F
Fiavex Pay
Integrations

Choose the integration path that matches your store.

This platform supports WooCommerce, custom API integration, hosted checkout, and payment links. Nothing else is required to go live.

WooCommerce Plugin

Install the WooCommerce plugin, enter your merchant API key, and connect your callback and webhook URLs from your merchant dashboard.

Custom API

Create checkout sessions from your backend through `POST /gateway/session.php`, then redirect buyers to `checkout_url`.

Hosted Checkout

Great for starter packages. Use gateway-hosted checkout to launch fast and finalize order status on webhook events.

Payment Links

Send payment links directly to buyers for invoices or manual collections while keeping callback and webhook logic consistent.

Go-live checklist

  • Confirm approved domain in merchant dashboard.
  • Set callback URL and webhook URL after signup.
  • Use server-side session creation and redirect to `checkout_url`.
  • Verify webhook signatures with merchant webhook secret.
  • Mark orders paid only after webhook confirmation.

Make the first merchant interaction feel professional.

That means cleaner signup, clearer setup, better docs, and a dashboard merchants can trust enough to actually finish onboarding.