Zum Inhalt springen
GET /v1/meta

Totals & CODATA adjustment

Live testen

10 freie Calls pro Tag — keine Anmeldung, kein API-Key. Geht durchs oanor-Gateway.

Eigene Header (optional)
api.oanor.com/constants-api

Funktioniert. Hol dir einen API-Key und nutze sie in deinem Projekt.

API-Key holen

Code-Snippets

curl "https://api.oanor.com/constants-api/v1/meta" \
  -H "x-oanor-key: oanor_test_..."
await fetch("https://api.oanor.com/constants-api/v1/meta", {
  headers: { "x-oanor-key": "oanor_test_..." }
});
$ch = curl_init("https://api.oanor.com/constants-api/v1/meta");
curl_setopt($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/constants-api/v1/meta",
    headers={"x-oanor-key": "oanor_test_..."}
)

Beispiel-Response

Echte Antwort dieses Endpoints, erfasst beim letzten Health-Check.

{
    "data": {
        "note": "value is the recommended numeric value; uncertainty is the standard uncertainty (0 when exact).",
        "exact": 81,
        "total": 355,
        "fields": [
            "name",
            "slug",
            "value",
            "value_str",
            "uncertainty",
            "exact",
            "unit"
        ],
        "source": "NIST — CODATA 2022 fundamental physical constants",
        "adjustment": "2022 CODATA"
    },
    "meta": {
        "timestamp": "2026-05-31T05:48:04.141Z",
        "request_id": "84a5fe00-aa54-4216-af98-7f0200d5826e"
    },
    "status": "ok",
    "message": "Meta retrieved",
    "success": true
}