USDA FoodData Central

The USDA FoodData Central API provides access to nutrient data for over 300,000 foods including Foundation Foods, branded products, SR Legacy, and survey foods (FNDDS). Each food record includes macronutrients, micronutrients, serving sizes, and data source information. Rate limited to 1,000 requests per hour with a free data.gov API key. Data is public domain under CC0 license.

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What You Can Query

You can search foods by keyword with filters for data type and brand (foods/search), retrieve the full nutrient profile for a specific food by its FDC ID (food/{fdcId}), look up multiple foods at once in a batch request (foods endpoint), and page through the complete food database (foods/list).

What You Can Do

Looking up detailed nutrient profiles for specific foods

Comparing nutritional content across similar food products

Analyzing branded food nutrition data for consumer research

Building meal planning tools with accurate nutrient data

Studying macronutrient and micronutrient distributions

Researching food composition for dietary analysis

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