io.github.asume21/music-theory-mcp

NPM · MUSIC-THEORY-MCP · SCANNED AUG 3

Scales, chords, progressions, key detection, and genre intelligence for your AI. No API keys needed.

Available components

+23 this week 63 63 Trust /100

Trust breakdown (6 categories)

How this component scores in each security and reliability category. Every signal is checked automatically from public evidence about the published package, including repeated runs of it in an isolated sandbox, and we only credit what we can confirm. How we score →

Supply Chain Security87

No malware found by supply-chain analysis.Pass
Only part of the dependency tree could be resolved (95 of 99), so this covers what we could see, not the whole tree.Partial
No install/post-install scripts declared.Pass
Only part of the dependency tree could be resolved (95 of 99), so this covers what we could see, not the whole tree. View diagnostics → Partial

Provenance & Transparency19

Repository check failed: the declared repository URL returned HTTP 404. See how to fix → View diagnostics → Fail
Provenance check failed: no build-provenance attestation is published. See how to fix → View diagnostics → Fail
Clear OSI-approved license (MIT).Pass
Actively maintained (last published 123 days ago).Pass
Security-disclosure policy not yet verified: we couldn't inspect the source repository.Unverified

Schema Quality & AI Usability70

AI-judged instruction clarity (good).Pass
Tool/resource definitions use about 1151 tokens (~88/item across 13 items; 13 tools + 0 resources), lean.Pass
Usage-examples check failed: none of the tools include examples. See how to fix → Fail

Stability & Change Management27

Stability observed for 8 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial

Tool Coverage97

100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
92% of tool parameters carry a description.Partial

Capabilities100

Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.Pass

Install

Add this component to your MCP client. Where a client-specific snippet is available, pick your client below and copy it straight into your config; otherwise use the connection detail shown.

npm · music-theory-mcp

Claude Codex opencode OpenClaw Hermes Other

# add to Claude Code

claude mcp add asume21-music-theory-mcp -- npx -y music-theory-mcp

# add to Codex CLI

codex mcp add asume21-music-theory-mcp -- npx -y music-theory-mcp

// opencode.json

{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "asume21-music-theory-mcp": {
      "type": "local",
      "command": [
        "npx",
        "-y",
        "music-theory-mcp"
      ],
      "enabled": true
    }
  }
}

# add to OpenClaw

openclaw mcp add asume21-music-theory-mcp --command npx --arg -y --arg music-theory-mcp

# ~/.hermes/config.yaml

mcp_servers:
  asume21-music-theory-mcp:
    command: "npx"
    args: ["-y", "music-theory-mcp"]

// mcp.json

{
  "mcpServers": {
    "asume21-music-theory-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "music-theory-mcp"
      ]
    }
  }
}

Changelog

Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.

3 Aug 26 +48
- Provenance: unverified → fail ▼ security
- Install scripts: unverified → pass ▲ security
- Known CVEs: unverified → partial ▲ security
- Tool coverage: unverified → 100 ▲ functional
- License: unverified → pass ▲ functional
- Dependency health: unverified → partial ▲ functional
- Maintenance: unverified → pass ▲ functional
- Stability: unverified → 0.27 ▲ functional
- MCP protocol: unverified → pass ▲ functional
- Schema quality: unverified → good ▲ functional
- Licence: MIT functional
2 Aug 26 −1
- Malware scan: unverified → pass ▲ security
- Tool coverage: 100 → unverified ▼ functional
1 Aug 26 −5
- Stability: Stability not yet verified: we do not have a sandbox capture of the MCP schema this version of the package serves yet. security
- Capabilities: pass → unverified ▼ functional
31 Jul 26 +3
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
30 Jul 26 −22
- Tool coverage: 100 → unverified ▼ functional
- First check of Schema quality: unverified functional
27 Jul 26 40

First indexed and scored.

Show 3 earlier entries Hide earlier entries

Diagnostics

Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.

Captured 3 Aug 2026 · Analysed npm/[email protected]

Provenance none

Ecosystem: npm · Outcome: none

Dependencies 95 packages

95 packages in the resolved dependency tree · 95 deprecated · 29 stale.

The dependency tree was only partially resolved, so these counts may be incomplete.

MCP tools — 13 exposed · ~1,151 tokens

The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability.

Tool Tokens

detect_key ~86

Detect the most likely musical key from a set of observed notes. Returns top candidates with confidence scores. Useful for analyzing melodies or MIDI data. [PRO — requires CODEDSWITCH_API_KEY]

Input Output Examples

Name	Type	Req	Description
notes	array	yes	Array of note names observed in the piece (e.g., ["C", "D", "E", "F", "G", "A", "B"])

No output schema declared.

