How do I integrate Klarna?

If you’re an administrator user in the Merchant portal, you’ll find platform-specific guides in the Products section. And you can always find more technical information on our Developers site or by contacting our Merchant support.

Integration testing

To test your integration, you’ll need Klarna API test credentials for our playground environment and test mode activated in your Klarna plug-in.

Once you request and get access to your test account, the next step is to log in to the playground/test version of the Merchant portal. There you’ll find your Klarna API test credentials by going to Settings > Klarna API Credentials.

Ok, I want to know more about the test environment.

Was this article helpful?

Yes, it was helpful

No, I still need help

Choose your language and region

Klarna is available around the world with a variable offering, choose one that suits you best.

Monthly financing through Klarna and One-time card bi-weekly payments with a service fee to shop anywhere in the Klarna App issued by WebBank. Other CA resident loans at select merchants made or arranged pursuant to a California Financing Law license. Copyright © 2005-2023 Klarna Inc. NMLS #1353190, 800 N. High Street Columbus, OH 43215.