# Lots of Sounds

> CC0 sound effects API for AI agents — search, preview, and download via MCP.

- name: com.lotsofsounds/mcp
- version: 1.0.0
- connection class: R0 (autonomous)
- trust: 100/100
- quality: 75/100 (good)
- owner: not claimed
- descriptor: https://api.protogrid.dev/v1/servers/com.lotsofsounds%2Fmcp
- tools: https://api.protogrid.dev/v1/servers/com.lotsofsounds%2Fmcp/tools

**An agent can connect right now, no human step.** Remote endpoint, no authentication, reachable on the last probe.

## Connection (mcpServers)

```json
{
  "mcpServers": {
    "lotsofsounds": {
      "type": "http",
      "url": "https://api.lotsofsounds.com/mcp"
    }
  }
}
```


## Trust

- hygiene: 100
- liveness: 100
- freshness: 100
- provenance: 100
- drivers: +repository +namespace-matches-repo +dns-namespace +website +reachable +uptime-100% +updated-30d-ago
- Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed.

## Quality 75/100 (good)

### protocol: 75 (weight 25)

- warn `protocol.modern`: newest supported version is 2025-11-25; 2026-07-28 not supported, older versions are deprecated until 2027-07-28
- n/a `protocol.stateless`: only applies to 2026-07-28 servers
- pass `protocol.transport`: streamable HTTP
- n/a `protocol.list_ttl`: only applies to 2026-07-28 servers

### authorization: n/a (weight 15)

- n/a `auth.prm`, `auth.as_metadata`, `auth.cimd`: no remote uses OAuth
- n/a `auth.secret_in_url`: no templated URL

### tool hygiene: 100 (weight 30)

- pass `tools.descriptions`: every tool has a description
- pass `tools.description_length`: descriptions are concise
- pass `tools.schemas`: every tool has an object input schema
- pass `tools.annotations`: 5 of 5 tools declare readOnlyHint or destructiveHint
- pass `tools.directory_hints`: every tool declares readOnlyHint, destructiveHint, idempotentHint and openWorldHint
- pass `tools.token_cost`: about 764 tokens to load every tool
- pass `tools.api_dump`: tools are not a one-to-one API dump

### stability: 25 (weight 15)

- warn `stability.changes`: 7 tool changes in 30 days
- fail `stability.rug_pull`: 3 tools kept their name but changed most of their description in 30 days; review before trusting them

### dependencies: n/a (weight 15)

- n/a `deps.known_vulns`, `deps.mcp_sdk_version`, `deps.resolvable`: no npm or PyPI package

- tools: 5, about 764 tokens to load them all
- tool set hash: 5f6b12daf56782033037c550b8e99457
- tools last changed: 2026-10-19T14:09:56.487Z
- badge: [![protogrid quality](https://protogrid.dev/badge/com.lotsofsounds/mcp.svg)](https://protogrid.dev/servers/com.lotsofsounds/mcp)
- Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed.

### Tool changes

- 2026-10-19 `download_sound` changed (title)
- 2026-10-05 `search_sounds` changed (description, inputSchema)
  - before: Search the bounded Lots of Sounds CC0 catalog by keyword, tags, category, and duration. A connected account is required. The query is a case-insensitive substring match on the sound name and description, so use short keywords and narrow the search with tags or max_duration.
  - after: Search the bounded Lots of Sounds CC0 catalog by keyword, tags, category, and duration. A connected account is required. Each word in the query must match the sound name, description or a tag, so use short keywords and narrow the search with tags or max_duration. Results include timing (onset, peak and tail in milliseconds) and loudness (LUFS and true peak) when the sound has been analysed.
- 2026-10-02 `get_profile` added
  - Return the stable Lots of Sounds profile connected to this request. Use it only to identify the active plugin account.
- 2026-10-02 `download_sound` changed (description, annotations)
  - before: Return a time-limited signed download URL (expires in 1 hour) for a sound. Requires a Pro or Enterprise API key. Only call this when the user is ready to download.
  - after: Return a time-limited signed download URL that expires in one hour for a sound in the bounded Lots of Sounds catalog. A connected account is required. Use this only when the user is ready to download.
- 2026-10-02 `get_sound` changed (description, annotations) **meaning changed**
  - before: Fetch full metadata for one sound by id. Requires a Pro or Enterprise API key.
  - after: Fetch full metadata for one sound in the bounded Lots of Sounds catalog by ID. A connected account is required.
- 2026-10-02 `search_sounds` changed (description, inputSchema, annotations) **meaning changed**
  - before: Search the full royalty-free (CC0) catalog by natural-language query, tags, category, and duration. Requires a Pro or Enterprise API key. Prefer descriptive natural-language queries (e.g. 'gentle notification chime' over 'chime').
  - after: Search the bounded Lots of Sounds CC0 catalog by keyword, tags, category, and duration. A connected account is required. The query is a case-insensitive substring match on the sound name and description, so use short keywords and narrow the search with tags or max_duration.
- 2026-10-02 `browse_samples` changed (description, inputSchema, annotations) **meaning changed**
  - before: Return curated free CC0 sample sounds. No API key required. Use this to demo the catalog before a Pro key is available.
  - after: Return curated free CC0 sample sounds from the bounded Lots of Sounds catalog. No account is required.

Full history: https://api.protogrid.dev/v1/servers/com.lotsofsounds%2Fmcp/changes

## Remotes

- https://api.lotsofsounds.com/mcp (streamable-http, auth none, reachable true, uptime30d 1)

## Packages

_none_

## Tools (5)

- `browse_samples`: Return curated free CC0 sample sounds from the bounded Lots of Sounds catalog. No account is required.
- `download_sound`: Return a time-limited signed download URL that expires in one hour for a sound in the bounded Lots of Sounds catalog. A connected account is required. Use this only when the user is ready to download.
- `get_profile`: Return the stable Lots of Sounds profile connected to this request. Use it only to identify the active plugin account.
- `get_sound`: Fetch full metadata for one sound in the bounded Lots of Sounds catalog by ID. A connected account is required.
- `search_sounds`: Search the bounded Lots of Sounds CC0 catalog by keyword, tags, category, and duration. A connected account is required. Each word in the query must match the sound name, description or a tag, so use short keywords and narrow the search with tags or max_duration. Results include timing (onset, peak and tail in milliseconds) and loudness (LUFS and true peak) when the sound has been analysed.