Get Masterpass REST Installment Selection Page context

Returns the available installment options for the Masterpass REST flow. Installments are derived from the card identified in the previous step (MasterpassRestBinNumberPage) and filtered by the INSTALLMENT_FILTERS rules through InstallmentService.

Preconditions:

• Basket must not be empty

• Card information must have been entered (pre_order.card_info must be set, i.e., MasterpassRestBinNumberPage must have been completed)

Page Context:

• installments: List of available installment options for the resolved card. Each entry contains pk, installment_count, label, price_with_accrued_interest, and monthly_price_with_accrued_interest calculated against the current unpaid basket amount.

• card_type: Card type details (name, slug, logo), derived from pre_order.card_info.card.card_type.

• installment_messages: List of informational strings returned by InstallmentService (e.g., filter messages or promotion notices).

Skip Conditions:

• This page is considered already completed (is_already_done) when pre_order.installment is set and the active payment option is Masterpass REST.

available_for_post_order: true

get

Header parameters

x-requested-withstring · enumRequired

Required header for AJAX requests. Must be set to XMLHttpRequest for all checkout requests.

Default: XMLHttpRequestPossible values:

CookiestringOptional

Session cookie header (e.g. sessionid=abc123 or osessionid=<session_id>)

Responses

200

Masterpass REST installment selection page context retrieved

application/json

errorsone of · nullableOptional

or

string[]Optional

template_namestringOptional

get/orders/checkout/?page=MasterpassRestInstallmentPage

GET /orders/checkout/?page=MasterpassRestInstallmentPage HTTP/1.1
Host: sandbox.akinon.com
x-requested-with: XMLHttpRequest
Accept: */*

200

Masterpass REST installment selection page context retrieved

{
  "context_list": [
    {
      "page_name": "MasterpassRestInstallmentPage",
      "page_slug": "masterpassrestinstallmentpage",
      "page_context": {
        "installments": [
          {
            "pk": 1,
            "installment_count": 1,
            "label": "Single Payment",
            "price_with_accrued_interest": "159.99",
            "monthly_price_with_accrued_interest": "159.99"
          },
          {
            "pk": 2,
            "installment_count": 3,
            "label": "3 Installments",
            "price_with_accrued_interest": "165.59",
            "monthly_price_with_accrued_interest": "55.20"
          }
        ],
        "card_type": {
          "name": "Master",
          "slug": "master",
          "logo": "https://cdn.akinon.com/logos/master.png"
        },
        "installment_messages": []
      }
    }
  ],
  "pre_order": {
    "payment_option": {
      "pk": 7,
      "slug": "masterpass-rest",
      "payment_type": "masterpass_rest"
    },
    "card_info": {
      "bin_number": "542119",
      "card": {
        "pk": 1,
        "name": "Master"
      }
    },
    "installment": null
  },
  "errors": [],
  "template_name": "orders/checkout.html"
}