Overview
Subtotal API
Make HTTP requests in your preferred programming language.
Introduction
The Subtotal API is built on REST principles, ensuring a stateless, scalable, and reliable interface for interacting with merchant accounts on behalf of customers.
Our API reference provides all the necessary details to integrate Subtotal’s features into your application, including endpoint descriptions, request and response formats, and examples.
Base URL
Append an endpoint to the base URL root address to form a complete request URL.
Authentication
All API endpoints are authenticated using API keys. Include the following headers in every request.
Authorization
We reserve the Authorization header for endpoints that require a connection token.