NineAuthDocs
GuidePayments & Subscriptions

Integrating CashinPay PIX Billing

Automate instant license key provisioning, renewals, and tier upgrades upon confirmed PIX payments through CashinPay webhooks.

PIX Subscription Lifecycle

NineAuth automates license expiration extension using the formula:

renewal-formula.ts
// Preserves remaining trial/subscription days + 30 days:
const newExpiry = Math.max(currentPeriodEnd.getTime(), Date.now()) + (30 * 24 * 60 * 60 * 1000);

Handling Expired Transactions

CashinPay PIX QR codes older than 30 minutes are automatically flagged as expired in NineAuth to prevent blocking fresh checkout sessions.

Concept: Licenses & Lifecycle →
Read how license seat quotas and automated reset quotas operate.
Management: Billing API →
Inspect endpoints for invoices, plans, and CashinPay transactions.