$ agent-cards-admin cardholders create
? API key: sk_test_a1b2c3d4e5f6...
? First name: Alice
? Last name: Smith
? Date of birth (YYYY-MM-DD): 1990-01-15
? Email (optional): alice@example.com
? Phone number (optional):
✓ Cardholder created
ID ch_abc123
Name Alice Smith
Email alice@example.com
DOB 1990-01-15T00:00:00.000Z
Stripe ID ich_1abc123
Created 3/10/2026, 12:00:00 PM