Web Payments SDK

Enter an amount, fill in the card details, and submit to create a real payment through the Square Sandbox API.

Sandbox mode. Use test card number 4111 1111 1111 1111, any future expiry date, and any 3-digit CVV. Real cards will not be charged.

{{-- ── Payment form ─────────────────────────────────────────────── --}}

{{-- ── Result panel (hidden until a payment attempt completes) ───── --}}