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Test your integration

  • Create test API keys.
  • Configure and enable every test payment method you plan to offer.
  • Create a test Payment Intent and mount Checkout using matching test keys.
  • Test succeeded, processing, and requires_payment_method outcomes.
  • Configure a test webhook endpoint and send a dashboard test event.
  • Confirm signature verification, event-id deduplication, and fulfilment logic.
  • Check the payment and webhook delivery in Lynq Dashboard.
Every resource must use the same environment: secret key, publishable key, Payment Intent, payment-method connection, and webhook endpoint. Also test your browser lifecycle: destroy Checkout on navigation, create a fresh instance for a new Payment Intent, and construct Checkout after hydration in SSR applications.
Last modified on August 7, 2026

Related topics

QuickstartVerify webhooksPayment IntentsCheckout SDKCheckout events and errors