Amazon FBA Integration Services
Stop losing sales to FBA sync failures
Your store, Amazon FBA, and every other fulfillment channel running from one live inventory. No oversells. No manual exports. No spreadsheet handoffs. Just orders fulfilled and revenue captured.
47+ FBA integrations delivered
$30M+ in integrated GMV
Avg go-live: 6 days
Today
0
orders routed
Accuracy
0%
inventory sync
Sync
0s
avg latency
ORD-8841Whey Protein 2lb · FBA→USAFULFILLED
ORD-8840Yoga Mat Bundle · MCF→CANIN TRANSIT
ORD-8839LED Desk Lamp · FBA→GBRPICKING
ORD-8838Dog Treats 5-Pack · FBA→AUSFULFILLED
ORD-8837Running Shoes M9 · FBA→USADELIVERED
ORD-8836Vitamin C Serum · MCF→USASHIPPED
ORD-8835Bamboo Cutting Board · FBA→USAFULFILLED
ORD-8834Smart Water Bottle · FBA→DEUROUTED
ORD-8841Whey Protein 2lb · FBA→USAFULFILLED
ORD-8840Yoga Mat Bundle · MCF→CANIN TRANSIT
ORD-8839LED Desk Lamp · FBA→GBRPICKING
ORD-8838Dog Treats 5-Pack · FBA→AUSFULFILLED
ORD-8837Running Shoes M9 · FBA→USADELIVERED
ORD-8836Vitamin C Serum · MCF→USASHIPPED
ORD-8835Bamboo Cutting Board · FBA→USAFULFILLED
Simulated order stream — illustrates real-time FBA routing behavior post-integration.
The real cost of manual FBA management
Your team is the integration layer. That has to stop.
Without FBA Integration
CSV exports run every 4 hours
Inventory is always hours out of date. Oversells happen on peak days.
3 people touch every order manually
Copy-paste from Shopify to Seller Central. Errors compound by week 3.
No MCF for non-Amazon orders
FBA inventory sits idle while DTC orders wait 5 days from a 3PL.
Restock is reactive, not predictive
You find out you're out of stock when a customer emails, not before.
Amazon suspends listings for errors you didn't make
Bad ASIN mapping. Mismatched dimensions. API errors no one catches.
With Redefine FBA Integration
Inventory syncs in under 60 seconds
Every sale on any channel instantly updates every other channel. Zero oversells.
Zero human touchpoints on routing
Orders go from your store to Amazon's pick floor automatically. Every time.
MCF routes every channel through FBA
Shopify, BigCommerce, and wholesale orders fulfilled from the same FBA pool.
Threshold alerts trigger before stockout
Restock signals fire automatically when FBA stock drops below your floor.
ASIN mapping and error recovery built in
Validated SKU-to-ASIN maps. Automatic retry on SP-API failures. Alerts before listing issues escalate.
How your FBA integration works
From store order to FBA pick floor in under 60 seconds
Every stage is automated, monitored, and error-recovered. Click any stage to see exactly what Redefine builds and maintains at that point in your pipeline.
Your Store
Integration Engine
Seller Central API
FBA Warehouse
MCF Routing
Tracking Push
Inventory Sync
Stage 1 — Your Store
Shopify, BigCommerce, WooCommerce, or headless
New orders, inventory edits, and product updates from your store trigger the integration in real time. Webhooks fire within 5 seconds of any change. No polling. No cron jobs.
ShopifyBigCommerceWooCommerceHeadlessCustom API
POST/orders/createORD-8841200 OK · 42ms
PUT/inventory/updateSKU-A291200 OK · 38ms
POST/orders/createORD-8840200 OK · 51ms
GET/products/sync429 SKUs200 OK · 66ms
Stage 2 — Integration Engine
Normalization, mapping, and retry logic
Your store SKU maps to Amazon's ASIN and MCF product codes. Dimension validation, weight checks, and address normalization happen before anything touches the SP-API. Errors are caught here, not at Amazon's door.
SKU-ASIN mappingDimension validationAuto-retryError alerting
Store SKUASINStatus
WP-2LB-VANB08X4Q3RF2MAPPED
YM-PRO-BLKB09J7NWMQKMAPPED
LED-DK-WHB07Z8CXTRPMAPPED
DOG-5PK-CH—REVIEW
Stage 3 — Seller Central API (SP-API)
OAuth 2.0, rate-limited, resilient
Redefine manages your SP-API credentials, handles token refresh, respects rate limits with exponential back-off, and monitors for throttling events. Your listing health stays clean.
