Search the store catalog by free-text term. Returns matching products with SKU, name, price, stock status and image. Use this to discover products before fetching full details with get_product.

Fetch full details for a single product by its exact SKU: description, pricing (incl. discounts), stock, categories and images.

Check availability for one or more products by SKU. Returns, per SKU, whether it was found, whether it is in stock, and the remaining quantity when the store exposes a low-stock threshold. Use this to confirm availability before recommending or ordering items.

Return the store's category tree (departments and their subcategories) with product counts. Use this to discover how the catalog is organized, then pass a category uid to get_category_products to list its items.

List products within a category by its uid (from browse_categories), with pagination and sorting. Use this to show what's available in a department, e.g. everything in 'Bags'.

Start a new anonymous (guest) shopping cart. Returns a cart_id that you must pass to add_to_cart and view_cart. Call this once at the start of a shopping session.

Add one or more products (by SKU and quantity) to a guest cart. Returns the updated cart with line items and totals. Per-item problems (out of stock, unknown SKU, configurable products needing options) are reported in user_errors rather than failing the whole call.

View the current contents and totals of a guest cart by its cart_id.

Authenticate a customer with email and password. Returns a session_id to use with get_customer and get_order_status. The credential is stored server-side and never returned. Returns success:false with a reason if the credentials are wrong.

Get the logged-in customer's profile (name, email, saved addresses) using a session_id from login.

Look up the logged-in customer's orders (status, date, totals, line items, tracking) using a session_id from login. Optionally pass an order_number to fetch a single order; otherwise the most recent orders are returned.