# MusoKit music tools

> Chords, scales, transposition, capo and tempo maths, with links to free interactive music tools.

- name: com.musokit/musokit
- version: 1.0.0
- connection class: R0 (autonomous)
- trust: 82/100 flags: no-repository
- quality: 85/100 (good)
- owner: not claimed
- descriptor: https://api.protogrid.dev/v1/servers/com.musokit%2Fmusokit
- tools: https://api.protogrid.dev/v1/servers/com.musokit%2Fmusokit/tools

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

## Connection (mcpServers)

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


## Trust

- hygiene: 80
- liveness: 98
- freshness: 100
- provenance: 55
- drivers: +dns-namespace +website +reachable +uptime-96% +updated-20d-ago -no-repository
- Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed.

## Quality 85/100 (good)

### protocol: 75 (weight 25)

- warn `protocol.modern`: newest supported version is 2025-06-18; 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: 86 (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`: 6 of 6 tools declare readOnlyHint or destructiveHint
- fail `tools.directory_hints`: no tool declares all four of readOnlyHint, destructiveHint, idempotentHint and openWorldHint; missing: bpm_to_ms (destructiveHint, idempotentHint); scale_info (destructiveHint, idempotentHint); transpose_chords (destructiveHint, idempotentHint); …
- pass `tools.token_cost`: about 831 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: 6, about 831 tokens to load them all
- tool set hash: d1a330fb16dadf53d482a0fd5067f1c6
- badge: [![protogrid quality](https://protogrid.dev/badge/com.musokit/musokit.svg)](https://protogrid.dev/servers/com.musokit/musokit)
- 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://musokit.com/mcp (streamable-http, auth none, reachable true, uptime30d 0.9605263)

## Packages

_none_

## Tools (6)

- `bpm_to_ms`: Note lengths in milliseconds (straight, dotted, triplet) for a tempo, for setting delay, reverb pre-delay and LFO times.
- `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.
- `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.
- `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 something.
- `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, blues, whole-tone, phrygian-dominant.
- `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.