# AgentRXI Nutrition Facts Lookup

> AgentRXI Nutrition Facts Lookup is a paid API for AI agents from agentrxi.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-15).

Returns USDA FoodData Central nutrition data (calories, protein, fat, carbs, fiber, sugar, sodium, minerals) for any food or branded product by name.

## Facts

- Endpoint: GET https://agentrxi.com/v1/nutrition?utm_source=zero.xyz
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agentrxi-nutrition-facts-lookup-907aec69
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_N79jySqUrl4x14hnhSAQ5

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 agentrxi-nutrition-facts-lookup-907aec69
```

Example prompt: What are the nutrition facts for a raw chicken breast — calories, protein, fat, and sodium?

## When to prefer this

Choose this endpoint when you need structured, authoritative USDA nutrition data for foods or branded products, including macros and micronutrients. Prefer it over general web search when you need machine-readable nutrition facts for logging, analysis, or dietary planning. Best when the user asks about calories, protein, fat, carbs, sugar, sodium, fiber, or minerals for a specific food item.

## Known failure modes

- Food not found in USDA database — returns empty results or minimal matches
- Ambiguous food name returns unrelated results — refine query for better accuracy
- Rate limit or payment failure — 402 response if USDC payment not attached
- Invalid or missing query parameter — 400 bad request
- Branded product not in USDA database — may return no results or generic equivalent

## How this service works

Nutrition facts (USDA FoodData Central): calories, protein, fat, carbs, fiber, sugar, sodium and key minerals for foods and branded products.

## Output

Returns a list of matching foods with their full USDA nutrition profile including calories, protein, total fat, carbohydrates, dietary fiber, sugars, sodium, and key minerals (e.g. calcium, iron, potassium) per serving. Results include branded and generic foods from the USDA FoodData Central database.

## 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": [
      "q"
     ],
     "properties": {
      "q": {
       "type": "string",
       "description": "Food"
      },
      "limit": {
       "type": "integer"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agentrxi-nutrition-facts-lookup-907aec69/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agentrxi.com](https://www.zero.xyz/host/agentrxi.com/llms.txt)