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GET /v1/crc32

CRC-32 checksum

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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/checksum-api

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

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Code snippets

curl "https://api.oanor.com/checksum-api/v1/crc32" \
  -H "x-oanor-key: oanor_test_..."
await fetch("https://api.oanor.com/checksum-api/v1/crc32", {
  headers: { "x-oanor-key": "oanor_test_..." }
});
$ch = curl_init("https://api.oanor.com/checksum-api/v1/crc32");
curl_setopt($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/checksum-api/v1/crc32",
    headers={"x-oanor-key": "oanor_test_..."}
)

Example response

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

{
    "data": {
        "hex": "3610a686",
        "signed": 907060870,
        "unsigned": 907060870,
        "algorithm": "crc32"
    },
    "meta": {
        "timestamp": "2026-06-03T01:09:49.007Z",
        "request_id": "4f2b0a1d-c549-4e6c-8d98-dc6168a2130e"
    },
    "status": "ok",
    "message": "CRC-32 checksum",
    "success": true
}