Amazon Inventory Integration for Manufacturers
Sync FBA and FBM orders with your production system, so Amazon orders and self-fulfilled orders both tie back to the same bill of materials.
How It Works
- 1
Connect via Login with Amazon
Authorize Nstock against your Seller Central account through Amazon's SP-API app authorization flow — no API keys to copy and paste.
- 2
Review and approve access
Seller Central shows exactly what Nstock is requesting access to (order and inventory data). Approve it to complete the connection.
- 3
Turn on the settings you want
FBM inventory deduction and FBA order reporting are both off by default — turn on whichever fit your operation from the Amazon Integration page.
- 4
Sync orders whenever you like
There's no scheduled sync yet — use the Sync Orders Now button to pull in your latest orders on demand.
Built for Manufacturers, Not Just Sellers
A generic Amazon repricer or inventory app tracks a stock number — it doesn't know that number is tied to a bill of materials, a raw-material lot, or a production run that hasn't happened yet. Nstock connects every Amazon order, FBA or FBM, back to the BOM behind the finished good, so when stock runs low you see the producible quantity — how many more units your materials on hand can make — instead of a flat number pulled from Seller Central. Costs follow the same path: every Amazon order carries the real FIFO/BOM-based cost of what shipped, so COGS reflects production reality instead of a per-channel estimate. This matters most for manufacturers running Amazon alongside a DTC storefront — see how this fits Shopify DTC brands that manufacture their own products, many of whom sell on both channels at once.
Amazon integration is available as part of the integrations add-on (Starter and Pro), included at no extra cost on the Business plan (as of July 2026) — see pricing for details.
Frequently Asked Questions
Does this integration cover both FBA and FBM?
Yes. FBM orders sync as Nstock orders and can deduct inventory automatically once you turn that setting on. FBA orders can import for sales and COGS reporting if you turn on that separate setting, but Nstock never deducts its own inventory for FBA orders — that stock already shipped to Amazon.
Can I run Amazon and Shopify at the same time?
Yes — both integrations draw from the same Nstock inventory and costing engine, so multi-channel sellers get one accurate stock and margin number instead of reconciling each channel separately.
Does this replace Seller Central?
No. Repricing, advertising, and Buy Box strategy stay in Seller Central. Nstock adds the production and costing layer Amazon doesn't provide.
What do I need on the Amazon side to connect?
You'll need an active Amazon Seller Central account with SP-API app authorization enabled — check Amazon's own requirements for your seller plan. Nstock's Amazon app is still going through Amazon's application review, so broad self-serve availability is rolling out; check with your Nstock contact on current status.
Can I disconnect or revoke access later?
Yes. Disconnect the integration from Nstock's Amazon Integration page at any time. Amazon doesn't provide a remote revocation endpoint for this kind of connection, so for full revocation on Amazon's side, also remove Nstock's access from Seller Central's "Manage Your Apps" page.