Payrix Resource Center / Implementation Guide API Quick Start Guide Supplemental API guides and documentation. What is an API Key? Disbursement Reporting via API Generating an API Key API CALL SYNTAX Transaction API Error Codes / Transaction Responses API: HOW TO ADD A NEW MERCHANT API: UPLOADING MERCHANT DOCUMENT Build Reports via the API Request Tokens (Request Idempotency) API Specification Supplement (Entities, Accounts, Merchants, Members) Multiple Merchants with Single Login via API Payrix API Hierarchy Terminology Creating and Managing Users via API Payrix API Docs / API Models How to Update a Group via API Updating Merchant Values After Boarding ×