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Official Selling Partner API (SP-API)

Amazon Inventory Management Integration & Real-Time POS Sync

Eliminate stockouts and safeguard your Seller Central metrics. LookPOS directly connects physical checkout registers and central warehouses with Amazon SP-API. Instant 2-way stock deduction, automated FBM order ingestion, and smart safety stock buffers.

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LookPOS > Connect / Update Amazon SP-API Account
LookPOS Amazon SP-API Connection and Holdback Configuration Screen
LWA OAuth 2.0 Credentials Active Safety Stock: 0 Units Holdback
<20s
FBM Inventory Update Latency
100%
Overselling Prevention with Holdbacks
0%
Per-Order LookPOS Surcharge
FBA & FBM
Unified Multi-Warehouse Ledger
Direct SP-API Engineering

Engineered Specifically for High-Volume Amazon Sellers

Managing an active brick-and-mortar store alongside an Amazon Seller Central account is hazardous without sub-second inventory coordination. Here is how LookPOS protects your business.

FBM Real-Time Inventory Push

When an in-store cashier rings an item through LookPOS barcode scanner, our backend automatically pushes an asynchronous SP-API inventory delta update to Amazon, ensuring your merchant-fulfilled listings reflect live counts.

Safety Stock (Holdback Qty)

Prevent out-of-stock cancellations that trigger Amazon Seller Performance warnings. Configure a holdback buffer (e.g., 3 units); when stock reaches 3, LookPOS automatically broadcasts 0 to Amazon while physical customers can still purchase.

Dynamic Pricing Rule Formula

Amazon referral fees range between 8% and 15%. LookPOS includes an automated price adjustment engine: apply a percentage markup (e.g. +15%) or flat addition over your POS MSRP so online sales maintain target profit margins.

Automated FBM Order Ingestion

Amazon orders are automatically ingested into LookPOS Order Management. Generate integrated picking slips and packing lists, and transmit package carrier tracking details back to Amazon to confirm shipment on time.

Multi-Warehouse Routing

Select specific supply warehouses or retail outlets for Amazon inventory pooling. Route California orders to West Coast stock and New York orders to East Coast stock, keeping walk-in retail inventory fully protected.

Rate-Limit Compliant Queuing

Amazon SP-API strictly throttles inventory feed requests. LookPOS batches updates into high-throughput JSON feeds using Redis queues, preventing 429 quota exceptions during flash sales and Prime Day traffic peaks.

Step-by-Step Setup

How to Connect Amazon SP-API in LookPOS

Direct Seller Central OAuth configuration takes less than 5 minutes without writing a single line of code.

1

Generate LWA Credentials

Navigate to Amazon Seller Central > Apps & Services > Develop Apps to retrieve your LWA Client ID, Client Secret, and Refresh Token.

2

Configure Store in LookPOS

Paste your credentials into LookPOS Integrations > Amazon tab. Select your target marketplace (e.g., US, UK, Germany, Canada, UAE).

3

Set Location & Safety Stock

Select the primary physical fulfillment warehouse and define your safety holdback threshold to prevent overselling walk-in stock.

4

Run SKU Auto-Match

Click 'Auto-Match Unmapped SKUs' to pair your Amazon ASINs/MSKUs with in-store barcodes. Live bi-directional sync begins immediately.

Unified Multi-Account Dashboard

Manage multiple Amazon regional accounts (US, CA, UK, EU, UAE) alongside your physical retail locations in one unified command center.

  • View real-time sync logs and API payload response timestamps.
  • Trigger instant manual stock pushes or order imports anytime.
  • Audit unmapped SKUs with 1-click product mapping wizard.
Connect Your Amazon Account
LookPOS Multi-Channel Marketplace Hub
LookPOS Marketplace Management Hub showing connected Amazon account
Cost & Feature Comparison

LookPOS vs Dedicated Amazon Inventory Middleware

See why multichannel retailers are ditching expensive standalone inventory tools in favor of LookPOS.

Feature / Capability LookPOS Platform Dedicated Amazon Middleware (Sellbrite / ChannelEngine) Manual Seller Central Management
Pricing Model $95 – $195 / year (Flat) $200 – $800 / month + GMV commission $39.99/mo (Amazon Pro account only)
Physical Retail POS Included Yes (Cloud + Offline POS) No (Requires separate POS subscription) No POS capability
Safety Stock Holdback Buffer Native per-channel config Available on top-tier plans only Manual adjustment per listing
SP-API Real-time Order Import Sub-minute queue ingestion 15 to 30 minute polling cycles Manual CSV download
Double-Entry Accounting & Ledger Built-in P&L and expense tracking Requires third-party accounting sync Complex Amazon settlement reports
Frequently Asked Questions

Amazon Inventory Management: Merchant Questions Answered

Everything you need to know about Amazon SP-API, credentials, FBA vs FBM, and multi-location setups.

How does LookPOS handle both Amazon FBA and FBM inventory?
LookPOS isolates your Fulfillment by Merchant (FBM) stock from Fulfillment by Amazon (FBA) stock. Physical in-store sales automatically deduct from your FBM listing quantities. Meanwhile, FBA stock levels are imported from Amazon fulfillment centers into a dedicated FBA warehouse in LookPOS for unified accounting and restock forecasting.
Does LookPOS protect against Amazon account suspension from overselling?
Yes. LookPOS includes a dedicated 'Safety Stock (Holdback Qty)' feature. By setting a safety holdback (for instance, 3 units), LookPOS tells Amazon your quantity is 0 as soon as physical stock reaches 3 units. This protects your Late Shipment Rate (LSR) and Order Defect Rate (ODR) from spikes caused by in-store shoppers.
How does LookPOS connect to Amazon without hitting SP-API rate limits?
LookPOS utilizes token-bucket rate limiting and asynchronous feed queues compliant with Amazon SP-API guidelines. Instead of sending single HTTP requests per item, high-volume updates are compiled into JSON feeds (POST_FLAT_FILE_INV_MGMT_DATA) to prevent HTTP 429 throttling errors.
Can I automatically increase prices on Amazon to cover seller fees?
Yes. LookPOS has a dynamic pricing formula field in the Amazon connection settings. You can automatically configure Amazon selling prices to be e.g. +15% or +$5 higher than your physical POS in-store retail price.
Which Amazon Marketplaces are supported?
LookPOS supports all Amazon global marketplaces across North America (US, Canada, Mexico), Europe (UK, Germany, France, Italy, Spain), Middle East (UAE, Saudi Arabia), and Asia-Pacific (Australia, Japan, Singapore, India).

Start Syncing Your Amazon Store with LookPOS Today

Safeguard your seller ratings, streamline order fulfillment, and eliminate double-entry inventory headaches once and for all.

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