WooCommerce integration
WooCommerce runs on your own WordPress site. You decide on the hosting, the plugins and what happens to your data. That also means an integration depends on your server. Connected properly, you process orders without retyping and your stock is right on every channel.
- Orders goes back and forth with Your other systems
- Stock per product or variation goes back and forth with Your other systems
- Products, prices and EAN goes back and forth with Your other systems
- Customers goes back and forth with Your other systems
Built for clients including Tata Steel, M&G Investments, Digistore24, Toppers in Concert, Bar-le-Duc and Loogman
This is the data organisations most often let flow between systems. Which of it matters to you depends on where work is getting stuck today.
Orders
New and changed orders go to your ERP, warehouse or accounting software, with order lines, VAT, shipping method and status. When the warehouse changes the status, for example to shipped, it comes back into WooCommerce.
Stock per product or variation
WooCommerce tracks stock per product or per variation. If the real stock comes from your ERP or warehouse, the integration updates the levels in WooCommerce, so you don't sell what you don't have.
Products, prices and EAN
Items, variations, prices and product copy often come from an ERP or PIM. Since version 9.2, WooCommerce has its own field for GTIN, UPC, EAN or ISBN. Useful if you also sell on a marketplace.
Customers
Customer accounts and addresses go to your CRM or email platform, so service and marketing work with the same data as your online store.
Shipping and tracking
The integration with your shipping platform or warehouse creates the label and adds the tracking to the order. The customer gets a shipping email with a tracking link, and you can see in WooCommerce what is on its way.
Refunds and payouts
Refunds you issue in WooCommerce also need to end up in your accounts, as do your payment provider's payouts. Otherwise revenue and bank don't reconcile.
For each combination: which data moves back and forth, what the standard integration does and what to watch out for.
- Connect Exact Online to WooCommerceConnect Exact Online to WooCommerce: post orders and refunds, align VAT settings, process payment provider payouts and keep stock levels up to date.
- Connect Moneybird to WooCommerceConnect Moneybird to WooCommerce: which order status creates an invoice, how to avoid duplicate invoice numbers, and what plugins do to your VAT along the way.
- Connect SnelStart to WooCommerceConnect SnelStart to WooCommerce: how business orders on account, stock and customer-specific prices flow between your online store and your accounting.
- Connect WooCommerce to bolConnect WooCommerce to bol: offers and stock to bol, orders back into your WordPress store, with your own shipping or Fulfilment by bol, without double sales.
Not always. If an existing integration for WooCommerce does exactly what you need, we'll tell you.
There are many plugins that provide a WooCommerce integration, in the WooCommerce Marketplace and in the WordPress.org plugin directory. Some come from the vendor of the other system. Mollie, for example, maintains the Mollie Payments for WooCommerce plugin, with full and partial refunds from within WooCommerce.
A plugin runs on your own WordPress. That's convenient, because you don't need a separate service. The downside: every plugin is code on your store's server that you have to update and test with every WordPress and WooCommerce update. One plugin per integration quickly becomes hard to keep track of.
If your process is standard, a well-maintained plugin is often enough. If it differs, an integration can also run outside WordPress and work through the REST API and webhooks. We can integrate any system with WooCommerce, even if there is no plugin for it.
- There is no plugin for your ERP, WMS or accounting package, or the plugin can't handle your set-up.
- You use your own product fields or plugins for bundles, subscriptions or B2B pricing that a standard integration doesn't know about.
- You don't want extra plugins on your store's server, but an integration that runs separately from WordPress.
- You also sell on marketplaces and want one stock level across all channels.
REST API
WooCommerce has a REST API (version 3) built into the WordPress REST API. You work with JSON and the usual HTTP methods for products, orders, customers and coupons, and there are batch endpoints to change several objects at once. Prerequisite: pretty permalinks switched on in WordPress, because the endpoints don't work with the default permalinks. Lists come back in pages of 10 items by default.
API keys
You create keys under WooCommerce, Settings, Advanced, REST API. You link a key to a user and choose read, write or both. Over HTTPS you send the consumer key and secret with basic authentication. Over plain HTTP, OAuth 1.0a is required.
Webhooks
WooCommerce sends webhooks when orders, products, customers and coupons are created, updated and deleted. Each message has an HMAC-SHA256 signature in the X-WC-Webhook-Signature header. After five failed deliveries in a row, WooCommerce disables the webhook by default. The logs are under WooCommerce, Status, Logs.
Delivery through WP-Cron
By default, webhooks are sent in the background through WP-Cron. WP-Cron checks on every page load which tasks are due. If no visitor comes along for a while, a scheduled task waits that long.
