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GET /v1/meta

Totals & standard

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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/mcc-api

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Code snippets

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

Example response

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

{
    "data": {
        "note": "MCCs are 4-digit codes assigned by card networks (Visa/Mastercard) to classify a merchant's business type.",
        "total": 981,
        "fields": [
            "mcc",
            "description",
            "combined_description",
            "usda_description",
            "irs_description",
            "irs_reportable"
        ],
        "source": "Merchant Category Codes (greggles/mcc-codes, ISO 18245)",
        "standard": "ISO 18245",
        "irs_reportable": 810
    },
    "meta": {
        "timestamp": "2026-05-31T05:48:03.525Z",
        "request_id": "80bbcc1c-2adb-49fa-b414-54c3ea9ec2ee"
    },
    "status": "ok",
    "message": "Meta retrieved",
    "success": true
}