/hm/listingapiKey3 credits/requestBrowse an H&M category's product listing
Returns one H&M category's product listing page: normalized products with pricing, images, colors, and per-size stock, sourced from H&M's own app-backend listing data. category_id is an H&M category slug (e.g. ladies_newarrivals_all, men_newarrivals_all, ladies_jeans) -- this build does not expose a category/nav-tree discovery endpoint, so category_id values are currently sourced from known H&M storefront paths rather than a lookup call. Pagination is page-based and real: requesting a page beyond the category's real last page returns a normal response with an empty products array rather than an error.
Required params: category_id:query