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Saylor Innovations Pitch to Note
x402
Saylor Innovations Pitch to Note is a paid API for AI agents from saylorinnovations.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-31).
Converts a musical pitch (frequency, MIDI number, or note name) to its nearest note with cents offset, MIDI number, wavelength, harmonics, and neighboring notes
Price / call$0.01
Success—
StatusUnknown
How this service works
Nearest note, cents offset, MIDI, wavelength, harmonics and neighbors
Output
Returns the nearest note name and octave, how many cents the input pitch deviates from that note, the MIDI number, the wavelength in air (adjustable by temperature), a list of harmonics, and the neighboring notes above and below.
Example use cases
Identify note from microphone pitch
“I'm detecting a frequency of 523.25 hz from a microphone — what musical note is that, what's its MIDI number, and how many cents off is it from the true pitch?”
Tune instrument to alternate A4 reference
“My orchestra tunes to A4 = 415 hz. What note name, MIDI number, and wavelength corresponds to 415 hz using that as my A4 reference?”
Explore harmonics of a bass note
“What are the harmonics of MIDI note 36 (low C), and what are its neighboring notes and their frequencies?”
Technical details
Endpoint
GEThttps://saylorinnovations.com/api/music/pitch-note?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need detailed music theory metadata for a pitch — particularly when you need cents deviation, harmonics, wavelength, or MIDI conversion all in one call. Prefer it over standalone frequency-to-note converters when you need the full set of acoustic and music-theory properties simultaneously.
Side effects
- Missing all input parameters (hz, midi, note) — endpoint requires at least one pitch input
- Invalid MIDI number outside 0-127 range
- Malformed note string format (e.g. missing octave number)
- Frequency below 0 or outside audible/MIDI range may return unexpected results
- Invalid a4 or temp_c values may cause computation errors
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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