# SumUp Transactions API

**Canonical:** https://apis.io/apis/sumup/sumup-transactions-api/  
**Provider:** SumUp — https://apis.io/providers/sumup/  
**Base URL:** https://api.sumup.com  
**Documentation:** https://developer.sumup.com/api

SumUp Transactions API is one of 10 APIs that [SumUp](https://apis.io/providers/sumup/) publishes on the [APIs.io](https://apis.io/) network, described by a machine-readable OpenAPI specification. Tagged areas include Transaction. The published artifact set on APIs.io includes an OpenAPI specification and API documentation.

Transactions represent completed or attempted payment operations processed for a merchant account. A transaction contains the core payment result, such as the amount, currency, payment method, creation time, and current high-level status. In addition to the main payment outcome, a transaction can contain related events that describe what happened after the original payment attempt. These events provide visibility into the financial lifecycle of the transaction, for example: - `PAYOUT`: the payment being prepared for payout or included in a payout to the merchant - `REFUND`: money returned to the payer - `CHARGE_BACK`: money reversed after the original payment - `PAYOUT_DEDUCTION`: an amount deducted from a payout to cover a refund or chargeback From an integrator's perspective, transactions are the authoritative record of payment outcomes. Use this tag to: - list transactions for reporting, reconciliation, and customer support workflows - retrieve a single transaction when you need the latest payment details - inspect `simple_status` for the current merchant-facing outcome of the payment - inspect `events` or `transaction_events` when you need refund, payout, or chargeback history Typical workflow: - create and process payments through the Checkouts endpoints - use the Transactions endpoints to read the resulting payment records - use the returned statuses and events to update your own order, accounting, or support systems

## Machine-readable artifacts (3)

- **OpenAPI** — https://raw.githubusercontent.com/api-evangelist/sumup/refs/heads/main/openapi/sumup-transactions-api-openapi.yml
- **Documentation** — https://developer.sumup.com/api
- **PostmanCollection** — https://www.postman.com/sumupengineering/sumup-developers/collection/iqa7nry/sumup-rest-api

## Other SumUp APIs (9)

- [SumUp Checkouts API](https://apis.io/apis/sumup/sumup-checkouts-api/)
- [SumUp Customers API](https://apis.io/apis/sumup/sumup-customers-api/)
- [SumUp Members API](https://apis.io/apis/sumup/sumup-members-api/)
- [SumUp Memberships API](https://apis.io/apis/sumup/sumup-memberships-api/)
- [SumUp Merchants API](https://apis.io/apis/sumup/sumup-merchants-api/)
- [SumUp Payouts API](https://apis.io/apis/sumup/sumup-payouts-api/)
- [SumUp Readers API](https://apis.io/apis/sumup/sumup-readers-api/)
- [SumUp Receipts API](https://apis.io/apis/sumup/sumup-receipts-api/)
- [SumUp Roles API](https://apis.io/apis/sumup/sumup-roles-api/)

## Tags

Transaction

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/sumup/sumup-transactions-api/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/sumup/.