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Full detail: Where this data comes from
Cashflows is a United Kingdom payment gateway and card acquirer, headquartered in London and a principal member of Visa and Mastercard, that helps businesses accept, process, and manage card payments across online, in-app, and in-person channels. It ships a genuine self-serve developer portal at developer.cashflows.com with reference documentation, a dedicated integration/sandbox environment, and webhook-based payment notifications. Its API reference is hand-authored HTML — there is no downloadable OpenAPI/Swagger definition or public Postman collection. Authentication is header-based (ConfigurationId plus a SHA-512 request hash for the Gateway; auth_id/auth_pass for Remote Authentication).
APIs.json: https://raw.githubusercontent.com/api-evangelist/cashflows/refs/heads/main/apis.yml
- Payments
- United Kingdom
- Payment Gateway
- Payment Processing
- Acquiring
- Card Payments
- In-Person Payments
- 3-D Secure
- Recurring Payments
- Webhooks
- Created: 2026-07-24
- Modified: 2026-07-24
REST API for creating and managing payment jobs and payments — create, retrieve, and cancel payment jobs; capture, refund, and cancel individual payments; card tokenisation; and recurring payments. Payment status changes are delivered asynchronously via webhook notifications (retried for up to a month).
- Human URL: https://developer.cashflows.com/api_reference/cashflows_gateway.html
- Base URL:
https://gateway.cashflows.com/api/gateway
REST/JSON API for cardholder-not-present card payments with 3-D Secure support — authorisation, capture, void, refund, credit, IIN lookup, and 3-D Secure version 2 authentication and verification flows.
API for connecting directly to the Cashflows acquiring network to authorise card transactions, authenticated with auth_id and auth_pass credential headers.
- Human URL: https://developer.cashflows.com/api_reference/remote_auth_api.html
- Base URL:
https://secure.cashflows.com/gateway/remote_auth
Standalone REST API for PCI-PTS secure Kinetic payment devices, served locally from the terminal (default http://127.0.0.1:8080) under /api/v2 — device info, ping/status, settings, transactions, screens, receipts, and printing.
- Human URL: https://developer.cashflows.com/api_reference/ipp.html
- Base URL:
http://127.0.0.1:8080/api/v2
- Website
- Developer Portal
- Documentation
- API Reference
- Getting Started
- Status Page
- Pricing
- Blog
- Support
- Terms of Service
- Privacy Policy
FN: Kin Lane Email: kin@apievangelist.com