# fittings USDA Food Nutrients Lookup

> fittings USDA Food Nutrients Lookup is a paid API for AI agents from fittings.sh, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-15).

Returns full nutrition facts for a single FoodData Central item by FDC ID, including every reported nutrient with amount and unit, serving size, and ingredients.

## Facts

- Endpoint: GET https://fittings.sh/v1/usda/food-nutrients
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/fittings-usda-food-nutrients-lookup-4c757ce2
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap__rNA_jwY7LC6aTMLK-o8t

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability fittings-usda-food-nutrients-lookup-4c757ce2
```

Example prompt: Can you pull the full nutrition facts for the USDA FoodData Central item with FDC ID 747448 — I need every nutrient, the serving size, and the ingredients list.

## When to prefer this

Choose this endpoint when you have a specific FDC ID (e.g., from a prior food-search call) and need comprehensive nutrition data — all nutrients, serving size, and ingredients — rather than just a summary. Prefer it over generic nutrition APIs when USDA FoodData Central data provenance is required or when complete micronutrient coverage matters.

## Known failure modes

- Invalid or non-existent fdcId returns an error or empty result
- fdcId not provided returns a 400 validation error
- Some food items may have sparse nutrient data if not fully reported by USDA
- Rate limiting or payment failure (x402) may block the request

## How this service works

Full nutrition facts for one FoodData Central item: every reported nutrient with its amount and unit, plus serving size and ingredients.

## Output

A structured response containing every nutrient reported for the food item (name, amount, unit), the serving size information, and the full ingredients list as provided by USDA FoodData Central.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "fdcId"
     ],
     "properties": {
      "fdcId": {
       "type": "number",
       "description": "FoodData Central id, from food-search"
      }
     }
    }
   },
   "additionalProperties": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/fittings-usda-food-nutrients-lookup-4c757ce2/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from fittings.sh](https://www.zero.xyz/host/fittings.sh/llms.txt)