The sound effects API for developers
Search, stream, and download thousands of royalty-free sounds with a simple REST API. One key, one header, works with any language, framework, or AI agent.
Free to browse. Pro starts at $15/mo for API access.
Preview sounds from the API
Browse full catalog →Cinematic Impact
UI Button Click
Footsteps on Gravel
Rain on Window
Ocean Waves Loop
Forest Ambience
Sci-fi Whoosh
Thunder Crack
Campfire Crackle
Lofi Vinyl Hiss
Underwater Bubbles
City Traffic
12,000+
Royalty-free sounds
CC0
License | no attribution
<100ms
Avg API response time
99.9%
Uptime SLA
Built for every use case
From game studios and product teams to AI apps, editors, and sleep tools, one API covers high-intent sound workflows.
Games & interactive apps
Load sound effects dynamically instead of bundling asset packs. Browse menu loops, retro cues, UI feedback, and cinematic game audio.
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Web & mobile apps
Add notification sounds, UI feedback, and product polish to your app with clicks, buttons, alerts, and interface effects.
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Content & media pipelines
Build editing pipelines around whooshes, hits, transitions, logo sounds, and cinematic backgrounds for trailers and short-form video.
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AI agents & copilots
Add clicks, pings, alerts, and assistant feedback sounds to chat apps, voice agents, tool calls, and realtime UX flows.
Open collectionHow it works
Three steps to sound effects in your app.
Get your API key
Sign up and grab your key from the dashboard. One header, no OAuth or SDKs.
Search by keyword
Search by keyword, then narrow by tag, category, and duration.
curl api.lotsofsounds.com/v1/sounds -d "q=gentle rain"Stream or download
Get signed URLs to stream in-app or download the file. Works from any stack.
Frequently asked questions
Lots of Sounds is a free library of CC0 sound effects. You can browse and preview every sound, play them on the online soundboard, edit audio with free browser tools, and search the catalog from code through the REST API or the MCP server.
Sign up for a Pro plan, generate an API key, and make a GET request to /api/v1/sounds with your search query. You'll get back JSON with sound metadata and can stream or download any result. It works from any language, including JavaScript, Python, Go, or even a cURL command.
Yes. Lotsofsounds is designed for programmatic use including AI agents and LLM function calling. The API uses simple GET requests with an API key header and returns clean JSON. Agents can also connect to the hosted MCP server at api.lotsofsounds.com/mcp. Send short keywords such as "whoosh" or "rain" in the q parameter, and add tags or duration filters to narrow results.
Yes. Every sound in the library is released under CC0: free for commercial use, with no attribution required. Use them in shipped products, games, AI applications, videos, and streams without licensing fees.
Sounds are delivered as MP3 files. Each sound page lists the duration, tags, and license.
Pro plans include 2,500 API requests per day and unlimited downloads. Enterprise plans include 50,000 requests per day and unlimited downloads. Rate limit headers (X-RateLimit-Remaining) are included in every response so your app can handle request limits gracefully.
No. The API is plain REST, so any HTTP client works. Add your API key as an x-api-key header and make standard GET requests. No SDK to install, no dependencies to manage, no breaking changes to track.
The library includes thousands of sounds across four categories: sound effects (clicks, impacts, footsteps, explosions), music tracks (beats, melodies, electronic), lofi (chill beats, vinyl crackle), and ambient (rain, forest, ocean, city). All searchable by keyword and filterable by tags and duration.
Yes. Anyone can browse the full catalog, preview sounds, and use the online soundboard and audio tools without an account. API and MCP access for programmatic search, streaming, and downloads starts at $15/month with the Pro plan.