Prerequisites

Enable Klarna payment messaging on your online store with Klarna's Mobile SDK and boost transparency and conversion. This includes our pre-qualification feature, which allows customers to check their eligibility for Klarna financing before completing a payment request. This reduces friction and increases confidence, as customers know their options upfront.

4 min read


Messaging on the homepage	Messaging on the product detail page	Messaging in the checkout

Before you integrate On-site messaging, please check that you meet the following conditions:

1.
Ensure that you have Klarna enabled.
2.
Confirm you have access to the Klarna Portal.
3.
Inside Klarna Portal:
1. 3.1.
  Confirm that you have generated a client identifier with your domain URL allowlisted.
2. 3.2.
  Confirm that you have generated an API key.

Integration overview

Adding On-Site Messaging to your native app is a straightforward process. At a high level, to achieve this tailored experience for your users, you will need to follow these steps:

Request access to On-Site Messaging.
Add the Mobile SDK Messaging library.
Initialize the Klarna SDK.
Create the native messaging view and add it to your screen.

sequenceDiagram participant C as Customer participant P as Partner participant K as Klarna participant AP as Acquiring Partner P->>K: Initialize Klarna SDK P->>K: Get OSM placement K->>P: Return messaging/prequalification content P->>C: Display messaging/prequalification content alt Prequalification flow - Approved C->>P: Clicks to check purchase power P->>K: Create session ID & request interoperability token K->>P: Return session ID & interoperability token K->>C: Start prequalification journey C->>K: Completes prequalification K->>P: Send approval event & updated messaging K->>C: Update placement to show approval alt Partner builds checkout form K->>P: Prequalification state preserved else Checkout form via Acquiring Partner P->>K: Fetch interoperability token P->>AP: Share interoperability token end end

Add Mobile SDK Messaging Library

First, add the Klarna Mobile SDK Maven repository:

KOTLIN

1 2 3 4

repositories {
    maven("https://x.klarnacdn.net/mobile-sdk/")
}

Next, add the Klarna Mobile SDK Messaging Library as a dependency to your application:

KOTLIN

1 2 3 4

dependencies {
    implementation("com.klarna.mobile.sdk:klarna-network-messaging:2.x.x")
}

Initialize the Klarna SDK

The first step to add On-Site Messaging to your application is to initialize the Klarna SDK and provide the required configuration:

KOTLIN

1 2 3 4 5 6 7 8 9 10

import com.klarna.mobile.sdk.klarna.network.core.api.klarna.KlarnaConfiguration
import com.klarna.mobile.sdk.klarna.network.core.api.klarna.Klarna

// Create an instance of KlarnaConfiguration
val configuration = KlarnaConfiguration(
    clientId = clientId,
    accountId = accountId,
    locale = locale,
    sdkToken = sdkToken,
)

Parameters

KlarnaConfiguration

Parameter	Type	Required	Description
clientId	String	Yes	The client ID of the partner account that is integrating the Mobile SDK. If the integration is done by a PSP/DP then this must be set to the distribution partners own client ID.
accountId	String	No	When transacting on-behalf of another account then the partner account ID is specified using the accountId property.
locale	String	No	Set the default locale(ISO 3166-1 alpha-2) for the SDK. System default locale will be used if not set.

Create the Native View

The On-Site Messaging native view on Android is the KlarnaMessagingPlacementView. You can create this view programmatically and add it to your layout with your desired layout options.

KOTLIN

1 2 3 4 5 6 7 8 9 10

import com.klarna.mobile.sdk.api.KlarnaTheme
import com.klarna.mobile.sdk.klarna.network.core.api.klarna.Klarna
import com.klarna.mobile.sdk.klarna.network.messaging.api.KlarnaMessagingPlacementConfiguration
import com.klarna.mobile.sdk.klarna.network.messaging.api.KlarnaMessagingPlacementView
// Create an instance of KlarnaMessagingPlacementConfiguration
// Depending on your requirements, you can create `CreditPromotionBadge` or 
// `CreditPromotionAutoSize` configuration
val placementConfiguration = KlarnaMessagingPlacementConfiguration.CreditPromotionBadge(
    theme = KlarnaTheme.AUTOMATIC,
    amount = 10000L,

Parameters

CreditPromotionBadge

Parameter	Type	Description
theme	KlarnaTheme	(Optional) Enumerated theme value to specify how to stylize the view on light, dark or automatic (system) configurations. Default value is LIGHT.
amount	Long	Amount for the placement. Set in micro units ($120.00 = 12000), used for amount based credit promotions.
currency	String	3-letter ISO 4217 currency code

CreditPromotionAutoSize

Parameter	Type	Description
theme	KlarnaTheme	(Optional) Enumerated theme value to specify how to stylize the view on light, dark or automatic (system) configurations.
amount	Long	Amount for the placement. Set in micro units ($120.00 = 12000), used for amount based credit promotions.
currency	String	3-letter ISO 4217 currency code

KlarnaTheme

Name	Descriptions
LIGHT	Light style for placement view.
DARK	Dark style for placement view.
AUTOMATIC	Automatic theme that will use the system’s user interface style.

Jump to section...