MCP Server

Connect the Lotsofsounds sound effects API to Claude, Cursor, ChatGPT, and any AI agent with our free, open Model Context Protocol (MCP) server. Search, preview, and download royalty-free sounds from your AI assistant.

The sound effects MCP server for AI assistants

Lotsofsounds ships a hosted Model Context Protocol (MCP) server so AI assistants can search, inspect, and download thousands of royalty-free (CC0) sound effects without leaving the chat. Add one URL to Claude Desktop, Cursor, Windsurf, ChatGPT, or the OpenAI Agents SDK and your assistant can find the right sound for a game, app, video, or voice agent on demand.

Endpoint: https://api.lotsofsounds.com/mcp
Transport: Streamable HTTP (stateless)
Auth: your Lotsofsounds API key in the x-api-key header
Free tier: browse_samples works with no key — try it before you subscribe

Free to connect, Pro to search the full catalog

Browsing free sample sounds needs no key. Searching and downloading the full catalog requires a Pro or Enterprise plan — get your key from the API Keys dashboard.

Tools exposed

Tool	What it does	Auth
`browse_samples`	Returns curated free CC0 sample sounds	None
`search_sounds`	Searches the full catalog by natural language, tags, category, and duration	Pro / Enterprise
`get_sound`	Full metadata for a single sound	Pro / Enterprise
`download_sound`	Time-limited signed download URL (1 hour)	Pro / Enterprise

Add it to Claude Desktop

Claude Desktop connects to remote MCP servers through the mcp-remote bridge. Add this to your claude_desktop_config.json (Settings → Developer → Edit Config), then restart Claude:

{
  "mcpServers": {
    "lotsofsounds": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-remote",
        "https://api.lotsofsounds.com/mcp",
        "--header",
        "x-api-key:${LOS_API_KEY}"
      ],
      "env": { "LOS_API_KEY": "los_your_key" }
    }
  }
}

Ask Claude "find me a short dramatic cinematic hit" and it will call search_sounds for you.

Add it to Cursor

In ~/.cursor/mcp.json (or Settings → MCP → Add new server):

{
  "mcpServers": {
    "lotsofsounds": {
      "url": "https://api.lotsofsounds.com/mcp",
      "headers": { "x-api-key": "los_your_key" }
    }
  }
}

Windsurf, VS Code (Copilot MCP), and other Streamable-HTTP clients use the same url + headers shape.

Add it to Claude Code

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

Use it with the OpenAI Agents SDK

The hosted MCP server works as a tool source for GPT agents:

from agents import Agent, Runner
from agents.mcp import MCPServerStreamableHttp

sounds = MCPServerStreamableHttp(
    params={
        "url": "https://api.lotsofsounds.com/mcp",
        "headers": {"x-api-key": "los_your_key"},
    }
)

agent = Agent(
    name="Sound assistant",
    instructions="Help the user find royalty-free sound effects.",
    mcp_servers=[sounds],
)

result = await Runner.run(agent, "Find a gentle notification chime under 2 seconds")
print(result.final_output)

Use it with ChatGPT

In ChatGPT (Settings → Connectors → Add), point a custom connector at https://api.lotsofsounds.com/mcp and supply your x-api-key header. The search_sounds and download_sound tools become available in chat.

How the paywall works

The MCP server is a thin client over the same REST API — it never widens access beyond a caller's plan. Without a key, catalog tools return a friendly message pointing to pricing; the free browse_samples tool always works. This keeps the server safe to open-source and list in public MCP directories while the catalog stays behind the Pro tier.

LLM & AI Agent Integration — function-calling without MCP
Getting Started — get your API key
Pricing — Pro and Enterprise plans

MCP Server

On this page