Production-ready reference
Every endpoint, parameter, and response shape. Optimized for auditors, engineers, and ops specialists.
Open API reference →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.
Operational playbooks
Understand how funds travel through mirror, card, and revenue accounts 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 keep users in sync.
Sandbox Playbook
Use PayCA’s sandbox to simulate card spend, fees, and webhook retries before you ship to production.
Getting Started With PayCA
Spin up credentials, configure environments, and make your first PayCA API calls in less than an hour.
Webhook Handling Patterns
Verify signatures, store payloads idempotently, and replay missed deliveries with confidence.
Programme Entities
Understand the objects exposed through the PayCA API so you can organise users, cards, balances, and event streams.
Moving Funds & Reconciliation
Move money between your tenant balance and user wallets, then confirm activity with API responses and webhooks.
Fees & Revenue Recognition
Track fees surfaced through PayCA APIs and webhooks so finance teams can reconcile revenue accurately.
API Authentication & Request Hygiene
Understand headers, idempotency keys, pagination, and error handling conventions for every PayCA endpoint.
Go-Live Runbook
Coordinate engineering, finance, and support for a smooth transition from sandbox to production.
User Lifecycle & Control Flows
End-to-end reference for creating users, managing their accounts and cards, and enforcing status-driven controls across PayCA APIs.
User Onboarding Checklist
Provision, fund, and monitor new users with predictable KYC, card issuance, and liquidity workflows.