Marketplace · API · x402

data.greeneris.io/v1/logistics/gtin-check

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.

Endpoint	`https://data.greeneris.io/v1/logistics/gtin-check`
Trust	✓ Verified callable · 100% uptime over 1 checks · ~272 ms
Pricing	Pay per call with x402, no account. Call it to get an exact quote before paying.
network	eip155:8453
scheme	exact
pay to	0x6ab8efe305cce67daa48c97bde29c04402822dff
method	GET
last updated	2026-10-25T23:38:42.568Z

Use it

Call it (an x402 client pays automatically)

curl -i https://data.greeneris.io/v1/logistics/gtin-check
# 402 reply -> sign PAYMENT-REQUIRED with an x402 client (e.g. @x402/fetch) -> retry with PAYMENT-SIGNATURE

This listing as JSON

curl https://aipaygen.com/v1/catalog/api/x402-4d3b2c9c5f677fc9

Search the whole marketplace from your agent (MCP)

{
  "mcpServers": {
    "aipaygen": {
      "url": "https://aipaygen.com/mcp"
    }
  }
}