---
title: "Referential WS Client"
account: worldline
slug: referential-ws-client
---

# Referential WS Client

Card operations: fetch, update credentials and echo-test card data via referential calls

- Operations: 3
- Versions: 1 (latest `21cb2439c982`)
- Source: https://financial-services.developer.worldline.com/sites/default/files/apidoc_specs/Referential_WS_Client_corrected.yaml
- OpenAPI document: https://skmtc.dev/worldline/apis/referential-ws-client/revisions/21cb2439c982?raw

## Operations

3 in total, by tag:

- echo (1)
- card (2)

Every operation, with a link to its markdown: https://skmtc.dev/worldline/apis/referential-ws-client/llms.txt