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SumUp Developer

Authorization

Select the appropriate authorization method for your integration.

SumUp provides a REST API to manage checkouts, retrieve transactions, and perform other operations programmatically. Authorize your application before making requests. For card-present integrations, you also need to provide an Affiliate Key.​

Key topics in this section:

  • Authorization – explains how to use API Keys or OAuth 2.0 access tokens.
  • Affiliate Keys – learn why affiliate keys are required and how to generate one.

Once you are familiar with these concepts, you can explore the detailed API reference.