Choose the right OpenCart REST API documentation and demo for your integration
Compare Admin API and Shopping Cart API options by use case, OpenCart version and authentication method.
Admin REST API – Demo & Docs
Choose the right OpenCart version for back-office integrations. Manage products, orders and customers with API Key for fast testing or OAuth for secure production access.
OpenCart 4 Latest
OpenCart 3 Most used
Show legacy admin demos (OpenCart 2 / 1.5)
OpenCart 2
OpenCart 1.5
Shopping cart API – Demo & Docs
Build cart, checkout and order placement flows from a custom storefront or mobile app. Use API Key for fast testing or OAuth for secure production access.
OpenCart 3 Most used
Show legacy shopping cart demos (OpenCart 2)
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⭐ 5.0/5 from 70+ verified reviews · Supports OpenCart 1.5.x – 4.1.x · PHP 7 & 8 compatible