{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "$id": "https://raw.githubusercontent.com/api-evangelist/united-states-department-of-agriculture/main/json-schema/usda-fdc-food-item-schema.json",
  "title": "USDA FoodData Central Food Item",
  "description": "Schema for a food item from the USDA FoodData Central database",
  "type": "object",
  "properties": {
    "fdcId": {
      "type": "integer",
      "description": "FoodData Central unique identifier"
    },
    "description": {
      "type": "string",
      "description": "Food item description"
    },
    "dataType": {
      "type": "string",
      "description": "Food data type source",
      "enum": ["Foundation", "SR Legacy", "Branded", "Survey (FNDDS)", "Experimental"]
    },
    "publicationDate": {
      "type": "string",
      "format": "date",
      "description": "Date the food item was published in FDC"
    },
    "brandOwner": {
      "type": "string",
      "description": "Brand owner for branded food items"
    },
    "gtinUpc": {
      "type": "string",
      "description": "GTIN or UPC barcode for branded items"
    },
    "foodCategory": {
      "type": "string",
      "description": "USDA food category"
    },
    "foodNutrients": {
      "type": "array",
      "description": "Nutrient values per 100g of food",
      "items": {
        "type": "object",
        "properties": {
          "nutrientId": {"type": "integer"},
          "nutrientName": {"type": "string"},
          "nutrientNumber": {"type": "string"},
          "unitName": {"type": "string"},
          "value": {"type": "number"}
        }
      }
    },
    "servingSize": {
      "type": "number",
      "description": "Serving size amount"
    },
    "servingSizeUnit": {
      "type": "string",
      "description": "Unit for serving size"
    }
  },
  "required": ["fdcId", "description", "dataType"]
}