Integration & documentation

Billie Developer Portal

Developer Page Staging

In our developer portal, you will find documentation and information around our various ways to integrate Billie into your online store.

Developer Page Staging

Documentation

Integration Types

Direct Integration

DeveloperPage DirectIntegration S

Direct Integration

Would you like to start a direct integration? Find our Billie PHP, SDK, and API documentation here.

Plugin Integration

Plug in with Billie

Plugin Integration

Are you using a standardized store system? We provide plugins for the most common shop systems.

Billie via Klarna-Integration

High acceptance rates with Billie

Billie via Klarna-Integration

Billie and Klarna have an exclusive partnership. Merchants who have already implemented Klarna Payments or Klarna Checkout in their online store can add Billie via their existing integration.

Not What You Are Looking for? See More Resources in Our Billie Docs.