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greeneris-data GTIN Barcode Validator
x402
greeneris-data GTIN Barcode Validator is a paid API for AI agents from data.greeneris.io, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-15).
Validates a GTIN barcode number (EAN-8, UPC-12, EAN-13, ITF-14) by checking its structure and GS1 mod-10 check digit offline
Price / call$0.001
Success—
StatusUnknown
How this service works
Offline validation of product barcode numbers: EAN-8, UPC-A, EAN-13 and GTIN-14, using the GS1 mod-10 weighted checksum. Catches corrupted GTINs in supplier catalogs before marketplace publication (Amazon/Google reject invalid GTINs). Query: ?gtin=4006381333931. Returns valid flag, detected format, GS1 member-org prefix and the computed check digit. Deterministic, cached 1 year.
Output
Returns a JSON object with the validated GTIN string, a boolean 'valid' field, the detected format (e.g. EAN-13), the GS1 prefix, the expected check digit, the computed check digit, and the source algorithm used (GS1 mod-10 offline structural check).
Example use cases
Bulk product catalog import validation
“We're importing 5,000 products from a new supplier and they've given us barcodes. Before we sync these to Amazon, can you quickly validate a sample batch of GTINs to make sure they're not corrupted or malformed? I need to know which ones have invalid check digits so we can reject them early.”
Warehouse receiving quality control
“Our warehouse team just scanned in a shipment of products using ITF-14 barcodes on the boxes. Can you verify that these barcode numbers are structurally valid and have the correct GS1 check digits? I want to catch any scanning errors or damaged labels before items hit the shelves.”
E-commerce listing error prevention
“We're building an automated system that prevents sellers from listing products with bad UPC codes. When someone uploads a new item, I need to instantly validate their barcode format and check digit offline — no database lookup needed, just tell me if it's a legitimate EAN-13 or UPC-12 before we let the listing go live.”
Technical details
Endpoint
GEThttps://data.greeneris.io/v1/logistics/gtin-checkWhen to prefer
Use this endpoint when you need a fast, cheap ($0.001), offline structural validation of a GTIN barcode — it checks format and GS1 mod-10 checksum without querying any product database. Prefer this over full product lookup APIs when you only need to confirm a barcode is well-formed. Not suitable if you need product name, brand, or description associated with the barcode.
Side effects
- Missing 'gtin' query parameter returns error
- Non-numeric or wrong-length barcode returns valid:false with format details
- HTTP 402 returned before payment is made via x402 protocol — agent must pay in USDC on Base and retry
- Malformed GTIN (wrong digit count) may return invalid rather than an error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"gtin": "4006381333931",
"valid": true,
"format": "EAN-13",
"source": "GS1 mod-10 check-digit algorithm (offline, structure + checksum only)",
"gs1_prefix": "400",
"check_digit": 1,
"computed_check_digit": 1
}
}Tags
x402
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