Developers

Add sound effects to your app or agent

Search 12,000+ CC0 sound effects with a REST API, or connect an AI assistant to the hosted MCP server.

Base URL
api.lotsofsounds.com
Auth
x-api-key header
Search
Keyword + filters
Format
MP3
License
CC0, no attribution
Rate limit
2,500+/day

Quickstart

Find short whoosh sounds. Send your key in the x-api-key header.

curl -G https://api.lotsofsounds.com/api/v1/sounds \
  -H "x-api-key: $LOS_API_KEY" \
  --data-urlencode "q=whoosh" \
  --data-urlencode "max_duration=2" \
  --data-urlencode "limit=5"

MCP server for AI agents

Connect Claude, Cursor, ChatGPT or any MCP client to api.lotsofsounds.com/mcp.

claude mcp add lotsofsounds --transport http https://api.lotsofsounds.com/mcp \
  --header "x-api-key: los_your_key"
Full MCP setup guide

Example prompts

The assistant turns each request into a keyword search.

  • “Find me a cinematic boom”

    search_sounds(q: "boom", tags: ["cinematic"])

  • “Find five funny sounds for this video”

    search_sounds(q: "funny", limit: 5)

  • “Find a short UI success sound”

    search_sounds(q: "success", max_duration: 2)

Endpoints

GET/api/v1/soundsKeySearch by keyword, tags, category and duration
GET/api/v1/sounds/popularKeyMost downloaded sounds
GET/api/v1/sounds/{id}KeyMetadata for one sound
GET/api/v1/sounds/{id}/streamKeySigned URL for playback
GET/api/v1/sounds/{id}/downloadKeySigned MP3 download URL (1 hour)
GET/api/v1/sounds/sampleNoneFree sample sounds to test with

Rate limits

  • Pro $15/month2,500 requests/day
  • Enterprise $49/month50,000 requests/day

Responses include X-RateLimit-Remaining. Compare plans

Errors

  • 401Missing or invalid API key
  • 403Plan has no API access
  • 404Sound not found
  • 429Daily limit reached; resets at midnight UTC

Resources

Questions

Is there a sound effects API?

Yes. The Lots of Sounds REST API at https://api.lotsofsounds.com searches and downloads the full CC0 catalog. API and MCP access to the full catalog needs a Pro or Enterprise API key.

How does search work?

Keyword search across sound names and descriptions, plus tag, category and duration filters. Short keywords such as "whoosh" work best.

Can AI agents search the library?

Yes. Connect any MCP client to https://api.lotsofsounds.com/mcp, or call the REST API from a tool definition.

What license applies to API results?

Every sound is CC0: free for personal and commercial use, with no attribution required. A credit link to lotsofsounds.com is appreciated but optional.