The public key provided to you by Credit Key. This varies between staging and production environments.

The shared secret provided to you by Credit Key. This varies between staging and production environments.

A unique identifier for this checkout session

A unique identifier for this user

The URL which Credit Key should redirect the customer web browser to upon successfully completing the checkout flow. %CKKEY% will be replaced by the unique ID for the order, and should be saved to your local database. See the "Return to Merchant after Credit Key Checkout" section of the Credit Key Implementation Guide for details.

The URL to return the user's web browser to if the user does not complete Credit Key checkout. Frequently, this will be the URL of your checkout page.

Optional. The Order Complete URL will be a URL on your system that Credit Key will use for pended applications. Orders can be administratively approved (in the event that the return_url is not applicable) for cleared applications. The order_complete_url should be set up specially for Credit Key to submit orders independently of the borrowers client state.

The checkout mode; 'modal' for modal checkout, otherwise 'redirect'.