Playbooks

Guides for operators, engineers, and compliance

Every article captures a key PayCA programme flow — from master-account funding and fee settlement to webhook retries.

All guides

Bookmark the guides relevant to your team, or submit a pull request with edits when behaviours change.

How to refresh the in-memory BIN fee cache on workers without a restart.

Understand headers, idempotency keys, pagination, and error handling conventions for every PayCA endpoint.

Enable wallet-ready BINs, start tokenization, and process webhook OTP payloads for wallet attachment.

Track fees surfaced through PayCA APIs and webhooks so finance teams can reconcile revenue accurately.

Spin up credentials, configure environments, and make your first PayCA API calls in less than an hour.

Coordinate engineering, finance, and support for a smooth transition from sandbox to production.

A client-facing map of how money moves across cards, master accounts, and fee entries.

Operate card liquidity from master accounts and reconcile every balance movement with webhook evidence.

Understand the core objects exposed through the PayCA API for master-account integrations.

Use PayCA sandbox to simulate card spend, fees, and webhook retries before production launch.

Exact webhook types, payload fields, and expected balance impact on master accounts and cards.

Verify signatures, store payloads idempotently, and replay missed deliveries with confidence.

Ежемесячные комиссии (Monthly Fees) — руководство для поддержки Общее описание Для карт...