External Fulfillment Inventory API

Use the External Fulfillment Inventory API to update and manage inventory on multiple Amazon fulfillment channels, including the following:

Seller Flex / FBA Onsite
Multi Seller Flex
Easy ship
Self ship
MFN Self Delivery
Amazon Pharmacy

Sellers who sell across multiple channels can use this API to publish absolute location-level inventory from their own inventory management systems, including POS, ERP, and WMS.

Current version	Legacy versions	Availability	Sandbox
v2024-09-11 (Reference \| Model)	None	Sellers only	Static

Release notes

October 1, 2025

Use cases

The following use case examples are available for the External Fulfillment Inventory API v2024-09-11:

Publish location-level inventory
Retrieve location-level inventory

Roles for the External Fulfillment Inventory API v2024-09-11

batchInventory

Attribute	Value
Regions	NA, EU, FE
Required roles (need at least one)	Direct to Consumer Shipping (Restricted)