Over 1000 merchants trust OneCart to automatically sync inventory, centralize orders, and save 10+ hours weekly managing their Amazon and Shopee stores.
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Connect Amazon and Shopee in under 10 minutes with OneCart's guided setup.
OneCart’s wedge is that it syncs Amazon together with Shopee and your other marketplaces from one dashboard, which the single-channel connectors built into Amazon or Shopify do not do. Amazon is one of the largest marketplaces in the world, and Shopee is a leading marketplace across Southeast Asia, so sellers who run both usually juggle two very different seller centres by hand. OneCart links an Amazon account and a Shopee shop so one inventory pool feeds both and every order lands in a single queue.
OneCart holds the source-of-truth quantity and pushes stock to Amazon. When a sale happens on Amazon it deducts the OneCart quantity and updates Shopee and your other connected channels, so a unit sold on Amazon is reflected on Shopee and you avoid overselling across both.
Orders from Amazon and Shopee are brought into OneCart automatically and land in one queue. Amazon orders are collected by polling roughly every ten minutes, so you fulfil from a single dashboard instead of two seller centres.
OneCart imports your existing Amazon listings and can cross-post products to either channel from your catalogue. For Shopee, titles must be 10 to 120 characters and OneCart converts the description to plain text and replaces the '&' character. Map each Variant SKU in OneCart to the SKU on each store so quantities sync to the right listing.
Connect Amazon: start adding an Amazon shop in OneCart and pick your region in the Amazon connect modal. OneCart supports Amazon US, Canada, Mexico, Brazil, the UK and EU, plus Singapore, Australia, and Japan. You are taken to Amazon Seller Central to give consent, and once you approve, OneCart creates the connection and imports your Amazon listings and orders.
Connect Shopee: go to Settings > My Platforms > Manage Connections, open the Inactive Shops tab, click Refresh Shopee, log in to Shopee Seller Centre, and click Confirm Authorization. A confirmation banner appears once Shopee is linked.
Manage everything from one place. Add any other marketplaces you sell on, such as Lazada or TikTok Shop, the same way, so inventory and orders sync across Amazon, Shopee, and the rest together.
OneCart pushes stock to Amazon, and when a sale happens on Amazon it deducts the OneCart quantity and updates your other channels, so a unit sold on Amazon is reflected on Shopee and you avoid overselling across both.
Rather than a single-channel connector, OneCart manages Amazon together with Shopee and your regional marketplaces, so you work from one product list and one order queue instead of logging into each seller centre separately.
Everything you need to know about connecting Amazon and Shopee with OneCart.
Amazon connects through Seller Central: you pick your region in the connect modal, then approve OneCart's access on Amazon. Shopee connects inside Shopee Seller Centre instead: from Manage Connections you open the Inactive Shops tab, click Refresh Shopee, log in, and click Confirm Authorization.
Yes. OneCart supports Amazon US, along with Canada, Mexico, Brazil, the UK and EU, plus Singapore, Australia, and Japan. You choose your region when you connect, and OneCart links to that Amazon marketplace.
Yes. OneCart supports Amazon US along with Canada, Mexico, Brazil, the UK and EU, plus Singapore, Australia, and Japan, and Shopee across its Southeast Asia markets. You can connect both in the same account and manage them from one dashboard.
Yes. OneCart is multi-channel, so you can add marketplaces like Lazada and TikTok Shop, or a storefront like Shopify or WooCommerce, the same way and manage them all from one dashboard.
Here's what businesses like yours have achieved by connecting Amazon and Shopee.
"OneCart didn't just fix our operations, it gave me my sanity back. After struggling with platforms that broke everything, I finally found a system that's reliable, affordable, and backed by real support. If you're still not on OneCart, you're leaving time, money, and peace of mind on the table."

"OneCart saved our business during the pandemic. Stock automatically syncs between platforms and I can manage everything remotely. We've cut inventory discrepancies by 100% and fulfillment time by 75%."

"Order processing that used to take 3 hours now takes just 20 minutes with OneCart. Our warehouse efficiency increased 400%, deliveries are faster, and customer satisfaction scores are up 32% since implementation."

"The OneCart team's support is outstanding. When we needed help expanding to Shopee, they worked with us one-on-one until everything was perfect. We've increased sales by 47% with no additional staff since connecting our platforms."






Expanding to Shopee from Amazon used to take days. OneCart makes it happen in hours. Copy your entire product catalog with one click - complete with descriptions, images, variants, and pricing. Get selling on Shopee without the manual work.
"I expanded to Shopee in a single afternoon using OneCart. What would have taken my team a week took just hours."
The average multi-channel seller loses $2,000+ monthly to inventory discrepancies. OneCart eliminates this entirely. When a product sells on Amazon, we instantly update Shopee's stock level, and vice versa.
Manage everything from one dashboard. Set low-stock alerts, track inventory across warehouses, and make bulk adjustments that apply to all your sales channels instantly.
"Since using OneCart, we've completely eliminated overselling issues that used to cost us thousands monthly."
Stop the daily platform-switching nightmare. OneCart consolidates all your Amazon and Shopee orders into a single, intuitive dashboard. See everything at a glance and fulfill orders in batches.
Our customers report processing times dropping from hours to minutes. Faster fulfillment means happier customers, better reviews, and higher platform rankings.
"Order processing that took 3 hours now takes 20 minutes. OneCart completely transformed our fulfillment process."
See how much you could save by connecting Amazon and Shopee with OneCart.
The all-in-one solution for Amazon & Shopee sellers who want to grow without the headaches.
Never worry about stock levels again. Our instant, 24/7 synchronization updates Amazon and Shopee within seconds of any change.
Cut admin work by 75%. Automate the tedious tasks of updating multiple platforms and reconciling inventory discrepancies.
Manage products, inventory, and orders for Amazon, Shopee, and all your other channels from one intuitive interface.
Add new sales channels or handle 10X order volume without adding staff. OneCart scales with your business without added complexity.
Get help when you need it. Our responsive team is based in Singapore and provides personalized assistance for your integration.
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Everything you need to know about connecting your stores with OneCart.
OneCart creates a real-time connection between your stores that works 24/7:
This happens automatically without any manual work, preventing overselling and inventory discrepancies that cost merchants thousands in lost sales and customer goodwill.
Our customers report saving 75-90% of the time previously spent on order management:
For a merchant processing 50 orders daily across multiple platforms, this typically saves 2-3 hours every day, time you can invest in growing your business instead.
Most merchants complete the basic setup in under 10 minutes:
Your inventory will begin syncing immediately. Our onboarding team is available to help if you need assistance, and we offer premium onboarding services for larger merchants with complex requirements.
OneCart is designed for complex catalogs with variations, bundles, and kits:
This ensures that even sophisticated product catalogs with thousands of SKUs and variations maintain perfect accuracy across all your sales channels.
OneCart scales to support businesses of all sizes:
We have clients ranging from small merchants with 10 orders/day to large enterprises processing thousands of orders daily across multiple channels. The system is designed to grow with your business.
Our integration experts are ready to help you connect Amazon and Shopee seamlessly.
Our simple 3-step process gets you up and running fast.
Create your OneCart account and connect your Amazon and Shopee stores through our guided setup.
Time: 10 minutes
Choose how products, inventory, and orders sync between platforms based on your business needs.
Time: 15 minutes
Begin managing your Amazon and Shopee stores from one dashboard with real-time synchronization.
Time: Immediate
Most merchants complete setup in under 30 minutes!
Start Your Free 14-Day TrialJoin 1,000+ merchants who have automated their Amazon and Shopee operations with OneCart.
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