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Returns a single cardholder by their customerId.
Card endpoints use the same base URL and API key as the rest of the API and are not signature-gated.

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Endpoint

GET /api/v1/business/cardholders/{customerId}
Signature required: No

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Headers

HeaderRequiredDescription
X-Numero-Api-KeyYesYour API key

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Path parameters

ParameterTypeRequiredDescription
customerIdstringYesThe cardholder id

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Request example

curl -X GET "https://api-dev.usenumero.com/numeroaccount/api/v1/business/cardholders/NCUS9953596C2B7F45" \
  -H "X-Numero-Api-Key: your_api_key"

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Response

{
  "status": true,
  "message": "Successful",
  "code": "200",
  "version": "v1",
  "reference": "N20260616120000",
  "data": {
    "customerId": "NCUS9953596C2B7F45",
    "firstName": "Ada",
    "lastName": "Obi",
    "email": "[email protected]",
    "phone": "08012345678",
    "country": "NG",
    "status": "Active",
    "activeCardCount": 1,
    "createdAt": "2026-06-16T12:00:00Z"
  },
  "error": null
}