PayGate API Documentation

Language-agnostic integration reference for PayGate, a multi-tenant payment gateway (Stripe today, more providers later). If you're integrating in PHP or Node.js, see the PayGate PHP SDK or PayGate Node.js SDK — they implement everything described here.

• 01 — Getting started
• 02 — Authentication
• 03 — API reference
  • 03.01 — POST /api/v1/checkout-sessions
  • 03.02 — /api/v1/subscriptions/{external_ref} (get, set customer, change plan)
  • 03.03 — Hosted checkout picker page
  • 03.04 — Testing without a real Stripe account
  • 03.05 — GET /api/v1/transactions/{transaction_id}
  • 03.06 — /api/v1/customers
  • 03.07 — /api/v1/plans (plans and prices)
  • 03.08 — Subscription lifecycle
• 04 — Webhooks
  • 04.01 — Registering your webhook
• 05 — Errors
• 06 — Postman collection
• 07 — Understanding external_ref

Base URLs

Environment	Base URL
Production	https://payments.example.com
Dev/staging	https://payments-dev.example.com

Replace with the actual domain your gateway operator gave you when they registered your app.