OAuth 2.0Rate limitingToken rotationListing health monitor
ConnectionLIVE
Requests today2,841
Rate limit headroom
68% remaining
Last token refresh4 min ago
Stage 4 — FBA Fulfillment Network
Order routed to nearest warehouse
Amazon picks the optimal FBA warehouse for delivery speed and cost. Prime 2-day eligibility is maintained automatically. Your order acknowledgment comes back in seconds, not hours.
Prime eligibleMulti-warehouse routingInbound shipment planning
PHX7 — Phoenix, AZACTIVE · 1,240 units
LAX9 — Los Angeles, CAACTIVE · 840 units
ORD2 — Chicago, ILLOW · 120 units
LTN4 — Luton, UKACTIVE · 390 units
Stage 5 — Multi-Channel Fulfillment (MCF)
One FBA inventory, every storefront
Shopify DTC, BigCommerce B2B, wholesale portals — all routed through your FBA inventory via MCF. One inventory pool. Unified fulfillment cost. No 3PL juggling.
Shopify MCFBigCommerce MCFB2B wholesaleChannel split reporting
Amazon Marketplace54%
Shopify DTC31%
B2B Wholesale11%
Other Channels4%
Stage 6 — Tracking Push
Tracking back to your store, automatically
Amazon's carrier tracking number pushes back to your store order record within minutes of shipment. Customer notifications fire from your own branded email, not Amazon's. WISMO tickets drop immediately.
Auto tracking pushBranded notificationsWISMO reduction
ORD-88411Z999AA1012345PUSHED
ORD-88389400111899223PUSHED
ORD-8835927489281948PENDING
Avg push latency: 3.2 min post-ship
Stage 7 — Inventory Sync & Restock Signals
Stock deducted everywhere, instantly
The moment FBA confirms a pick, inventory drops across every connected channel. Below-threshold alerts fire before you hit zero. Your reorder decision uses real data, not a spreadsheet guess.
Real-time deductionRestock alertsCross-channel accuracy
WP-2LB-VAN1,240 units
YM-PRO-BLK142 units
RESTOCK ALERT — below 150 threshold
LED-DK-WH390 units
What Redefine builds and maintains
Every layer of your FBA pipeline, owned and monitored
Live Inventory Sync Engine
Bidirectional sync updates every channel within 60 seconds of any inventory event. FBA, MCF, and your store always agree on available stock.
60 sec
average sync latency
Smart Order Router
Rules-based routing decides FBA vs MCF vs 3PL for every order based on destination, item weight, cost, and delivery SLA. Configurable per SKU or channel.
100%
routing accuracy on mapped SKUs
Listing Health Guard
Monitors ASIN suppression, stranded inventory, and policy flags in real time. Alerts reach you before Amazon takes action on a listing.
Stranded inventory alerts
Suppression notifications
Policy flag early warning
Returns Processing Loop
FBA returns are caught, graded, and either re-routed to sellable inventory or flagged for removal. Your restockable units reappear automatically.
Restock Threshold Engine
Per-SKU restock floors trigger alerts before you go zero. Integrates with your supplier portal or 3PL for semi-automated replenishment.
Inbound Shipment Planner
Builds your FBA inbound shipment plans with correct box weights, SKU quantities, and warehouse routing — submitted via API, not Seller Central's UI.
Proof of work — not a promise
From zero FBA presence to unified fulfillment across every channel
Health & NutritionAmazon FBA + MCFShopify DTC
A new supplement brand launching with no prior ecommerce infrastructure — no Amazon presence, no Shopify store, no unified fulfillment, and no lifecycle marketing system.
Challenge
No trademark protection, no Brand Registry access, no FBA setup, and no inventory strategy connecting Amazon with their DTC channel. Every order would have required manual handling across two disconnected systems.
Result
Nutraflav launched with trademark protection, Brand Registry access, and a fully branded Amazon storefront live alongside a conversion-optimized Shopify store. Amazon FBA was implemented and paired with MCF for unified fulfillment across both channels from a single inventory pool.
0
%
Inventory accuracy across FBA + MCF
0
pool
Unified inventory for all channels
0
days
From brief to first live FBA order
Amazon SP-API Architecture
Built on Amazon Selling Partner API — not middleware you don't control
Every Redefine FBA integration connects directly to Amazon's SP-API. No third-party SaaS layer. No black-box middleware. Your data, your credentials, your integration.
Core
SP-API OAuth 2.0
Seller credential management
Orders
Orders API
Order ingestion & status sync
Fulfillment
FBA Inbound API
Shipment plan creation
MCF
MCF Create Order API
Cross-channel fulfillment routing
SP-API OAuth 2.0 — How we manage your credentials
Redefine handles token refresh cycles, LWA (Login with Amazon) credential rotation, and scoped permission sets. You authorize once. We maintain access indefinitely with zero manual intervention from your team.
