Documentation

Build with Markup Axis.

Everything you need to integrate, extend, and ship — from REST APIs to our open-source libraries.

Get started

Make your first API call

Our APIs provide programmatic access to all core functionality. Start by obtaining an API key from your developer dashboard.

curl -X GET https://api.sandbox.markupaxis.com/v1/auth \
  -H "Authorization: Bearer YOUR_API_KEY"

All API requests require authentication via API key in the Authorization header.

1,000 requests per hour per API key. Contact us for higher limits.

RESTful endpoints for payments, subscriptions, and account management.

Need access?

Contact our team for sandbox credentials and integration support.