# Saylor Innovations GS1 SSCC-18 Validator

> Saylor Innovations GS1 SSCC-18 Validator is a paid API for AI agents from saylorinnovations.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-30).

Validates a GS1 SSCC-18 logistics unit barcode by verifying its check digit and parsing its extension digit and serial reference components

## Facts

- Endpoint: GET https://saylorinnovations.com/api/logistics/sscc?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-30
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/saylor-innovations-gs1-sscc-18-validator-e13d3a41
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_6hyWTORjcKh6Aw0zy3P9G

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 saylor-innovations-gs1-sscc-18-validator-e13d3a41
```

Example prompt: Can you validate this SSCC-18 barcode for me — 003600029145813485 — and tell me if the check digit is correct and what the serial reference is?

## When to prefer this

Use this endpoint when you need to programmatically verify GS1 SSCC-18 barcodes in logistics, warehousing, or supply-chain workflows — especially when you need not just a pass/fail but also the parsed components (extension digit, serial reference, check digit details). It is purpose-built for SSCC-18 and follows the GS1 standard, making it more reliable than generic check-digit calculators for this specific barcode type.

## Known failure modes

- Input not exactly 18 decimal digits — returns invalid or HTTP error
- Non-numeric characters in code — validation fails
- Check digit mismatch — returns valid:false with both provided and expected check digits
- Missing required 'code' query parameter — likely HTTP 400 or 402 error
- Payment not sent — HTTP 402 payment required

## How this service works

GS1 SSCC-18 logistics-unit validator - check digit, payload and serial reference

## Output

Returns a JSON object containing a boolean validity flag, the original SSCC-18 code, the provided and expected check digits, the 17-digit payload, the extension digit, the serial reference, the check algorithm used, a GS1 standard reference string, and a scope note clarifying what the validation covers and excludes.

## 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": [
      "code"
     ],
     "properties": {
      "code": {
       "type": "string",
       "description": "required exactly 18 decimal digits (query)"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "json"
    },
    "example": {
     "type": "object",
     "required": [
      "valid",
      "sscc18",
      "expected_check_digit",
      "scope_note",
      "standard"
     ],
     "properties": {
      "valid": {
       "type": "boolean",
       "description": "True when the input passed validation"
      },
      "sscc18": {
       "type": "string"
      },
      "standard": {
       "type": "string",
       "description": "Standard the result follows"
      },
      "payload17": {
       "type": "string"
      },
      "scope_note": {
       "type": "string",
       "description": "What this data covers and what it leaves out"
      },
      "gtin14_form": {
       "type": "string",
       "description": "Gtin14 form"
      },
      "check_algorithm": {
       "type": "string",
       "description": "Check algorithm"
      },
      "extension_digit": {
       "type": "number",
       "description": "Extension digit"
      },
      "serial_reference": {
       "type": "string",
       "description": "Serial reference"
      },
      "expected_check_digit": {
       "type": "number",
       "description": "Expected check digit"
      },
      "provided_check_digit": {
       "type": "number",
       "description": "Provided check digit"
      }
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/saylor-innovations-gs1-sscc-18-validator-e13d3a41/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from saylorinnovations.com](https://www.zero.xyz/host/saylorinnovations.com/llms.txt)