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MusoKit MCP server

Which MCP servers are MusoKit's own, from the official registry and from asking its own domain, whether they answer, and what they offer. A program checked each of these, nobody copied them from a product page.

read 2026-10-20

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Whose server it is
  • Registry namecom.musokit/musokitverified in the MCP registry

The registry name sits under musokit.com. The registry only lets a publisher use that namespace after proving control of the domain through DNS or HTTP.

When we asked itchecked 2026-10-20
  • Stateanswerschecked 2026-10-20
  • Tools6
  • Server calls itselfmusokit
  • Server version1.0.0
  • Protocol version2025-06-18

On 2026-10-20 the server answered initialize and tools/list without a sign-in. First answer in 95 ms.

Should an agent connect itSkip it
  • Its tools do none of the product's use cases we checked: Tune a guitar, bass, ukulele or voice; Practise ear training and rhythm reading.

Once connected

  • Parameters are untyped or undescribed in 2 of 6 tools: check arguments before calling.

Said by rules from the measurements above. The likely first call is a model's pick from the tool list; read its description before relying on it.

Measured dailydaily checks: 16, the first on 2026-10-20
  • INITE MCP score71 of 100answers 100 · does the job 0 · definitions 94 · context 100 · connects 100
  • What an agent can do with it0 of 2 use cases
  • Answered100% of days16 of 16 daily checks
  • Median first answer133 ms
  • Space in an agent's context≈ 837 tokensthe definitions of all its tools (6), which an agent carries on every turn
  • Tool definitionsA · 94 of 100
  • Typed results0 of 6 toolsdeclared outputSchema: results come typed, read once
  • Parameters without a description: in 2 of 6

What an agent can do with it

  • cannot · Tune a guitar, bass, ukulele or voice
  • not sure · Find chords and scales on the fretboard
  • cannot · Practise ear training and rhythm reading

Each of the product's use cases, put to Jev against this server's tool list: can an agent do it with these tools?

Worth a look

None of the five warning signs in these definitions.

A program checks the server once a day: initialize and tools/list, no model. Tokens are the definitions' length at about four characters a token. The grade averages six checks of every tool's name, description, schema and annotations; it says how well the tools are described, not whether they work. The score weighs what was measured and nothing else: answering (25%), doing the product's job (25%), definitions (20%), context (10%), use (10%) and how readily a client connects (10%). A part that was not measured is left out, and a hidden instruction caps the score at 40. The state of vendors' MCP servers: method and numbers →

Tools it offers6 tools · read 2026-10-20
  • chord_info

    Notes, formula and a guitar fingering for a chord symbol such as "Am7", "F#m", "Bbmaj7" or "C/G", plus free diagram image URLs and a link where the user can hear and see the chord.

  • scale_info

    Notes and step pattern of a scale or mode, with a link to hear it and see it on piano and guitar. Scales: major, minor, dorian, phrygian, lydian, mixolydian, locrian, harmonic-minor, melodic-minor, major-pentatonic, minor-pentatonic…

  • transpose_chords

    Transpose a chord progression up or down, either by semitones or from one key to another. Returns the new chords and a link to the transposer.

  • capo_finder

    For a song's chords, finds the capo fret that lets a guitarist play it with the easiest open chord shapes. Returns the top options and a link to the capo calculator.

  • bpm_to_ms

    Note lengths in milliseconds (straight, dotted, triplet) for a tempo, for setting delay, reverb pre-delay and LFO times.

  • open_music_tool

    Returns a ready-to-open link to a free MusoKit tool, preset where possible: a tuner for a specific instrument or tuning, a metronome at a tempo, a tone at a frequency, etc. Use when the user needs to actually tune, keep time or hear…

How to connect

Add the server to your MCP client config. Claude Desktop, Cursor and most other clients read this shape:

{
  "mcpServers": {
    "musokit": {
      "type": "http",
      "url": "https://musokit.com/mcp"
    }
  }
}

Add it

Claude Code, in a terminal

claude mcp add --transport http musokit https://musokit.com/mcp

Add to CursorAdd to VS Code

claude.ai, ChatGPT and other clients: add https://musokit.com/mcp as a custom connector in the settings.

Each line is something a program found when it went looking: the registry entry, the server's own answer, a spec that parses. A missing line means we did not find it, not that it does not exist.