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Documentation Index

Fetch the complete documentation index at: https://docs.subtotal.com/llms.txt

Use this file to discover all available pages before exploring further.

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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.

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API Reference

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.

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Base URL

Append an endpoint to the base URL root address to form a complete request URL. 
https://api.subtotal.com

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Authentication

All requests must include an API key for authentication. Include the following header in each request: 
headers = {
  "X-Api-Key": "{yourkeyvalue}"
}

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Authorization

We reserve the Authorization header for endpoints that require a connection token. 
headers = {
  "Authorization": "Bearer: {connection_token}"
}