Klix Payment Gateway Integration

Integrate Klix (by Citadele) payment gateway into any web application or website. Klix supports card payments, Apple Pay, Google Pay, bank transfers (PIS) across the Baltics, and Pay Later installments.

Official docs: https://developers.klix.app/ Full API reference (OpenAPI): https://portal.klix.app/api/schema/v1/

Quick Start Checklist

Before integrating, confirm these with the user:

1. Credentials — Brand ID and Secret Key (from Klix merchant portal or test env)
2. Integration type — eCommerce plugin, widget library, or direct API?
3. Payment methods needed — cards, Apple Pay, Google Pay, bank PIS, Pay Later?
4. Payment scenarios — one-time, recurring, reservation/capture?

If unsure, start with the test environment to prototype.