Connect WooCommerce to your accounting, stock and shipping

What you connect with WooCommerce

• Orders to your accounting: Exact Online, Moneybird, AFAS or Zoho Books
• Items, prices and customer group prices from your accounting back to the webshop
• Keep stock in line with your ERP or marketplaces
• Shipping labels through Sendcloud or MyParcel as soon as an order is ready
• Customers to your CRM or mailing list, with consent

How the integration works

New and changed orders come in through a webhook; a check at fixed times catches what a webhook misses. The integration records per order what has been processed, so a repeat does nothing twice. Everything runs in n8n on a dedicated server, with an integration database, logging and a failure email in plain language.

Facts about the WooCommerce API

Checked on 2 November 2026 against the official documentation. Limits, prices and versions change; the source is listed per row.

Fact	What the documentation says	Source
Authentication	REST API with a consumer key and secret (Basic Auth over HTTPS), with read, write or read-write permissions tied to a WordPress user.	WooCommerce REST API docs
Key lifetime	Keys do not expire. They stop working when the linked WordPress user is deleted.	WooCommerce REST API docs
Rate limits	None in the official documentation. The limit is your hosting.	WooCommerce Developer Docs
Webhooks	Yes, for orders, products, customers and coupons (created, updated, deleted), signed with HMAC-SHA256. After more than five consecutive failed deliveries WooCommerce disables the webhook.	WooCommerce webhooks
Test environment	No WooCommerce sandbox; you test on your own staging install.	WooCommerce Developer Docs
Version	Current version wc/v3. Since WooCommerce 9.0 (June 2024) the Legacy REST API is a separate extension that will not be maintained indefinitely.	WooCommerce: Goodbye Legacy REST API
API cost	None. WooCommerce is open source; you only pay for hosting.	WooCommerce Developer Docs
n8n	Built-in WooCommerce node (customers, orders, products) and WooCommerce trigger with twelve events.	n8n documentation

What you need on your side

• A WordPress administrator who can create an API key under WooCommerce, Settings, Advanced, REST API
• HTTPS on the webshop and pretty permalinks enabled; the API does not work with default permalinks
• Access to the accounting package or CRM the orders should go to
• A list of the plugins that add fields to an order, so the integration knows those fields

Where it often goes wrong, and how I prevent it

• Plugins with their own fields: many plugins add fields to an order. I record in advance which fields the integration uses.
• Webhooks that stop: WooCommerce can disable a webhook after repeated failures. An additional check and a heartbeat alert make sure you notice.
• Variations and item codes: without an unambiguous item code, an order does not land in the accounts. The integration reports which code is missing.
• VAT settings: the VAT in the webshop must match the VAT codes in the accounts. I agree that in advance.

In practice

For Mercabilis I connected a WooCommerce webshop to Exact Online on a dedicated server with Cloudflare in front: 14 workflows including error handling, an integration database of 12 tables and customer group prices for logged-in customers. Read the case →

What it costs

I build a WooCommerce integration as one scoped process for a fixed price, from €750. Maintenance and monitoring are a monthly fee: n8n management from €250 per month, server management €145 per server. In the free assessment we work out your process, including what the webshop itself costs in hosting. All prices and what is included →

What I do not do

• I do not build WooCommerce plugins or change your theme; the integration runs in n8n next to the webshop.
• I do not host the webshop unless we agree on server management.
• I do not change the VAT settings of your webshop myself; I align those with you and your accountant.

Frequently asked questions about connecting WooCommerce

Why not a ready-made WooCommerce plugin for the integration?

A plugin often runs on someone else's server and you cannot see what it does. An integration in n8n is yours, is readable and sends an alert when something goes wrong.

Does this also work with customer group prices?

Yes. At Mercabilis the integration fetches the prices per customer group from Exact Online, so a logged-in customer sees their own price. Exact remains the only place where a price changes.

What if an order does not come through?

Then you get a failure email with the order number, what went wrong and what you can do. Temporary errors are retried automatically.

What happens when WooCommerce disables the webhook?

WooCommerce disables a webhook after more than five consecutive failed deliveries. That is why a scheduled check runs next to the webhook and picks up missed orders, and you get a notification as soon as a webhook has been disabled.

Does WooCommerce limit API calls?

Not in the official documentation. The limit is your hosting. The integration therefore works in batches with pauses, so your webshop does not slow down when many orders arrive at once.