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Klarna Checkout API

The Checkout API from Klarna — 3 operation(s) for checkout.

Klarna Checkout API is one of 21 APIs that Klarna publishes on the APIs.io network, described by a machine-readable OpenAPI specification.

Tagged areas include Checkout. The published artifact set on APIs.io includes an OpenAPI specification.

This API exposes 4 operations across 3 paths, and defines 24 schemas. It is described by OpenAPI 3.0.0, at version 1.1.

Requests are made against a single base URL, https://api.klarna.com.

4 operations 3 paths 24 schemas 1 GET3 POST

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 3.0.0
API Version
1.1
Base URL
https://api.klarna.com
License
Klarna Bank AB
Resource Areas
1

Paths & Operations 4

Across 3 paths, the API surfaces 4 operations — 1 GET, 3 POST. Each is listed below with its method, path, parameters, and response codes.

Checkout 4
POST
/checkout/v3/orders
Create an order
createOrderMerchant 1 param body → 201400401
POST
/checkout/v3/orders/{order_id}
Update an order
updateOrderMerchant 1 param body → 200400401403404
GET
/checkout/v3/orders/{order_id}
Get order details
readOrderMerchant 1 param → 200401403404
POST
/checkout/v3/orders/{order_id}/abort
Abort an order
abortOrder 1 param → 200403404

Schemas 24

The contract defines 24 schemas that model the data the API accepts and returns. The most detailed are order (35 properties), options (26 properties), order_line (16 properties), address (15 properties). Each schema is shown below with its type and property counts.

checkbox-v2
object
4 properties 4 required
attachment
object
2 properties 2 required
shipping_option
object
12 properties 5 required
product_identifiers
object
6 properties
TimeslotV1
object
3 properties
checkbox
object
3 properties 3 required
merchant_urls
object
10 properties 4 required
subscription
object
3 properties 2 required
discount_line
object
8 properties 6 required
merchant_requested_checkbox
object
2 properties
PickupLocationV1
object
3 properties
dimensions
object
3 properties
options
object
26 properties
shipping_attributes
object
3 properties
merchant_requested
object
2 properties
order
object
35 properties 6 required
ProductV1
object
2 properties
gui
object
1 property
order_line
object
16 properties 6 required
payment_provider
object
7 properties 2 required
address
object
15 properties
customer
object
5 properties
selected_addon
object
4 properties
DeliveryDetailsV1
object
5 properties

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

klarna-checkout-api-openapi.yml Raw ↑

Other APIs Klarna publishes across the network.

Klarna Payments API
Klarna Order Management API
Klarna Customer Token API
Klarna Settlements API
Klarna Push Notifications
Klarna Captures API
Klarna Customer Token API
Klarna Hpp API
Klarna Merchant Urls.address Update API
Klarna Merchant Urls.country Change API
Klarna Merchant Urls.shipping Option Update API
Klarna Merchant Urls.validation API