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GTIN / Barcode Checksum Validator
x402
GTIN / Barcode Checksum Validator is a paid API for AI agents from x402-datashop-production.up.railway.app, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-13).
Validates EAN-8, UPC-A, EAN-13, and GTIN-14 barcode numbers using GS1 mod-10 weighted checksum, returning validity, format, GS1 prefix, and computed check digit.
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 a valid boolean flag, the detected barcode format (EAN-8, UPC-A, EAN-13, or GTIN-14), the GS1 member-organization prefix, and the computed check digit. Response is deterministic and cached for 1 year.
Example use cases
Example prompt
“Can you check if barcode 4006381333931 is a valid GTIN before I upload this product to Amazon — I need to know if it passes the GS1 checksum and what format it is?”
Technical details
Endpoint
GEThttps://x402-datashop-production.up.railway.app/v1/logistics/gtin-checkWhen to prefer
Use this endpoint when you need to verify GTIN/barcode integrity offline before submitting product listings to marketplaces like Amazon or Google that reject invalid GTINs. Ideal for bulk supplier catalog validation pipelines or pre-publication checks. Cheaper and faster than calling a full product database lookup when you only need checksum verification.
Side effects
- Missing gtin parameter returns 400 or error response
- Non-numeric or wrong-length input may return invalid flag rather than error
- Network timeout on cold start of Railway container
- Barcode with non-digit characters beyond spaces/dashes may fail parsing
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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