Penny

Retrieves detailed product information (materials, sizing, care instructions, variants) for products found via Penny. Best used for follow-up questions about specific products.

Searches for products across all available brands and stores via Penny. Supports text queries, image-based visual search, and optional filters (gender, price range, condition, etc.). Filters should reflect the user's request; unspecified filters are omitted. For visual search: prioritize image_url if provided, then image_index for png/jpeg/webp uploads, otherwise use a text description of the image. This catalog only contains physical, shippable products. It does not carry digital goods, gift cards, e-books, software, subscriptions, event tickets, or similar non-physical items. If the user asks for these, let them know they are not available rather than searching. Returns product results for browsing or price tracking.

Fetches all products the user is currently tracking for price drops via Penny. No arguments needed.

Allows the user to track the price of one or more products via the Penny app. Accepts an array of products, each with a productId and action ("add" or "remove"). Can handle mixed add/remove operations in a single call.