We are excited to announce the release of a prebuilt C# SDK for SP-API. The C# SDK provides a ready-to-use solution, reduces the need for manual setup, and keeps your applications aligned with the latest SP-API updates.
While we are introducing the new prebuilt SDK, our existing SDK generation tools continue to be a robust solution for developers seeking customized implementations. These tools are particularly valuable for teams requiring specific customizations or needing complete control over the SDK generation process.

We are excited to announce the new Deferred Transaction Report type (GET_DATE_RANGE_FINANCIAL_HOLDS_DATA) for the Reports v2021-06-30 API. The Deferred Transaction Report is a point-in-time report that contains a list of deferred transactions. A single report can provide up to 10 years of data. You must request the Deferred Transaction Report through the Payments Reports Repository on Seller Central before you can use the Reports v2021-06-30 API to retrieve the Deferred Transaction Report. This change applies to all marketplaces.

The Listings Item v2021-08-01 API and JSON_LISTING_FEED now include a JSON patch merge operation. You can use this operation to:

Effective June 29, 2025, Amazon will update the attribute usage and enumeration values of numerous product types across marketplaces.

This communication follows up on attribute requirement changes implemented across Amazon's listing experiences that affect the creation and editing of product listings across all global stores. As developers migrate from legacy feed types (XML & flat files) to JSON-based Listings Items APIs, they will see updated attribute requirements designed to improve overall experience and data quality.

Deprecated SP-API resources are no longer in active development. Calls to deprecated SP-API resources will continue to be successful until their removal date. After the removal date, calls will fail. For more detailed information about SP-API deprecation dates, refer to the Deprecations table.

Effective May 28, 2025, the model of the getCompetitiveSummary operation has the following changes to enum values:

The getOrderMetrics operation of the Sales API now has an optional query parameter amazonProgram that can be used to retrieve sales metrics for the Amazon Haul program.

Effective March 31, 2026, the listCatalogCategories operation will no longer be available for sellers. As a result, the entire Catalog Items v0 API will no longer be supported in the Selling Partner API. Applications that rely on this API must migrate to Catalog Items v2022-04-01 API to avoid service disruption.

Starting May 28, 2025, the getOrderMetrics operation in the Sales API will have a new parameter amazonProgram. This parameter is not required, but clients generated from the May 28 release will have an additional parameter for which an argument will need to be supplied. This argument can be null.