Dedicated order tables (HPOS)
Since WooCommerce 8.2, new installations store orders in dedicated tables by default (High-Performance Order Storage), no longer in the WordPress post tables. Extensions that haven't been adapted to this can cause problems. So work through the API, not directly in the database.
An integration moves data. In between, AI can read, sort and prepare a suggestion. Where it matters, a person decides.
Product copy
AI drafts product descriptions and SEO titles from your product data, in your store's tone of voice. An editor approves them in WordPress before they go live.
Customer questions about an order
Using the order number and email address, an assistant looks up the status and tracking through the REST API and answers straight away. Refunds and exceptions stay with your team.
Discrepancies in the accounts
AI compares orders, refunds and your payment provider's payouts and reports what doesn't add up. A person decides what happens with the discrepancy.
A disabled webhook
If the receiving server is unreachable for a while, WooCommerce disables the webhook after five failed deliveries. Without monitoring, you only notice when orders are missing. Check the status, and fetch changes periodically through the API as well.
WP-Cron on a quiet site
Because WP-Cron waits for page visits, a webhook can take a long time at night. Have WP-Cron triggered by a fixed server task, so notifications don't depend on visitors.
Updates that break the integration
An update to WordPress, WooCommerce or another plugin can change the data your integration expects. Test updates on a copy of your site first.
Reading directly from the database
Older integrations sometimes read orders straight from the WordPress tables. With HPOS, new orders are stored elsewhere, and an integration like that breaks. Work through the REST API.
What goes where
Which data moves, in which direction, and which system wins when two values differ. That is written down before anything gets built. For this integration, that means: Orders, Stock per product or variation, Products, prices and EAN, Customers, Shipping and tracking, Refunds and payouts.
Fields and rules
For every field, how it translates between the systems: statuses, VAT codes, general ledger accounts, item numbers. And what happens with a duplicate or a missing value. For this integration, that means: REST API, API keys, Webhooks, Delivery through WP-Cron, Dedicated order tables (HPOS).
Testing with real cases
In a sandbox or test administration, with the exceptions you actually run into: credit notes, partial deliveries, changed customer details.
Live, with logging and monitoring
Every sync is logged, and when something fails, someone gets an alert. If a vendor changes its API, we update the integration.

No account manager. You talk to someone who builds integrations themselves, and who will tell you when a standard integration is enough.
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Does WooCommerce have an API?
Yes. WooCommerce has a REST API (version 3) built into WordPress. You create API keys under WooCommerce, Settings, Advanced, REST API, and choose read or write permissions per key. Through that API you read and change products, orders, customers and coupons.
Plugin or custom integration: which should I choose?
A plugin is enough if your process is standard and the plugin is actively maintained. Choose a custom integration if you have your own fields, bundles or several warehouses, or if you don't want extra plugins on your store's server. An integration like that can also run outside WordPress.
Why aren't my WooCommerce webhooks arriving?
First check whether the webhook is still active: after five failed deliveries, WooCommerce disables it. Then look in the logs under WooCommerce, Status, Logs. If they do arrive, but late, WP-Cron is probably waiting for visitors.
Will an integration slow down my online store?
It doesn't have to. Run heavy tasks, such as updating thousands of prices, in steps and outside busy hours, and use the API's batch endpoints. An integration that runs as a separate service puts less load on your WordPress server than a plugin.
How do I test a WooCommerce integration safely?
Test on a copy of your site (a staging environment) with test products and test orders, and put your payment provider in test mode there. Also check what happens when the receiving side is briefly unavailable. Only when everything is right do you put the integration on your live site.
- bol.com integrationOnline marketplace in the Netherlands and Belgium where you sell as a partner, shipping yourself or through Fulfilment by bol.
- Mollie integrationPayment provider for online and in-person payments, with iDEAL, cards and other European payment methods.
- Shopify integrationHosted ecommerce platform for brands and retailers, from a first store to Shopify Plus.
Sources
The technical facts on this page come from the vendors' official documentation, checked on 19 September 2026. Vendors change their APIs and limits; when we build an integration, we always check the current state.
- WooCommerce REST API documentation (v3)
- WooCommerce developer docs: REST API
- WooCommerce developer docs: webhooks
- WooCommerce developer docs: webhooks (delivery and headers)
- WordPress: WP-Cron
- WooCommerce: High-Performance Order Storage
- WooCommerce 9.2: field for GTIN, UPC, EAN or ISBN
- WooCommerce: variable products
- WordPress.org: WooCommerce
- WordPress.org: Mollie Payments for WooCommerce





