Compute check digit

Code-Snippets

curl "https://api.oanor.com/isbn-api/v1/checkdigit" \
  -H "x-oanor-key: oanor_test_..."

await fetch("https://api.oanor.com/isbn-api/v1/checkdigit", {
  headers: { "x-oanor-key": "oanor_test_..." }
});

$ch = curl_init("https://api.oanor.com/isbn-api/v1/checkdigit");
curl_setopt($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/isbn-api/v1/checkdigit",
    headers={"x-oanor-key": "oanor_test_..."}
)

Beispiel-Response

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

{
    "data": {
        "note": "ISBN-10 check digit (X means 10).",
        "type": "ISBN-10",
        "inputs": {
            "stem": "030640615"
        },
        "full_isbn": "0306406152",
        "check_digit": "2"
    },
    "meta": {
        "timestamp": "2026-06-05T19:50:13.991Z",
        "request_id": "29bf195d-e8c8-48e5-8d34-acba0b52b6d6"
    },
    "status": "ok",
    "message": "Compute check digit",
    "success": true
}