Basics

Learn about the Unzer API, URLs, authentication, test environment, error codes, notifications, and more.

About the Unzer API

The Unzer API connects your business to the Unzer payment infrastructure.

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Authentication

Authenticate your requests to the Unzer API.

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Error handling

Learn how to handle basic Unzer API errors.

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Notifications

Receive notifications about any changes related to your payments.

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Security

Keep your payments secure.

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