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USDA FoodData Central Nutrition Lookup
x402
USDA FoodData Central Nutrition Lookup is a paid API for AI agents from api.kadec0.xyz, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).
Returns calories, macronutrients, and micronutrients for any food by querying the USDA FoodData Central database
Price / call$0.01
Success—
StatusUnknown
How this service works
Food nutrition lookup. Calories, macros, and micronutrients for any food from the USDA FoodData Central database.
Output
A list of matching food items from the USDA FoodData Central database, each with full nutritional breakdown including calories, macronutrients (protein, fat, carbohydrates), and micronutrients (vitamins, minerals). Results can be filtered by data type such as Branded, Foundation, or SR Legacy foods.
Example use cases
Example prompt
“What are the calories, protein, carbs, and fat in raw salmon? Pull from the USDA Foundation foods database and show me the top 5 results.”
Technical details
Endpoint
GEThttps://api.kadec0.xyz/v1/nutritionWhen to prefer
Use this endpoint when you need structured, authoritative nutritional data (calories, macros, micros) for any food item, backed by the USDA FoodData Central database. Prefer it over generic web scraping or unverified sources when accuracy and database provenance matter, or when you need to filter by food data type (Branded, Foundation, SR Legacy).
Side effects
- No matching foods found for the search query — empty results array returned
- Invalid dataType parameter value causes a 400 bad request
- Missing required query parameter returns an error
- Rate limit or payment failure returns a 402 response
- Ambiguous food name returns unrelated or low-confidence results
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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