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Music Scale Builder
x402
Music Scale Builder is a paid API for AI agents from music.openverbs.com, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-14).
Builds a musical scale from a root note and scale type, returning note names, MIDI numbers, and semitone intervals
Price / call$0.002
Success—
StatusUnknown
How this service works
Build a scale from a root note and type (major, natural-minor, harmonic-minor, melodic-minor, dorian, phrygian, lydian, mixolydian, locrian, major-pentatonic, minor-pentatonic, blues, chromatic). Heptatonic scales and modes are spelled diatonically (F major → F G A Bb C D E). Returns the note names, MIDI numbers and semitone intervals.
Output
Returns the complete list of note names (spelled diatonically where applicable, e.g. Bb not A#), their corresponding MIDI note numbers, and the semitone intervals between consecutive scale degrees.
Example use cases
Generate chord-compatible scale for songwriting
“I'm writing a song in D dorian — can you build the full scale from D4 with all the note names and MIDI numbers so I know which notes to use?”
Music education scale drill tool
“Show me every note in the Bb harmonic-minor scale starting at Bb3, spelled out with their MIDI numbers and the semitone intervals between them.”
MIDI sequencer scale lookup
“I need the MIDI note numbers for a C blues scale starting at C4 so I can program them into my sequencer.”
Technical details
Endpoint
POSThttps://music.openverbs.com/v1/scaleWhen to prefer
Use this endpoint when you need structured music-theory data — note names, MIDI values, and intervals — for any standard Western scale or mode. Prefer it over generic music-generation endpoints when you need diatonically correct spelling (e.g. F major returns Bb not A#) or precise MIDI numbers for programmatic use in sequencers, DAWs, or music-theory applications.
Side effects
- Invalid root note format returns an error (e.g. missing octave number or malformed accidental)
- Unrecognized scale type enum value returns a validation error
- Missing required fields (root or type) returns a 400-level error
- Payment failure via x402 protocol blocks the request
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object |
Tags
x402
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