# Arcalune Music

> Search royalty-free BGM and sound effects (commercial use OK, no credit) and game fan arrangements.

- name: com.arcalune/music
- version: 1.0.0
- connection class: R0 (autonomous)
- trust: 79/100 flags: no-repository
- quality: 79/100 (good)
- owner: not claimed
- descriptor: https://api.protogrid.dev/v1/servers/com.arcalune%2Fmusic
- tools: https://api.protogrid.dev/v1/servers/com.arcalune%2Fmusic/tools

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

## Connection (mcpServers)

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


## Trust

- hygiene: 80
- liveness: 97
- freshness: 85
- provenance: 55
- drivers: +dns-namespace +website +reachable +uptime-92% ~updated-59d-ago -no-repository
- Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed.

## Quality 79/100 (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: 71 (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
- fail `tools.annotations`: no tool declares readOnlyHint or destructiveHint, so clients cannot tell safe calls from risky ones
- fail `tools.directory_hints`: no tool declares all four of readOnlyHint, destructiveHint, idempotentHint and openWorldHint; missing: list_tags (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); search_tracks (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); get_track (readOnlyHint, destructiveHint, idempotentHint, openWorldHint)
- pass `tools.token_cost`: about 648 tokens to load every tool
- pass `tools.api_dump`: tools are not a one-to-one API dump

### stability: 100 (weight 15)

- pass `stability.changes`: no tool changes in 30 days
- pass `stability.rug_pull`: no tool changed its meaning under the same name

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

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

- tools: 3, about 648 tokens to load them all
- tool set hash: f55bff062525b94b34a0a9ff69c6ac14
- badge: [![protogrid quality](https://protogrid.dev/badge/com.arcalune/music.svg)](https://protogrid.dev/servers/com.arcalune/music)
- Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed.

### Tool changes

_No tool definition changes recorded._

## Remotes

- https://arcalune.com/mcp (streamable-http, auth none, reachable true, uptime30d 0.91818184)

## Packages

_none_

## Tools (3)

- `get_track`: Get one track by id, together with related tracks from the same catalog. Returns the YouTube URL with the track's start position, the track page, and the download URL when the audio is distributed.
- `list_tags`: List every tag that can be passed to search_tracks, grouped by production use, genre, mood, usage, scene, source game, and usage rights, with how many tracks carry each tag.
- `search_tracks`: Search Arcalune Music for royalty-free BGM, sound effects, video game fan arrangements, and original vocal songs. Every track streams on YouTube, and the returned youtubeUrl jumps straight to where that track starts. When presenting results to a user, always include the youtubeUrl so they can listen to the track. Free BGM and sound effects allow commercial use without credit; fan arrangements and vocal songs are streaming-only.