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SumUp Developer

Getting started

Start integrating SumUp quickly by creating a sandbox account, choosing your integration path, and processing your first payment.

Welcome to the SumUp Developer Portal. Here you’ll find everything you need to integrate SumUp’s payment solutions into your product. The documentation is divided into several sections:

  • Quick start – set up a sandbox merchant account and run through a first payment in minutes.
  • Online Payments – accept card payments on the web or in mobile apps.
  • Terminal Payments – use SumUp card readers to take in-person payments.
  • Developer Resources – explore authentication, webhooks, LLM tooling, and other utilities.

Create a sandbox merchant account to experiment safely and then dive into the section that best fits your use case.