Nutrition & Food Composition Lookup

Looks up what's actually in a food or branded product — nutrient values, ingredients, allergens, additives, processing classification — from two complementary sources. Does not itself perform toxicological or epidemiological analysis; feed the retrieved data into tooluniverse-toxicology (food additive/allergen safety questions) or tooluniverse-epidemiological-analysis (dietary-exposure questions) for that.

LOOK UP, DON'T GUESS: Never state a nutrient value, ingredient list, allergen, or Nutri-Score from memory — both sources are live and current; query them.

When to Use This Skill

• "How much [protein/sodium/vitamin C/...] is in [food]?" -> FoodDataCentral
• "What's the full nutrient profile of [generic or USDA reference food]?" -> FoodDataCentral
• "What are the ingredients/allergens in [branded product]?" -> OpenFoodFacts
• "Look up this barcode" -> OpenFoodFacts_get_product
• "Find products with/without [additive, allergen, Nutri-Score grade, label]" -> OpenFoodFacts_filter_products_by_tags

NOT for: assessing whether an additive/ingredient is toxicologically safe (-> tooluniverse-toxicology, e.g. CTD/AOPWiki/EPA CompTox for the additive's own chemical hazard data — this skill only tells you a product contains it); population-level dietary-exposure or disease-association analysis (-> tooluniverse-epidemiological-analysis); clinical nutrition guidelines or diet-disease management recommendations (out of scope for both tools here — they're data lookups, not guideline sources).

1. USDA FoodData Central — Authoritative US Nutrient Values

The USDA's official nutrient database: Foundation Foods (analytically measured reference values), SR Legacy (the historical USDA standard reference), Survey/FNDDS (foods as reported in national dietary surveys), and Branded (commercial products, including label-declared values).