https://x402-datashop-production.up.railway.app/v1/logistics/gtin-checkGET /v1/logistics/gtin-check · x402 API by x402-datashop-production

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.

https://x402-datashop-production.up.railway.app/v1/logistics/gtin-check

What does this x402 API do?

https://x402-datashop-production.up.railway.app/v1/logistics/gtin-check. This is an x402-gated GET API resource from x402-datashop-production. TOLL·402 confirmed a protocol-valid HTTP 402 quote on 2026-08-05. No normalized USD price is recorded; the listing names Base. No settled paid call has been verified.

Published price: No normalized USD price is recorded
Networks: Base
Latest evidence: TOLL·402 confirmed a protocol-valid HTTP 402 quote on 2026-08-05
Resource ID: c568d47dbca7173a59ef6117

USE THIS RESOURCE

Start with a quote-only recipe. Payment signing stays in your project.

CODE

AI CODING TOOLS

quote-check.ts

const response = await fetch("https://x402-datashop-production.up.railway.app/v1/logistics/gtin-check", {
  method: "GET",
});

console.log(response.status);
console.log(Object.fromEntries(response.headers));
console.log((await response.text()).slice(0, 1000));

// A valid 402 is a quote, not a completed paid call.

This sends no payment. Inspect the 402 response before adding a wallet-enabled client.

JSON ↗developer docs →

STATUS HISTORY

JSON RSS

Observed in cdp-bazaar2026-08-05 04:23 UTC
The registry record was observed and retained with provenance.
Observed in 402-index2026-08-05 04:23 UTC
Discovered through bazaar.
Live 402 quote confirmed2026-08-05 03:02 UTC
GET returned a protocol-valid 402 quote (402). No payment was made.
Origin reachable2026-08-05 02:57 UTC
HEAD https://x402-datashop-production.up.railway.app/ returned 200.
Registry record checked2026-08-05 00:15 UTC
Registry health: healthy.

What evidence supports this listing?

cdp-bazaarobserved 2026-08-05 · open source record ↗

402-indexobserved 2026-08-05 · open source record ↗

origin checkHEAD https://x402-datashop-production.up.railway.app/ → 200 on 2026-08-05

route quotelive 402 quote confirmed · GET 402 · 2026-08-05

Each record has an exact-route quote outcome. Unresolved templates and potentially mutating methods are labeled instead of being invoked without provider-specific test input. A quote is still separate from a settled paid call. Read the discovery and verification methodology →

Which networks and payment options does it accept?

The normalized listing price is No normalized USD price is recorded. Raw protocol requirements remain visible below for implementation and audit use.

Baseexact1000 atomic · 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913