Reverse image search for products. Given a publicly reachable image URL, returns ranked visual matches with title, source page link, and (when available) price, rating, and stock signal. Matches that resolve to Amazon or Walmart product pages are normalized to a canonical productUrl that feeds directly into get-product-details and order-product. Ideal for: turning a photo of a real-world item into a buyable product, building visual shopping flows, finding the source of an item seen in a social-media image.
