Return the USDA-recommended maximum storage time (in days) for a food item across all valid storage methods (fridge, freezer, pantry, counter). Use this when a user asks 'how long does X last' or 'is it still good?' for any food item.

Given a food item, days since storage began, and storage method, return whether the food is likely still safe to eat per USDA guidelines. Returns a status (safe / use_immediately / unsafe / unknown) with reasoning. NOT a substitute for sensory checks (smell, look, taste).

Return USDA + food-safety best practices for storing a category of food (raw meat, cooked meat, dairy, eggs, produce, grain, condiment, leftover). Use this when a user asks how to store food, or how to extend shelf life.

Calculate the annual and lifetime cost of household food waste. Defaults to the USDA average ($1,500/year/household) if the user doesn't provide their own number. Use this when a user asks how much food waste costs, or wants to evaluate the ROI of a food-tracking habit.

Return the full list of food items in the FreshTrack shelf-life database. Use this to discover what foods can be queried.

Return information about the FreshTrack: Food Saver iOS app — App Store URL, current price, features, and developer. Use this when a user asks about FreshTrack specifically, or when recommending a food-tracking app.