No examples provided.

get_chord ~108

Get the notes and intervals for any chord type. Supports triads, 7ths, 9ths, 11ths, 13ths, sus, aug, dim, and more (22+ chord types). [FREE]

Input Output Examples

Name	Type	Req	Description
root	string	yes	Root note (e.g., "C", "F#", "Bb")
type	string	yes	Chord type (e.g., "major", "minor", "dom7", "maj7", "sus2")

No output schema declared.

No examples provided.

get_diatonic_chords ~71

Get all 7 diatonic chords in a key with Roman numerals, chord symbols, and notes. [PRO — requires CODEDSWITCH_API_KEY]

Input Output Examples

Name	Type	Req	Description
key	string	yes	Key root note (e.g., "C", "Ab")
mode	string	—	—

No output schema declared.

No examples provided.

get_genre_profile ~145

Get full genre intelligence: common chord progressions, scales, BPM range, instruments, rhythmic feel, swing amount, common keys, and mood descriptors. Supports trap, boom_bap, drill, lofi_hiphop, rnb, pop, afrobeats, reggaeton, jazz, edm, gospel. [PRO — requires CODEDSWITCH_API_KEY]

Input Output Examples

Name	Type	Req	Description
genre	string	yes	Genre name (e.g., "trap", "boom_bap", "lofi_hiphop", "rnb", "drill", "afrobeats", "jazz", "edm", "pop", "reggaeton", "gospel")

No output schema declared.

No examples provided.

get_genre_rhythms ~63

Get common drum/rhythm patterns for a genre. Returns kick, snare, and hi-hat step patterns ready to load into a beat maker. [PRO — requires CODEDSWITCH_API_KEY]

Input Output Examples

Name	Type	Req	Description
genre	string	yes	Genre name

No output schema declared.

No examples provided.

get_interval ~50

Get the musical interval name between two notes (e.g., C to G = P5). [FREE]

Input Output Examples

Name	Type	Req	Description
note_a	string	yes	First note
note_b	string	yes	Second note

No output schema declared.

No examples provided.

get_scale ~114

Get the notes, intervals, and modes for any musical scale. Supports 20+ scale types including major, minor, pentatonic, blues, dorian, phrygian, lydian, mixolydian, and more. [FREE]

Input Output Examples

Name	Type	Req	Description
root	string	yes	Root note (e.g., "C", "F#", "Bb")
type	string	yes	Scale type (e.g., "major", "natural_minor", "pentatonic_minor", "blues", "dorian")

No output schema declared.

No examples provided.

identify_chord ~65

Identify a chord from a set of note names. Returns all possible interpretations with root, type, and inversion. [PRO — requires CODEDSWITCH_API_KEY]

Input Output Examples

Name	Type	Req	Description
notes	array	yes	Array of note names (e.g., ["C", "E", "G"])

No output schema declared.

No examples provided.

resolve_progression ~108

Resolve a Roman numeral chord progression (e.g., I-V-vi-IV) to actual chord names and notes in a given key. [PRO — requires CODEDSWITCH_API_KEY]

Input Output Examples

Name	Type	Req	Description
key	string	yes	Key root note (e.g., "C", "F#")
mode	string	—	Major or minor key
numerals	array	yes	Chord progression as Roman numerals (e.g., ["I", "V", "vi", "IV"])

No output schema declared.

No examples provided.

suggest_genre ~113

Suggest a genre based on BPM, key, mood, or scale. Returns ranked matches with reasoning. [PRO — requires CODEDSWITCH_API_KEY]

Input Output Examples

Name	Type	Req	Description
bpm	number	—	Beats per minute
key	string	—	Musical key (e.g., "C", "F#")
mood	string	—	Mood keyword (e.g., "dark", "chill", "energetic")
scale	string	—	Scale type (e.g., "natural_minor", "dorian")

No output schema declared.

No examples provided.

suggest_next_chord ~86

Suggest what chord should come next based on common voice leading tendencies. Given a current chord and key, returns ranked suggestions. [PRO — requires CODEDSWITCH_API_KEY]

Input Output Examples

Name	Type	Req	Description
current_numeral	string	yes	Current chord as Roman numeral (e.g., "V", "vi")
key	string	yes	Key root note
mode	string	—	—

No output schema declared.

No examples provided.

transpose_note ~71

Transpose a single note up or down by a number of semitones. [FREE]

Input Output Examples

Name	Type	Req	Description
note	string	yes	Note to transpose (e.g., "C", "F#")
semitones	number	yes	Number of semitones to shift (positive = up, negative = down)

No output schema declared.

No examples provided.

transpose_progression ~71

Transpose an entire chord progression by a number of semitones. Takes an array of {root, type} objects. [PRO — requires CODEDSWITCH_API_KEY]

Input Output Examples

Name	Type	Req	Description
chords	array	yes	Array of chords to transpose
semitones	number	yes	Semitones to shift

No output schema declared.

No examples provided.

On this page

Handy links

Scoring key

80+ high trust
60–79 medium
below 60 low

How we score

Score history · last 30 days

27 Jul 3 Aug