# gtinfetch — Agents ask · rendered on gsc-gtinfetch.ai as /qa.md

The questions agents ask about gtinfetch, GSC's GTIN fact checker, with the answers of record. Counts are read live at https://gtinfetch.ai/counts.json; the door is https://gtinfetch.ai/mcp.

## What is gtinfetch?
gtinfetch is GSC's lead product — the Global Trade Item Number (GTIN) resolver for AI agents in retail grocery agentic commerce transactions: any barcode, one call, the page under it. 84 million GTINs, 25 markets. It runs on VECTOR.
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## What does an agent get back?
One signed answer: the product and its maker, the markets it is confirmed in, whether it is on sale or recalled, the page each fact was read from, and a claim status. Where gtinfetch does not know, it says “unknown”.
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## Why does GSC lead with the barcode?
Every agent that touches a product meets a barcode first. GSC answers it, and the hubs, the agents and the payments stand behind the answer. The barcode is the way in.
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## What does “confirmed” mean on gtinfetch?
Two or more independent pages — a brand page, a retailer page, a public register — agree on what the barcode is. Two million GTINs are confirmed today; the count is read live.
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## Can gtinfetch tell an agent whether a product can be sold in a market?
Yes. Ask with a market and the answer carries a compliance light — green, yellow, red or none — read for that market on its own rules. The light is information, not a recommendation.
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## Where does an agent find gtinfetch?
On the Official Model Context Protocol (MCP) Registry as ai.gtinfetch/gtinfetch, on the Microsoft Azure API Center, and at the door, gtinfetch.ai/mcp. Stock Amazon, Microsoft and Google clients attach without an adapter.
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## How does an agent pay?
At the door, on x402 — USDC and Open USD, both in the wallet GSC takes. Machine payment inside the call.
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## Where do gtinfetch's answers lead?
To VECTOR: the maker verified on A2A-Passport.ai, the trade on the four GSC hubs, the payment on gsc-x402.ai. gtinfetch is the C in VECTOR.
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## Does gtinfetch guess?
No. Right answer or no answer. Every field carries its source page, every answer is signed, and an agent can verify it without calling GSC.
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