Frequencies, cents and ratios of the 12 notes in equal, 5-limit just, Pythagorea
Frequencies, cents and ratios of the 12 notes in equal, 5-limit just, Pythagorean or quarter-comma meantone tuning.
Answeringour last check, 2026-10-21
1 of 1checks answered this week
1989 msmedian answer time
$0.02listed price per call
$0.02price it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
GET https://audio-calc.x402tookit.com/tuning-temperament
| Category | Image and media |
|---|---|
| Provider host | audio-calc.x402tookit.com |
| Networks | eip155:137, eip155:42161, eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp |
| Payment schemes | exact |
| Self-reported calls, 30 days | 1 from 1 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-10-21 | valid payment request | 402 | $0.02 | 1989 ms |
Example input (from the provider)
{
"method": "GET",
"queryParams": {
"a4": 440,
"root": "C4",
"temperament": "just"
},
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"a4": {
"description": "Reference pitch for A4 in Hz (default 440); sets the root's frequency by equal temperament",
"type": "number"
},
"root": {
"description": "Root note with optional octave, for example C4 (default), D3, F#4, Bb2",
"type": "string"
},
"temperament": {
"description": "equal, just, pythagorean or meantone",
"enum": [
"equal",
"just",
"pythagorean",
"meantone"
],
"type": "string"
}
},
"required": [
"temperament"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"a4": {
"type": [
"null",
"number"
]
},
"asOf": {
"type": [
"null",
"string"
]
},
"degraded": {
"type": [
"boolean",
"null"
]
},
"description": {
"type": [
"null",
"string"
]
},
"disclaimer": {
"type": [
"null",
"string"
]
},
"fifthCents": {
"type": [
"null",
"number"
]
},
"majorThirdCents": {
"type": [
"null",
"number"
]
},
"maxDeviationFromEqualCents": {
"type": [
"null",
"number"
]
},
"minorThirdCents": {
"type": [
"null",
"number"
]
},
"notChecked": {
"items": {
"type": "string"
},
"type": [
"array",
"null"
]
},
"notes": {
"items": {
"properties": {
"cents": {
"type": [
"null",
"number"
]
},
"centsFromEqual": {
"type": [
"null",
"number"
]
},
"degree": {
"type": [
"null",
"number"
]
},
"equalTemperedHz": {
"type": [
"null",
"number"
]
},
"hz": {
"type": [
"null",
"number"
]
},
"note": {
"type": [
"null",
"string"
]
},
"ratio": {
"type": [
"null",
"number"
]
}
},
"type": "object"
},
"type": [
"array",
"null"
]
},
"reasons": {
"items": {
"type": "string"
},
"type": [
"array",
"null"
]
},
"root": {
"type": [
"null",
"string"
]
},
"rootHz": {
"type": [
"null",
"number"
]
},
"source": {
"type": [
"null",
"string"
]
},
"summary": {
"type": [
"null",
"string"
]
},
"temperament": {
"type": [
"null",
"string"
]
},
"verdict": {
"type": [
"null",
"string"
]
}
},
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}