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brightlikethelight

music21-mcp-server

by brightlikethelight
OverviewSchemaRelated ServersScoreDiscussions
Python
Local

Server Configuration

Describes the environment variables required to run the server.

NameRequiredDescriptionDefault
MUSIC21_MCP_HOSTNoServer host (used by HTTP adapter and launcher)127.0.0.1
MUSIC21_MCP_PORTNoServer port (used by HTTP adapter and launcher)8000
MUSIC21_MCP_TIMEOUTNoGeneral async operation timeout in seconds30
MUSIC21_CORS_ORIGINSNoCORS origins for HTTP adapter (comma-separated)http://localhost:*
MUSIC21_TOOL_TIMEOUTNoPer-tool execution timeout in seconds30
MUSIC21_BATCH_TIMEOUTNoBatch processing timeout in seconds30
MUSIC21_CHORD_ANALYSIS_TIMEOUTNoChord analysis timeout in seconds60

Instructions

Guidance the server publishes about itself, which clients place ahead of the tool catalog so the model reads it before choosing anything.

This server publishes no instructions, or was last inspected before Glama recorded them.

Capabilities

Features and capabilities supported by this server

Protocol revision2025-11-25

CapabilityDetails
tasks
{
  "list": {},
  "cancel": {},
  "requests": {
    "tools": {
      "call": {}
    },
    "prompts": {
      "get": {}
    },
    "resources": {
      "read": {}
    }
  }
}
tools
{
  "listChanged": true
}
prompts
{
  "listChanged": false
}
resources
{
  "subscribe": false,
  "listChanged": false
}
experimental
{}

Tools

Functions exposed to the LLM to take actions

NameDescription
import_scoreC

Import a score from various sources

list_scoresC

List all available scores

score_infoC

Get detailed information about a score

export_scoreD

Export a score to various formats

delete_scoreC

Delete a score from storage

key_analysisC

Analyze the key signature of a score

chord_analysisC

Analyze chord progressions in a score

harmony_analysisC

Perform harmony analysis (roman numeral or functional)

voice_leading_analysisC

Analyze voice leading patterns in a score

pattern_recognitionD

Recognize patterns in music

harmonize_melodyC

Generate harmonization for a melody in various styles (classical, jazz, pop, modal)

generate_counterpointC

Generate species counterpoint (1=note-against-note, 2=2:1, 3=3:1, 4=syncopated, 5=florid)

imitate_styleB

Generate music imitating a specific composer style (bach, mozart, chopin, debussy) or analyze score for style

health_checkB

Check server and adapter health

Prompts

Interactive templates invoked by user choice

NameDescription

No prompts

Resources

Contextual data attached and managed by the client

NameDescription
list_scores_resourceList all scores as an MCP resource

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