/v1/bar
Bar / measure duration
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10 free calls per day — no sign-up, no API key. Goes through the oanor gateway.
It works. Grab an API key and use it in your project.
Get an API keyCode snippets
curl "https://api.oanor.com/tempo-api/v1/bar" \ -H "x-oanor-key: oanor_test_..."
await fetch("https://api.oanor.com/tempo-api/v1/bar", {
headers: { "x-oanor-key": "oanor_test_..." }
});
$ch = curl_init("https://api.oanor.com/tempo-api/v1/bar");
curl_setopt($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/tempo-api/v1/bar",
headers={"x-oanor-key": "oanor_test_..."}
)
Example response
A real response from this endpoint, captured by the latest health check.
{
"data": {
"bpm": 120,
"bar_ms": 2000,
"beat_ms": 500,
"beat_note": "1/4",
"beats_per_bar": 4,
"time_signature": "4/4",
"bars_per_minute": 30,
"bars_per_second": 0.5
},
"meta": {
"timestamp": "2026-06-03T17:42:07.199Z",
"request_id": "219777d8-4532-46d6-b6de-dd7080e96ff0"
},
"status": "ok",
"message": "Bar duration",
"success": true
}