LWA Token RotationScoped PermissionsSandbox Testing
Orders API — Full order lifecycle management
Polls and webhooks pull Amazon orders into your integration pipeline. Order status, fulfillment confirmation, and cancellations sync back to your store in under 3 minutes. Rate limiting and back-off handled automatically.
getOrdersgetOrderItemsExponential back-off
FBA Inbound API — Shipment plans without the UI
Creates and submits inbound shipment plans via API — correct box counts, SKU quantities, prep instructions, and warehouse assignments. No manual entry into Seller Central. Estimated to save 4–6 hours per inbound cycle.
createInboundPlanBox labels APIPrep instruction rules
MCF API — FBA inventory serving every channel
createFulfillmentOrder routes Shopify, BigCommerce, and B2B orders through FBA inventory via MCF. Carrier, service level, and delivery window are passed programmatically. Tracking numbers return automatically.
createFulfillmentOrdergetFulfillmentPreviewTracking sync
Why this integration is different
Not a plugin. Not a SaaS subscription. A built, maintained integration you own.
| Capability | DIY / Spreadsheet | SaaS connector tools | Redefine |
|---|---|---|---|
| Real-time bidirectional inventory sync | |||
| MCF routing for non-Amazon orders | |||
| Built on SP-API (no third-party middleware) | |||
| Ongoing monitoring and error recovery | |||
| You own the codebase and credentials | |||
| Inbound shipment planning via API |
Questions before you start
Answered directly
Redefine builds integrations for Shopify, BigCommerce, WooCommerce, Magento, and headless or custom storefronts with a REST API. If your store can emit a webhook on order creation and accept an inventory update payload, we can integrate it. We do not use off-the-shelf connectors — the integration is purpose-built for your specific SKU structure and fulfillment rules.
Most standard FBA integrations go live within 5 to 8 business days after you approve the scoped proposal and sign off on your SKU-to-ASIN mapping. Complex multi-warehouse setups or MCF-only flows with custom routing rules take 10 to 14 days. We test in Amazon's sandbox environment before any live traffic touches your inventory.
All SP-API calls include exponential back-off with configurable retry limits. If the API is throttled, requests queue and retry without any order data being lost. If Amazon's API is fully down, we alert you within 5 minutes and hold orders in a safe queue until service resumes. Your store inventory is not deducted until FBA confirms the pick, preventing phantom deductions during outages.
No. The SP-API integration works with any active Seller Central account with FBA enabled. Brand Registry is recommended if you want A+ Content and full listing control, and we can help you apply for it as part of the engagement. If you have Brand Registry, we use it to configure additional API scopes that unlock more granular listing management.
Yes. MCF routes orders from any connected channel through the same FBA inventory pool. We build a rules engine that determines whether each order goes through FBA (Amazon marketplace), MCF (other channels), or a fallback 3PL based on the destination country, SKU, weight, and SLA you configure. Each channel gets its own routing logic.
The build is scoped and priced per line item before any work starts. Typical FBA integration builds start at $3,200. Ongoing monitoring, error recovery, and API maintenance is available as a retainer from $490 per month. There is no per-order fee. Pricing is fixed and shown in your proposal before sign-off — no surprise add-ons.
Is this the right fit for you?
We're direct about who we work best with
Good fit
You sell on Amazon FBA and at least one other channel (Shopify, BigCommerce, B2B)
Your team is currently touching order data manually between systems
You've oversold on at least one channel in the past 90 days
You have more than 50 active SKUs in FBA
You want to use MCF to fulfill non-Amazon orders from your FBA pool
You need a developer to own the integration long-term, not a SaaS vendor
Not the right fit
You sell on Amazon only, with no other storefront to sync
You're pre-launch with fewer than 10 SKUs and no existing store
You're looking for a monthly SaaS tool with a no-code dashboard
You want the integration managed and paid for on a per-order basis
Your catalog changes weekly and needs a product-information management system first
Not sure where you fall? Tell us your situation and we'll be straight with you. Submit a brief — no commitment, no pitch.
Start your FBA integration
Tell us your setup. We'll scope it in 3 days.
No commitment. No pitch. Submit your brief and receive a line-by-line scoped proposal within 3 business days.
1
Submit your brief — store platform, FBA account status, SKU count2
Call within 48 hours — 30 minutes to map your integration requirements3
Scoped proposal in 3 days — line-by-line, fixed price, no surprises4
Integration live within 1 week of sign-offBrief received.
We'll review your FBA setup and send a scoped proposal within 3 business days. Expect a call within 48 hours to confirm the details.
Response within 48 hours
Line-by-line scoped proposal
47+ FBA integrations delivered
You own the codebase
Ready to stop managing FBA manually?
No commitment. No pitch. A scoped proposal in 3 days.