FoodData Central API

REST API providing access to nutrient composition data for 600,000+ foods across Foundation Foods, SR Legacy, Survey Foods (FNDDS), Branded Foods, and Experimental Foods databases. Supports individual food lookup by FDC ID, batch retrieval of up to 20 foods, paginated food listing with filtering and sorting, and keyword search with brand filtering. Authentication requires a free data.gov API key. Standard rate limit is 1,000 requests per hour per IP address.