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GET /v1/generate

Generate a check digit

Try it live

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

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

It works. Grab an API key and use it in your project.

Get an API key

Code snippets

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

Example response

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

{
    "data": {
        "number": "7992739871",
        "algorithm": "luhn",
        "check_digit": "3",
        "full_number": "79927398713"
    },
    "meta": {
        "timestamp": "2026-06-03T01:09:43.096Z",
        "request_id": "3725976f-8725-493f-97d0-5d71a385516e"
    },
    "status": "ok",
    "message": "Generate a check digit",
    "success": true
}