Zeltor Music Tools

com.zeltorlabs/music-toolsVersion 1.1.0

Check if two songs mix (Camelot key, BPM), read shared song DNA reports, tempo and nightcore math.

Status

Responds231 msNov 14, 2026, 14:24 UTCAnswered our handshake without sign-in.

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Last checked: Nov 14, 2026, 14:24 UTC
Latency: 231 ms
Remotes responding: 1 of 1
Sign-in: No sign-in
Hosting: Hosted outside the EU (detected)
Registry data as of: Nov 14, 2026, 22:14 UTC

Data from the official MCP Registry, checked by run.zero. How we check

Connect

Streamable HTTP

https://zeltorlabs.com/mcpResponds231 msNov 14, 2026, 14:24 UTC

No sign-in

Claude Code

claude mcp add --transport http music-tools https://zeltorlabs.com/mcp

Claude Desktop and claude.ai

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Settings > Connectors > Add custom connector
Name: music-tools
Remote MCP server URL: https://zeltorlabs.com/mcp

Cursor

{
  "mcpServers": {
    "music-tools": {
      "url": "https://zeltorlabs.com/mcp"
    }
  }
}

VS Code

code --add-mcp '{"name":"music-tools","type":"http","url":"https://zeltorlabs.com/mcp"}'

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Tools

6 tools

Tools of Zeltor Music Tools
	Description		Read-only	Idempotent	Open world
`camelot`Gives the Camelot wheel code for a key and the three other keys that mix cleanly with it (one step either way with the same letter, and the relative major or minor).	Gives the Camelot wheel code for a key and the three other keys that mix cleanly with it (one step either way with the same letter, and the relative major or minor).	No	Yes	Yes	No
`check_mix`Decides whether two songs will mix well, from their keys and BPMs, using the Camelot wheel and DJ tempo limits (about 3% sounds natural, up to about 16% is usable, half and double time count). Returns a verdict, the tempo change in percent and the target BPM for track B, the smallest key shift in semitones if the keys clash, and a link to make the matched audio.	Decides whether two songs will mix well, from their keys and BPMs, using the Camelot wheel and DJ tempo limits (about 3% sounds natural, up to about 16% is usable, half and double time count). Returns a verdict, the tempo change in percent and the target BPM for track B, the smallest key shift in semitones if the keys clash, and a link to make the matched audio.	No	Yes	Yes	No
`song_report`Reads the song DNA from a MusicMind report the person made on zeltorlabs.com and shared: key and Camelot code with the keys that mix with it, BPM, genre mix, section structure with energy, and production DNA (energy profile, mood, arrangement density, compression, biggest moments). Takes the share link (https://zeltorlabs.com/report/r/<code>) or its code. Use the key and BPM with check_mix to compare it with another song. If the person has no report yet, they can make one free at https://zeltorlabs.com/analyze (the audio is analyzed in their browser).	Reads the song DNA from a MusicMind report the person made on zeltorlabs.com and shared: key and Camelot code with the keys that mix with it, BPM, genre mix, section structure with energy, and production DNA (energy profile, mood, arrangement density, compression, biggest moments). Takes the share link (https://zeltorlabs.com/report/r/<code>) or its code. Use the key and BPM with check_mix to compare it with another song. If the person has no report yet, they can make one free at https://zeltorlabs.com/analyze (the audio is analyzed in their browser).	No	Yes	Yes	No
`speed_pitch`For a nightcore (faster and higher) or slowed (slower and lower) version: the pitch change in semitones for a speed, the new BPM if given, and typical settings. Defaults: nightcore 1.25x, slowed 0.80x.	For a nightcore (faster and higher) or slowed (slower and lower) version: the pitch change in semitones for a speed, the new BPM if given, and typical settings. Defaults: nightcore 1.25x, slowed 0.80x.	No	Yes	Yes	No
`tempo_change`Percent change and playback rate to go from one BPM to another, how noticeable it will sound, the pitch change if it is not time-stretched, and the half and double time of the target.	Percent change and playback rate to go from one BPM to another, how noticeable it will sound, the pitch change if it is not time-stretched, and the half and double time of the target.	No	Yes	Yes	No
`transpose`Moves a key up or down by semitones and gives the new key name and Camelot code, with a note on how natural the shift will sound.	Moves a key up or down by semitones and gives the new key name and Camelot code, with a note on how natural the shift will sound.	No	Yes	Yes	No

Details

Registry status: Active
Published: Oct 31, 2026
Updated: Oct 31, 2026
Website: https://zeltorlabs.com/⁠ (opens in a new tab)
Repository: Not given
Categories (suggested): Design and mediaSuggested categories are assigned automatically from the registry text and may be wrong. Verified operators can correct them.
GDPR: Not declared

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