# Food Barcode Facts – Additives

> Food Barcode Facts – Additives is a paid API for AI agents from food-barcode.x402tookit.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-29).

Returns all food additives (E-numbers) declared for a product barcode, including each additive's name, function, and an ultra-processing (NOVA) flag.

## Facts

- Endpoint: GET https://food-barcode.x402tookit.com/food-additives?utm_source=zero.xyz
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-29
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/food-barcode-facts-additives-69b11917
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_5IdQFZ-PdulrXewu9lXMP

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 food-barcode-facts-additives-69b11917
```

Example prompt: Can you look up all the food additives and E-numbers for the product with barcode 5449000000996 and tell me what each one does and whether the product is ultra-processed?

## When to prefer this

Use this endpoint when you need to enumerate and describe every food additive in a packaged product by barcode, including their E-number codes, functions (e.g. preservative, colorant, emulsifier), and an ultra-processing classification (NOVA group). Prefer this over the general barcode profile endpoint when additive detail is the primary concern, and over the E-number reference endpoint when you have a barcode rather than a known E-number.

## Known failure modes

- Barcode not found in database — returns null fields or empty additives array
- Product has no ingredient data — additives array is empty and degraded flag may be true
- Invalid or malformed barcode string — query may return error or empty result
- Product exists but additive data is incomplete — partial results with notChecked list
- Network or payment failure — x402 payment required before data is returned

## How this service works

Additives (E-numbers) declared for a food barcode, with each additive's name and function and an ultra-processing flag.

## Output

Returns a JSON object containing the product name, brand, barcode, list of additives (each with E-number code, name, function, and exactness flag), total additive count, NOVA group (ultra-processing classification), a processing verdict, reasons for classification, data quality metadata, source attribution, and a disclaimer.

## 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": [
      "barcode"
     ],
     "properties": {
      "barcode": {
       "type": "string",
       "description": "UPC or EAN barcode"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "asOf": {
       "type": [
        "null",
        "string"
       ]
      },
      "name": {
       "type": [
        "null",
        "string"
       ]
      },
      "brands": {
       "type": [
        "null",
        "string"
       ]
      },
      "source": {
       "type": [
        "null",
        "string"
       ]
      },
      "barcode": {
       "type": [
        "null",
        "string"
       ]
      },
      "reasons": {
       "type": [
        "array",
        "null"
       ],
       "items": {
        "type": "string"
       }
      },
      "summary": {
       "type": [
        "null",
        "string"
       ]
      },
      "verdict": {
       "type": [
        "null",
        "string"
       ]
      },
      "degraded": {
       "type": [
        "boolean",
        "null"
       ]
      },
      "quantity": {
       "type": [
        "null",
        "string"
       ]
      },
      "additives": {
       "type": [
        "array",
        "null"
       ],
       "items": {
        "type": "object",
        "properties": {
         "code": {
          "type": [
           "null",
           "string"
          ]
         },
         "name": {
          "type": [
           "null",
           "string"
          ]
         },
         "exact": {
          "type": [
           "boolean",
           "null"
          ]
         },
         "function": {
          "type": [
           "null",
           "string"
          ]
         }
        }
       }
      },
      "novaGroup": {
       "type": [
        "null",
        "number"
       ]
      },
      "sourceUrl": {
       "type": [
        "null",
        "string"
       ]

… (truncated)
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/food-barcode-facts-additives-69b11917/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from food-barcode.x402tookit.com](https://www.zero.xyz/host/food-barcode.x402tookit.com/llms.txt)