🎵 MIDI File MCP

A powerful MCP tool for parsing and manipulating MIDI files based on Tone.js

📖 Introduction

This is a MIDI file parsing and manipulation tool based on Tone.js and the @tonejs/midi library, providing functionality through MCP (Model Context Protocol) services. This tool allows you to easily read, analyze and modify MIDI files without delving into the complexities of the MIDI file format.

✨ Features

Read MIDI file information
Get and modify track, note, control change, and pitch bend information
Set MIDI file tempo (BPM)
Add new notes, control changes, and pitch bends to specific tracks
Add new tracks
Comprehensive error handling

📥 Prerequisites

Install Node.js: Ensure that the npx command can run normally. It is recommended to install the latest stable version from the Node.js official website

🔧 Usage

Use with an MCP client, supported clients include but are not limited to:

Cursor
Cherry Studio
Claude Desktop

Installing via Smithery

To install MIDI File Parser for Claude Desktop automatically via Smithery:

npx -y @smithery/cli install @xiaolaa2/midi-file-mcp --client claude

Cursor Configuration Example

Configure midi-file-mcp in Cursor:

"midi-file-mcp": {
    "command": "npx",
    "args": [
        "-y",
        "midi-file-mcp"
    ]
}

🎹 Using MIDI Parser MCP with Absolute Paths

All operations in MIDI Parser MCP require the absolute path to the MIDI file. This ensures that the tool can correctly locate and manipulate your MIDI files regardless of the current working directory.

Example Prompts

Here are some example prompts you can use with your AI assistant:

Get MIDI File Information:

Can you show me information about the MIDI file at D:\path\to\your\file.mid?

Analyzing Tracks:

Please analyze all tracks in D:\path\to\your\file.mid and tell me how many notes are in each track.

Setting Tempo:

Change the tempo of D:\path\to\your\file.mid to 120 BPM.

Working with Notes:

Show me all notes in track 1 of D:\path\to\your\file.mid.

Adding Notes:

Add a C4 note at position 0 with a duration of 1 beat to track 0 in D:\path\to\your\file.mid.

Available Operations

Operation	Description	Parameters
get_midi_info	Get general MIDI file information	filePath
set_tempo	Set the tempo (BPM) of a MIDI file	filePath, bpm
get_tracks_info	Get information about all tracks	filePath
get_track_info_by_index	Get information about a specific track	filePath, trackIndex
get_notes_by_index	Get all notes from a specific track	filePath, trackIndex
get_pitchbends_by_index	Get all pitch bends from a specific track	filePath, trackIndex
get_controlchanges_by_index	Get all control changes from a specific track	filePath, trackIndex
add_notes_by_index	Add notes to a specific track	filePath, trackIndex, notes
add_controlchanges_by_index	Add control changes to a specific track	filePath, trackIndex, controlchanges
add_pitchbends_by_index	Add pitch bends to a specific track	filePath, trackIndex, pitchbends
add_track	Add a new track to the MIDI file	filePath

Note: Always use double backslashes (\\) or forward slashes (/) in file paths when working with Windows paths to avoid errors.

📄 License

This project is licensed under the MIT License. See the LICENSE file for details.

🙏 Acknowledgements

Thanks to the following projects and libraries, without which this tool would not be possible:

Tone.js - Web Audio Framework
@tonejs/midi - MIDI file parsing and manipulation library
MCP (Model Context Protocol) - Makes tool integration into AI assistants possible