Testing & Sandbox

Test Mode

All API calls made with sk_test_ keys operate in sandbox mode. No real charges are made, no real funds move, and test data is isolated from production.

Test Card Numbers

Use any future expiry date (e.g., 12/27) and any 3-digit CVC. Hosted pay (`/pay/:id`) and sandbox charges accept these numbers only. Never use a real card. PAN is not stored.

Test Bank Accounts (ACH)

Use any valid account number (e.g., 000123456789).

Test Webhooks

Clock Testing

Use the test clock API to simulate time-based events like subscription renewals and invoice due dates without waiting:

// Advance test clock by 30 days
await apt.testClock.advance({
  frozen_time: '2026-04-14T00:00:00Z',
});
// All subscriptions and invoices advance accordingly