Vellium & Co

Directory › Unclassified › Build a chord

Build a chord

Build a chord from a root note and quality (major, minor, dim, aug, maj7, min7, dom7, dim7, half-dim7, sus2, sus4, maj6, min6). Notes are spelled by stacked thirds (C dom7 → C E G Bb). Returns the note names, MIDI numbers and semitone inter

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Our latest check (2026-10-11)

Answering
Yes — valid x402 payment terms
Time to answer
390 ms
Price
$0.002 per call
Paying buyers, last 30 days
2 (directory's own records)
Paid calls, last 30 days
2
Category
Unclassified
Address
https://music.openverbs.com/v1/chord

Accuracy: paid answers checked against an independent record

Not yet in our paid checks. A seller we have not checked has neither passed nor failed.

For agents

This page as JSON: /sellers/053afa804c72.json. Paid lookup by address: GET /api/seller?resource=… ($0.001, x402).

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