.
Yes. Every sound is free for personal and commercial use, with no account and no credit required. The one rule is that you cannot resell or redistribute the sounds on their own. The full terms are in the Better SFX License.
Yes. You can use them in YouTube videos, Reels, TikToks, tutorials, screen recordings, product demos, ads and films, including monetized videos. Nobody is allowed to register the sounds with YouTube Content ID.
121 sounds are made in code with the Web Audio API. 40 are recordings generated with Seed Audio 1.0 and then trimmed, cleaned of silent gaps and matched in loudness.
Glass, wood, soft, retro 8-bit and mechanical. Each set covers the same ten app actions: click, hover, toggle, notify, success, error, open, close, send and delete, so one app can use a single set that sounds consistent.
Every sound is a 48 kHz, 16-bit mono WAV and a 128 kbps M4A, at a stable URL such as /sounds/glass-click.wav.
Yes. Install the Better SFX agent skill with "npx skills add devhims/better-sfx" in Claude Code, Codex or any agent that supports skills. It lets your agent search the library, download the right sounds into your project and wire them up. Agents can also read https://sfx.video2ctx.dev/catalog.json and https://sfx.video2ctx.dev/llms.txt directly.