Over 1000 merchants trust OneCart to automatically sync inventory, centralize orders, and save 10+ hours weekly managing their WooCommerce and TikTok Shop stores.
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Connect WooCommerce and TikTok Shop in under 10 minutes with OneCart's guided setup.
WooCommerce gives you a self-hosted store on WordPress, and TikTok Shop turns social discovery into checkout. The two authenticate in completely different ways, so a single-channel connector cannot bridge them. OneCart links WooCommerce through REST API keys and TikTok Shop through its authorisation page, so stock stays aligned between your own site and the marketplace, with your other channels manageable from the same dashboard.
OneCart holds the source-of-truth quantity and updates your linked TikTok Shop listings when stock changes on a connected channel, so a sale on WooCommerce keeps TikTok Shop aligned. If stock would go negative it sends zero to help prevent overselling.
Orders from both your WooCommerce site and TikTok Shop are brought into OneCart automatically and land in one queue. TikTok orders are checked on a regular cycle rather than instantly, so you fulfil from one dashboard.
Cross-post a product to TikTok Shop from OneCart, choosing the required TikTok category before you submit and setting the main image. OneCart sends each variant with its price and quantity, then links the new TikTok listing back to OneCart so it stays in sync.
Connect WooCommerce with REST API keys. In your WordPress backend go to WooCommerce > Settings > Advanced > REST API and click Add Key. Set the Description to OneCart, pick an admin user, set Permissions to Read/Write, and click Generate API key. Save the API Key, API Secret, and your site URL, and make sure the Legacy API is enabled. If you run a firewall such as Cloudflare, whitelist the OneCart app first.
Add the WooCommerce store to OneCart with those credentials at app.getonecart.com/shops/new?platform=WooCommerce.
Connect TikTok Shop: in My Platforms, click the TikTok Shop Connect button, log in to your TikTok Shop seller account on TikTok's authorisation page, and approve OneCart's access. OneCart automatically brings in your recent TikTok orders, the last six months by default, and those backfilled orders do not change your stock. To list a product on TikTok Shop, cross-post it from OneCart and choose a TikTok category, which is required.
Manage products once in OneCart and cross-post them to TikTok Shop, choosing the required TikTok category as you go, instead of rebuilding each listing by hand in TikTok Shop Seller Center.
When a sale happens on WooCommerce, OneCart updates the matching SKU on your linked TikTok Shop listings when stock changes, keeping both channels aligned on what is in stock.
Everything you need to know about connecting WooCommerce and TikTok Shop with OneCart.
REST API credentials. In WooCommerce > Settings > Advanced > REST API, add a Read/Write key for an admin user, save the key, secret, and site URL, and enable the Legacy API. If a firewall such as Cloudflare is active, whitelist the OneCart app. TikTok Shop connects differently, by approving OneCart on TikTok's own authorisation page.
Yes. TikTok Shop requires a category for every product, so OneCart asks you to choose one when you cross-post. You set the main image too, and any additional images are added a few moments later in the background.
It is built to reduce it. OneCart holds the source-of-truth quantity and updates your linked TikTok Shop listings when stock changes, and it sends zero rather than a negative number. No tool can promise zero oversells on a third-party marketplace, but one shared stock pool is the main way to avoid double-selling.
OneCart has plans for sellers at different order and SKU volumes, so the right plan depends on how much you sell. You can compare plans and what each includes at /pricing/.
Here's what businesses like yours have achieved by connecting WooCommerce and TikTok Shop.
"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 TikTok Shop, 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 TikTok Shop from WooCommerce 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 TikTok Shop without the manual work.
"I expanded to TikTok Shop 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 WooCommerce, we instantly update TikTok Shop'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 WooCommerce and TikTok Shop 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 WooCommerce and TikTok Shop with OneCart.
The all-in-one solution for WooCommerce & TikTok Shop sellers who want to grow without the headaches.
Never worry about stock levels again. Our instant, 24/7 synchronization updates WooCommerce and TikTok Shop 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 WooCommerce, TikTok Shop, 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 WooCommerce and TikTok Shop seamlessly.
Our simple 3-step process gets you up and running fast.
Create your OneCart account and connect your WooCommerce and TikTok Shop 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 WooCommerce and TikTok Shop stores from one dashboard with real-time synchronization.
Time: Immediate
Most merchants complete setup in under 30 minutes!
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