Ingenico Direct offers SDKs that wrap the RESTful API and make it even easier to integrate with our platform. The SDK you need depends on your server-side technology stack and on the clients that you want to support. Find here our current SDK offering.
We also offer direct access to our RESTful API for integration to our platform if you don't want to use any of our proposed SDKs. The API consists of two main parts: server-to-server and client-to-server functionality.
If you use technologies that are not covered by our SDKs you can always use our APIs directly.