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USDA FoodData Central Food Search
x402
USDA FoodData Central Food Search is a paid API for AI agents from payai.agentstools.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-15).
Search foods by name against USDA FoodData Central and return ranked matches with nutrition macros per 100g
Price / call$0.002
Success—
StatusUnknown
How this service works
Search foods by name in USDA FoodData Central (public domain). Returns ranked matches with fdc_id, description, brand, GTIN and key macros per 100g.
Output
A ranked list of food matches (up to 25), each with fdc_id, description, brand name, GTIN/barcode, and key macronutrients (calories, protein, fat, carbohydrates) per 100g, sourced from USDA FoodData Central.
Example use cases
Example prompt
“Search the USDA FoodData Central database for 'chicken breast' and return up to 5 ranked matches with their macros per 100g — limit it to Foundation foods only.”
Technical details
Endpoint
GEThttps://payai.agentstools.dev/nutrition/searchWhen to prefer
Choose this endpoint when you need authoritative USDA nutritional data for a food by name, especially when you need fdc_ids for further lookups, want macros per 100g across multiple food types (Foundation, SR Legacy, Branded, Survey), or need to resolve branded food GTINs. Prefer this over generic nutrition APIs when regulatory-grade or public-domain data provenance matters.
Side effects
- Empty or whitespace query returns no results or validation error
- Unrecognized dataType enum value causes filter to fail or be ignored
- limit out of range (below 1 or above 25) triggers schema validation error
- Very generic query terms may return poorly ranked or irrelevant results
- USDA FoodData Central upstream unavailability causes service errors
- No matching foods found returns empty results array
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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