curl -X POST https://api.agentcard.sh/api/v1/cardholders \ -H "Authorization: Bearer sk_test_..." \ -H "Content-Type: application/json" \ -d '{"firstName": "Alice", "lastName": "Smith", "dateOfBirth": "1990-01-15", "email": "alice@example.com"}'
{ "id": "ch_abc123", "firstName": "Alice", "lastName": "Smith", "email": "alice@example.com", "dateOfBirth": "1990-01-15T00:00:00.000Z", "phoneNumber": null, "stripeCardholderId": "ich_1abc123", "createdAt": "2026-03-10T12:00:00.000Z", "updatedAt": "2026-03-10T12:00:00.000Z" }
Create a new cardholder in your organization
YYYY-MM-DD
"1990-01-15"