API Reference
Overview
Quick Start
API Authentication
API Error Codes
APIs
Checkout API
Checkout API
Order Details
User History
Prices
Product API
Product API
Coupons
Products
Licenses
Pay Links
Transactions
Payments
Subscription API
Subscription API
Plans
Users
Modifiers
Payments
One-off Charges
Alert API
Alert API
Webhooks

API Authentication

All Paddle API calls (except the checkout API) require authentication by passing both of the following parameters: