Overview

Amazon's Selling Partner API (SP-API) serves as the primary programmatic interface for sellers, vendors, and third-party developers who need to interact with Amazon's marketplace systems. This reference page outlines the support resources available to developers working with SP-API, including how to access documentation, register as a developer, and get technical assistance when issues arise.

Key Points / What Sellers Need to Know

• SP-API is REST-based — The Selling Partner API uses standard REST architecture, making it accessible to developers familiar with modern web APIs and enabling integration with virtually any programming language or platform.
• Covers core business data — SP-API provides programmatic access to critical selling data including orders, shipments, payments, inventory, and catalog information, allowing sellers to automate key business workflows.
• Efficiency gains are significant — Sellers who integrate with SP-API can reduce manual work, speed up customer response times, and scale operations more effectively than those relying solely on Seller Central's web interface.
• Developer registration is required — Before accessing SP-API endpoints, developers must register through the Amazon Developer Portal and obtain proper credentials and authorization tokens.
• Support channels exist for technical issues — Amazon provides dedicated developer support pathways for SP-API, separate from standard Seller Central support, to handle integration and technical questions.

How SP-API Works

The Selling Partner API replaced the older Marketplace Web Service (MWS) as Amazon's official interface for programmatic marketplace access. SP-API uses modern authentication through Login with Amazon (LWA) and AWS Signature Version 4 signing, providing a more secure and standardized approach than its predecessor. Developers can access a wide range of API sections covering orders, fulfillment, catalog items, product fees, reports, and financial data. Each API section has its own set of endpoints, rate limits, and data models documented in Amazon's developer portal. Applications built on SP-API must go through an approval process, and developers must specify which API sections their application requires access to during registration.