Interkassa payments: SCI form, Interaction URL, and status pages

open_in_new Interkassa is a payment aggregator with an SCI (Shop Cart Interface) checkout flow.

API documentation: open_in_new Interkassa API .

Overview

From an integration point of view, SCI is a web page (https://sci.interkassa.com) that accepts an HTTP request with GET or POST parameters.

Payment form:

<form name="payment" method="post" action="https://sci.interkassa.com/" accept-charset="UTF-8">
  <input type="hidden" name="ik_co_id" value="51237daa8f2a2d8413000000"/>
  <input type="hidden" name="ik_pm_no" value="ID_4233"/>
  <input type="hidden" name="ik_am" value="1.44"/>
  <input type="hidden" name="ik_cur" value="uah"/>
  <input type="hidden" name="ik_desc" value="Payment Description"/>
  <input type="submit" value="Pay">
</form>

open_in_new Full list of form parameters .

Return to the status page

You can set the return URL either via form parameters or in the cashbox (cashier) settings. I prefer configuring it in the cashbox settings.

Payment notification

When a payment is processed, SCI sends a request with the payment data to the Interaction URL. That request contains everything you need to complete the order on your site.