{
  "name": "USDA FoodData Central Food Item",
  "description": "Structure of food records from the USDA FoodData Central API",
  "fields": [
    {"name": "fdcId", "type": "integer", "required": true, "description": "Unique FDC identifier"},
    {"name": "description", "type": "string", "required": true, "description": "Food name/description"},
    {"name": "dataType", "type": "string", "required": true, "description": "Foundation, Branded, SR Legacy, Survey, Experimental"},
    {"name": "publishedDate", "type": "date", "required": false, "description": "FDC publication date"},
    {"name": "foodCategory", "type": "string|null", "required": false, "description": "USDA food category"},
    {"name": "brandOwner", "type": "string|null", "required": false, "description": "Brand owner (Branded only)"},
    {"name": "ingredients", "type": "string|null", "required": false, "description": "Ingredient list (Branded only)"},
    {"name": "servingSize", "type": "number|null", "required": false, "description": "Standard serving size"},
    {"name": "servingSizeUnit", "type": "string|null", "required": false, "description": "g, ml, etc."},
    {"name": "foodNutrients", "type": "array[FoodNutrient]", "required": false, "description": "Nutrients per 100g"}
  ],
  "nested": {
    "FoodNutrient": [
      {"name": "nutrientId", "type": "integer"},
      {"name": "nutrientName", "type": "string"},
      {"name": "nutrientNumber", "type": "string"},
      {"name": "unitName", "type": "string", "description": "g, mg, kcal, IU, etc."},
      {"name": "value", "type": "number", "description": "Amount per 100g"}
    ]
  }
}