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SumUp Developer Portal

Docs, guides, and resources to help you accept payments with SumUp.

Accept Online Payments

Accept Your First Online Payment

Create and verify a checkout with a sandbox merchant account.

Choose a Checkout Experience

Compare hosted, embedded, web, and mobile checkout options.

Offer More Payment Methods

Discover the methods available to a merchant and checkout.

Test Your Integration

Exercise successful, failed, and 3D Secure payment flows.

Accept In-Person Payments

Choose an In-Person Integration

Compare mobile SDKs, the Cloud API, and legacy app handoff.

Accept Your First In-Person Payment

Prepare a merchant account, device, and integration for testing.

Build a Native Mobile Flow

Accept payments in Android and iOS apps with SumUp SDKs.

Connect a Standalone Reader

Control a supported reader from a server or any platform.

Build and Operate

Set Up Authorization

Choose and protect the credentials for your integration.

Call APIs with a Server SDK

Use an official client across online and in-person integrations.

Use the API Reference

Look up endpoints, request fields, responses, and errors.

Build with AI

Give coding assistants current SumUp documentation and tools.

Our Anti-fraud Protection

Were committed to protecting you from fraud, chargebacks and headaches

We use advanced artificial intelligence to constantly monitor transactions for unusual activity

All of our anti-fraud protection is included at no additional cost

Brands That Build With SumUp

Go to SumUp Dashboard.
Need help? Contact Support.
Check out our Changelog.
LLM? Checkout llms.txt.
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