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GET /v1/scale

Scale notes

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10 free calls per day — no sign-up, no API key. Goes through the oanor gateway.

Custom headers (optional)
api.oanor.com/musictheory-api

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Code snippets

curl "https://api.oanor.com/musictheory-api/v1/scale" \
  -H "x-oanor-key: oanor_test_..."
await fetch("https://api.oanor.com/musictheory-api/v1/scale", {
  headers: { "x-oanor-key": "oanor_test_..." }
});
$ch = curl_init("https://api.oanor.com/musictheory-api/v1/scale");
curl_setopt($ch, CURLOPT_HTTPHEADER, ["x-oanor-key: oanor_test_..."]);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$out = curl_exec($ch);
import requests
requests.get(
    "https://api.oanor.com/musictheory-api/v1/scale",
    headers={"x-oanor-key": "oanor_test_..."}
)

Example response

A real response from this endpoint, captured by the latest health check.

{
    "data": {
        "note": "Scale notes as semitone offsets from the tonic. C major = C D E F G A B; A natural-minor = A B C D E F G.",
        "notes": [
            "C",
            "D",
            "E",
            "F",
            "G",
            "A",
            "B"
        ],
        "inputs": {
            "mode": "major",
            "root": "C"
        },
        "degrees": [
            0,
            2,
            4,
            5,
            7,
            9,
            11
        ],
        "notes_string": "C D E F G A B"
    },
    "meta": {
        "timestamp": "2026-06-05T19:50:12.039Z",
        "request_id": "36ba9312-5648-4f59-a39b-6b80b217b8f0"
    },
    "status": "ok",
    "message": "Scale",
    "success": true
}