Documentation
Financial platform

Operate PayCA Cards: Secure Issuing & Spending Made Simple.

Explore the full OpenAPI surface, study fund, fee, and webhook flows, and ship compliant financial integrations without guesswork.

Production-ready reference

Every endpoint, parameter, and response shape. Optimized for auditors, engineers, and ops specialists.

Open API reference →

Operational playbooks

Understand how funds travel through master accounts, cards, and revenue wallets with real payloads and ledger entries.

Jump to guides →

Sandbox walkthroughs

Replay card lifecycles and webhook deliveries locally using the sandbox tooling that mirrors production.

Test webhooks →

Latest guides

Short, structured articles that explain how we move funds, recognise revenue, and reconcile webhook streams.