SP-API (Selling Partner API)
Amazon's official programming interface for seller data. Software tools use it, with your authorisation, to read orders, fees, inventory and reports from your account.
What Is the SP-API?
The Selling Partner API (SP-API) is the set of interfaces Amazon provides so that software can work with a seller account. It is the successor to Amazon Marketplace Web Service (MWS), which Amazon fully retired in 2024.
What It Provides
- Orders and finances - order details, fees, refunds and settlement data
- Inventory and fulfillment - FBA stock levels, inbound shipments and removals
- Catalog and listings - product data and listing status
- Reports and notifications - bulk reports and event feeds
How Access Works
A tool never needs your Seller Central password. You authorise the application on Amazon's own consent page, Amazon issues it a token limited to the data roles it was approved for, and you can revoke that access at any time under Manage Your Apps.
Why Data Is Not Always Instant
Amazon limits how often each kind of data can be requested, and some figures - such as fees on a new order - are only finalised later. That is why analytics tools refresh on a schedule rather than continuously.
How SellerLegend Helps
SellerLegend is built on the Amazon SP-API: it connects to your account through Amazon's authorisation flow and syncs your orders, fees, inventory and reports from there.
Want to track this metric continuously?
SellerLegend gives you a frequently-updated dashboard with all the Amazon metrics that matter.
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