SumUp

SumUp Checkouts API

Checkouts represent online payment sessions that you create before attempting to charge a payer. A checkout captures the payment intent, such as the amount, currency, merchant, and optional customer or redirect settings, and then moves through its lifecycle as you process it. Use this tag to: - create a checkout before collecting or confirming payment details - process the checkout with a card, saved card, wallet, or supported alternative payment method - retrieve or list checkouts to inspect their current state and associated payment attempts - deactivate a checkout that should no longer be used Typical workflow: - create a checkout with the order amount, currency, and merchant information - process the checkout through SumUp client tools such as the [Payment Widget and Swift Checkout SDK](https://developer.sumup.com/online-payments/checkouts) - retrieve the checkout or use the Transactions endpoints to inspect the resulting payment record Checkouts are used to initiate and orchestrate online payments. Transactions remain the authoritative record of the resulting payment outcome.

Documentation GitHub OpenAPI

Operations 7

GET /v0.1/merchants/{merchant_code}/payment-methods Get available payment methods #

POST /v0.1/checkouts Create a checkout #

GET /v0.1/checkouts List checkouts #

GET /v0.1/checkouts/{checkout_id} Retrieve a checkout #

PUT /v0.1/checkouts/{checkout_id} Process a checkout #

DELETE /v0.1/checkouts/{checkout_id} Deactivate a checkout #

PUT /v0.2/checkouts/{checkout_id}/apple-pay-session Create an Apple Pay session #

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OpenAPI Specification

openapi: 3.2.0
info:
  title: SumUp REST Checkouts API
  version: 1.0.0
  description: 'SumUp’s REST API operates with JSON HTTP requests and responses. The request bodies are sent through resource-oriented URLs and use the standard HTTP response codes.


    You can experiment and work on your integration in a sandbox that doesn''t affect your regular data and doesn''t process real transactions. To create a sandbox merchant account visit the dashboard. To use the sandbox when interacting with SumUp APIs create an API key and use it for authentication.'
  license:
    name: Apache 2.0
    url: https://www.apache.org/licenses/LICENSE-2.0.html
servers:
- url: https://api.sumup.com
  description: Production server
tags:
- name: Checkouts
  description: Checkouts represent online payment sessions that you create before attempting to charge a payer.
  x-core-objects:


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# Full source: https://raw.githubusercontent.com/api-evangelist/sumup/refs/heads/main/openapi/sumup-checkouts-api-openapi.yml