Glossary
WooCommerce REST API
The interface a separate storefront uses to read your store.
What it is
The REST API is WooCommerce's native way of exposing products, orders, customers and settings to applications outside WordPress, authenticated with keys you generate in the admin.
Why it costs you money
It is what makes a decoupled storefront possible without modifying WooCommerce. It is also how integrations — accounting, inventory, ERP — read and write without a plugin sitting inside the site.
How to check it yourself
Generate read-only keys first, and check rate and payload behaviour on your largest category before designing around it.