Test Environment

Sandbox Environment

Test your GoPayNow integration safely without real money. Full API functionality with simulated payments and transfers.

Test Card Numbers

Use these test card numbers to simulate different payment scenarios

Successful Payment

Success
4242 4242 4242 4242
Expiry: Any future date
CVV: Any 3 digits

Declined Payment

Declined
4000 0000 0000 0002
Expiry: Any future date
CVV: Any 3 digits

3D Secure Required

3DS
4000 0027 6000 3184
Expiry: Any future date
CVV: Any 3 digits

Sandbox Features

Complete testing environment with all production features

Payment Links

Test hosted payment page functionality

Wallet Transfers

Simulate instant P2P transfers

Bank Transfers

Test IBAN-based payouts

Webhooks

Test real-time event notifications

Getting Started

Set up your sandbox environment in minutes

1

Get Sandbox Keys

Sign up for a free developer account and get your sandbox API keys instantly.

API_KEY = sk_test_your_sandbox_key_here
BASE_URL = https://sandbox-api.gopay.now
2

Make Test Requests

Use our test card numbers and simulate different payment scenarios.

curl -X POST \
  'https://sandbox-api.gopay.now/v1/payment-links' \
  -H 'Authorization: Bearer sk_test_...'
3

Test Webhooks

Receive webhook events in your test environment and verify your integration.

{
  "type": "payment_link.completed",
  "data": {
    "status": "paid"
  }
}

Ready to Start Testing?

Get your sandbox environment set up in minutes and start building your integration.