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USDA FDC Food Nutrition Comparator
x402
USDA FDC Food Nutrition Comparator is a paid API for AI agents from food.memoryapi.org, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-15).
Compare nutrition profiles of multiple foods side-by-side using their USDA FoodData Central (FDC) IDs.
Price / call$0.001
Success—
StatusUnknown
How this service works
USDA FoodData Central nutrition data API with x402 micropayments. Search foods, get full nutrition profiles, and compare multiple foods side-by-side.
Output
A side-by-side nutritional comparison of multiple foods identified by USDA FDC IDs, showing macronutrients (protein, fat, carbohydrates, calories), vitamins, and minerals for each food in a structured comparative format.
Example use cases
Example prompt
“Compare the nutrition side-by-side for chicken breast (FDC ID 171477), Atlantic salmon (FDC ID 175167), and firm tofu (FDC ID 172476) — I want to see macros, key vitamins, and minerals for all three at once.”
Technical details
Endpoint
GEThttps://food.memoryapi.org/x402/food/compareWhen to prefer
Use this endpoint when you need to compare nutrition across multiple foods simultaneously using their USDA FDC IDs. It is ideal when the user wants a side-by-side breakdown rather than individual lookups, saving multiple API calls. Prefer this over the single-food profile endpoint when comparing two or more options for dietary, fitness, or meal planning decisions.
Side effects
- Invalid or non-existent FDC ID returns an error or empty result for that item
- Fewer than two FDC IDs provided may result in a validation error
- Payment not processed (x402 payment required) results in 402 response
- Rate limiting or service unavailability returns 429 or 5xx errors
- FDC IDs for foods not in the USDA database return null data for those entries
Input
{
"ids": "171477,175167,172476"
}Output
{
"count": 3,
"foods": [
{
"id": 171477,
"fat": null,
"name": "Chicken, broilers or fryers, breast, meat only, cooked, roasted",
"brand": null,
"carbs": null,
"fiber": null,
"sodium": null,
"protein": null,
"calories": null
},
{
"id": 175167,
"fat": null,
"name": "Fish, salmon, Atlantic, farmed, raw",
"brand": null,
"carbs": null,
"fiber": null,
"sodium": null,
"protein": null,
"calories": null
},
{
"id": 172476,
"fat": null,
"name": "Tofu, raw, regular, prepared with calcium sulfate",
"brand": null,
"carbs": null,
"fiber": null,
"sodium": null,
"protein": null,
"calories": null
}
],
"source": "USDA FoodData Central",
"success": true,
"winner_by_protein": null,
"winner_by_calories": null
}Schema · Response
{
"example": {
"foods": [
{
"id": 173950,
"name": "Avocados",
"protein": 2,
"calories": 160
}
],
"success": true,
"winner_by_protein": "Chicken, breast",
"winner_by_calories": "Avocados"
}
}Tags
x402
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