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What are Klarna API Credentials?

Klarna API credentials are used to authenticate the API calls your system sends to us. API calls are how your system and Klarna’s system communicate. By authenticating the calls, we can ensure that the requests are legitimate. In this way, you protect your business and we keep our services secure.

API credentials come in the form of a randomly-generated “username” and “password.” You will create and use a set of these credentials during the integration process, and they will only be used for integration and troubleshooting. These will not be your login credentials for the Klarna Merchant Portal – that will be your registered email address, and a password you choose.

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Copyright © 2005-2023 Klarna Bank AB (publ). Klarna Bank AB (publ) is authorised and regulated by the Swedish Financial Supervisory Authority. Deemed authorised by the Prudential Regulation Authority. Subject to regulation by the Financial Conduct Authority and limited regulation by the Prudential Regulation Authority. Details of the Temporary Permissions Regime, which allows EEA-based firms to operate in the UK for a limited period while seeking full authorisation, are available on the Financial Conduct Authority’s website. Klarna Bank AB offers both regulated and unregulated products. Klarna’s Pay in 3 instalments and Pay in 30 days agreements are not regulated by the FCA. Klarna Bank AB (publ) registered and head office: Sveavägen 46, 111 34 Stockholm, Sweden. A Swedish public limited company (publikt bankaktiebolag) registered with the Swedish Companies Registration Office with organisation number: 556737-0431.