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EAN / UPC / GTIN check

Validate a GTIN barcode number — EAN-8, UPC-A (12), EAN-13 or GTIN-14 — by the standard mod-10 check digit. Length selects the scheme.

Visit checkdigit.openverbs.com

Host	checkdigit.openverbs.com
Price	$0.002 per call
Network	Base
Paid endpoints listed	5
Calls, last 30 days*	10
Most unique payers on one endpoint (30 days)*	2
Last paid call*	2026-10-08
Tags	gtin validation, validate barcode number, ean upc check digit, upc validation, ean 13 checksum, imei validation, validate imei number, mobile device imei

* From the public x402 Bazaar index (snapshot 2026-10-18T04:07Z); reported by the facilitator, not measured by us.

Endpoints

URL	Method	Price
`https://checkdigit.openverbs.com/v1/ean` Validate a GTIN barcode number — EAN-8, UPC-A (12), EAN-13 or GTIN-14 — by the standard mod-10 check digit. Length…	POST	$0.002
`https://checkdigit.openverbs.com/v1/imei` Validate a 15-digit mobile device IMEI by its Luhn check digit. Spaces and hyphens are ignored.	POST	$0.002
`https://checkdigit.openverbs.com/v1/isbn` Validate an ISBN-10 (mod-11, trailing X allowed) or ISBN-13 (GTIN mod-10) book number. Length after removing…	POST	$0.002
`https://checkdigit.openverbs.com/v1/luhn` Validate a number by the Luhn (mod-10) algorithm — the scheme behind credit/debit card numbers and many IDs. Spaces…	POST	$0.002
`https://checkdigit.openverbs.com/v1/routing` Validate a 9-digit US ABA bank routing number by its weighted (3,7,1) mod-10 checksum. Spaces and hyphens are ignored.	POST	$0.002

Source: x402 Bazaar discovery API (Coinbase CDP) · Licence: Public discovery metadata; descriptions by each provider. Listed in x402 pay-per-call APIs. We list tools; we do not test, rate or endorse them.

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