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GTIN / EAN / UPC Barcode Check-Digit Validator
x402
GTIN / EAN / UPC Barcode Check-Digit Validator is a paid API for AI agents from api.aventtech.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-09).
Validates GTIN-8, GTIN-12 (UPC-A), GTIN-13 (EAN-13), and GTIN-14 barcodes using GS1 MOD-10 check-digit algorithm and identifies the barcode type.
Price / call$0.01
Success—
StatusUnknown
How this service works
GTIN / EAN / UPC barcode check-digit validation (GS1 mod-10) for GTIN-8/12/13/14 with type identification.
Output
Returns whether the GTIN passes GS1 MOD-10 check-digit validation, the barcode type (GTIN-8, GTIN-12/UPC-A, GTIN-13/EAN-13, or GTIN-14), and likely whether the check digit itself is correct.
Example use cases
Validate scanned product barcodes
“I just scanned a bunch of barcodes from products in our warehouse and I want to make sure they're all structurally valid before importing them into our inventory system. Can you check each one and flag any that fail GS1 validation?”
Pre-screen barcodes before catalog listing
“Before I submit these product UPC codes to our e-commerce catalog, can you verify that each barcode is a valid GTIN and tell me what type they are so I can catch any typos or bad data upfront?”
Identify unknown barcode format
“I have a product code that was entered manually and I'm not sure if it's a UPC-A, EAN-13, or some other GTIN format. Can you validate it and tell me exactly what type of barcode it is?”
Technical details
Endpoint
GEThttps://api.aventtech.com/validate/gtin?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need lightweight, fast, purely structural GS1 MOD-10 check-digit validation of a barcode without needing product database lookup. It is ideal for input sanitization, data entry validation, or pre-processing barcodes before querying a product database. Prefer this over payment-card or IBAN validators — those are sibling endpoints on the same host for different number formats.
Side effects
- Non-numeric characters in the GTIN input cause a validation error
- GTIN length not matching any of 8, 12, 13, or 14 digits returns an invalid format error
- Empty or missing gtin query parameter returns a 400 bad request
- Network timeout or service unavailability returns a 5xx error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"kind": "GTIN-13/EAN-13",
"valid": true
}
}Tags
x402
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