---
title: "Worldline (@worldline)"
description: "Payment service provider for businesses in Europe."
account: "worldline"
---

# Worldline

Payment service provider for businesses in Europe.

## APIs

3 public APIs with a stored document.
Each links to its markdown overview; the same address with
`/llms.txt` in place of `.md` lists its operations.
Changes across these APIs: https://skmtc.dev/worldline/feed.md

- [Merchant payments - Transactions API](https://skmtc.dev/worldline/apis/merchant-payments-transactions-api.md): Merchant acquiring: look up card transactions and authorizations by merchant, site, terminal or payment
- [Authentication WS Client](https://skmtc.dev/worldline/apis/authentication-ws-client.md): Banking: initiate, validate, update and cancel customer authentication sessions
- [Referential WS Client](https://skmtc.dev/worldline/apis/referential-ws-client.md): Card operations: fetch, update credentials and echo-test card data via referential calls