MCP For Claude Marketplace
Chord Constructor

Chord Constructor MCP Connector for Claude

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Decompose chord notation into notes, inversions, and harmonic roles.

4 tools Official Updated Jun 28, 2026 Official Vinkius Partner
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The Chord Constructor MCP server is a powerful musical engine that allows AI agents to analyze complex chord structures. By using tools like parse_chord_string, you can break down any notation into its constituent intervals and roots. The server also provides advanced music theory capabilities, such as calculating all possible inversions with get_chord_inversions, generating specific textures via generate_voicings (supporting both closed and open styles), and identifying the functional role of a chord in a key using determine_harmonic_role. This makes it an essential tool for music composition, theory analysis, and automated arrangement tasks.

music-theorychordscompositionaudionotation

4 tools expose this connector's capabilities to your AI agent.

determine_harmonic_role

Identifies the functional role of a chord within a specific musical key

generate_voicings

Returns both voicings. Arranges a set of notes into specific "closed" or "open" musical textures

get_chord_inversions

Returns inversions with bassNote and fullStack. Calculates all possible permutations of a chord where different notes serve as the bass

parse_chord_string

Returns root, intervals, and normalized name. Converts a standard chord name string into its structured component parts

See how to talk to your AI agent using Chord Constructor.

Parse the chord 'Ebmaj7'.

The `parse_chord_string` tool identifies the root as Eb and the intervals as major third, perfect fifth, and minor seventh.

What are the inversions for the notes [C, E, G]?

Using `get_chord_inversions`, you can find all three permutations: root position (C-E-G), first inversion (E-G-C), and second inversion (G-C-E).

Generate an open voicing for [C, E, G, B].

The `generate_voicings` tool produces an expanded arrangement of the notes to create more space in the sound.

You can parse over 80 types of chords, including major, minor, augmented, diminished, and extended chords like 7#11 or 9th chords.

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