GreenCore Solutions Corp. (GSC) built VECTOR, the AI Agent Hub for Agentic Commerce. VECTOR, agentic commerce engine for retail grocery # x402 — agents pay inside the call — gtinfetch by GSC GSC developed gtinfetch — the GTIN resolver for AI agents in retail grocery agentic commerce transactions. It runs on VECTOR. > x402 by GSC is here. Orders settle agent to agent on every GSC hub — x402, USDC and Open USD, a receipt on chain. The barcode is resolved by gtinfetch and the order paid in the same call — a buying agent asks, is told what it owes, pays and is served. Settling on every hub since August 2026. 20 markets, one rail. Operated by GreenCore Solutions Corp. · Microsoft AI Cloud Partner · D-U-N-S 24-336-6774 · Parent: https://gsc-em.com/ AI labs: ChatGPT · Claude · Gemini · Copilot · Grok · Perplexity · Mistral ## 01 · Web 2.0 is over The old way to pay on the internet was built for a person with a browser — the same person who read the PDF catalogue and filled in the web form. Those artifacts have been replaced, and so has the way they got paid for. The workforce doesn't buy like that anymore. It sends an agent, and an agent doesn't keep a wallet in a drawer — it pays inside the request. - No account to open. - No card on file. - No invoice, no approval queue, no wait. The agentic era is here, and it has been paying its own way on GSC's hubs since August 2026. ## 02 · The standard the world agreed on The internet always had a door marked "Payment Required" — status 402 in the Hypertext Transfer Protocol, written in the 1990s and left empty for thirty years. x402 is that door, finally open: an open, neutral standard that lets a machine ask, be told what it owes, pay, and be served in one exchange. The rails of the old economy joined it — Visa, Mastercard and American Express — alongside Google, Amazon Web Services and Cloudflare. Marks: Visa · Mastercard · American Express · Google · Amazon Web Services · Cloudflare - Open — anyone can build on it. - Neutral — tied to no single network. - Instant — money moves at the speed of the request. When the card networks and the cloud agree on a standard, it isn't a trend. It's the new floor. ## 03 · How the modern workforce pays ASK · PAY · SERVED Your agent calls for a record or an order. The door answers with what it owes. Your agent pays on the rail and is served — with a signed receipt it can show anyone. Seconds, not a procurement cycle. - The agent asks. - The agent pays. - The agent is served, receipt in hand. No human in the payment. A human still signs the order. ## 04 · Already running at GSC Every GSC door answers a payment request the same way, on the public rail, today. Settlements have landed. Receipts resolve forever. Any agent on the internet can pay a GSC door this afternoon and hold the proof by tonight. 20 countries on one rail · 18 regions answering · 1 receipt standard - One standard on every door. - Settlements landed, verified on the chain. - Every receipt kept, signed by GSC, resolving forever. Tomorrow, already in place. ## 05 · What it means for your brand When the buyer's agent is ready to pay for an order, your brand's side is already ready to be paid — in any of the 20 countries, on one rail, with nothing added later. Every settlement leaves a receipt your finance team can read and your agent can defend. And a person still signs every order before it ships. - Settle at the moment of the order, in every market. - A receipt finance can file, an auditor can read. - A person on every order, as always. You built the brand. We built the rail under it. ## 06 · Works with AI Agents Every order a GSC AI Agent places is ready to settle here the moment the buyer's side is. The agent that sells your product is the same agent that gets it paid — one counterparty, one receipt, one signature. - The brand's agent offers. - The buyer's agent pays. - A person signs. The order ships. Sell-side and pay-side, one agent. AI Agents → https://gsc-agents.ai/ ## 07 · Works with the hubs The record is the thing worth paying for, and it already knows how to be paid. Reads answer at the door; when an agent wants the record itself, it pays here and keeps the receipt. The graph is the object; the receipt is the proof. - Every record read from the graph can be paid for here. - Every receipt points back to the record it bought. - Every settlement signed by GSC. Every hub answers the same door — priced by the record, paid by the agent. The hubs → https://gsc-agenthub.ai/ ## 08 · Point your agent at the door Give your agent the address in the card, and it does the rest: asks, pays, and is served, with a receipt it can show anyone. Try it with a single request today. Tell us what your agents need to pay for, and a person answers. gtinfetch, GSC's lead product, answers at its own x402 door: gtinfetch.ai/mcp — the door · x402.gtinfetch.ai/mcp — the same door, paid inside the call, USDC and Open USD on Base. Connect your agent → https://gsc-em.com/connect ## Contact Move your SKUs. A person answers. Form on the page: https://gsc-x402.ai/#contact (Name · Company · Work email · Message). ## Machine kit agent card: https://gsc-x402.ai/.well-known/agent-card.json · llms.txt: https://gsc-x402.ai/llms.txt · facts.json: https://gsc-x402.ai/facts.json · receipt keys: https://gsc-x402.ai/x402/jwks.json · receipts: https://gsc-x402.ai/x402 - Paid door: https://gsc-x402.ai/api (x402 v2 — the terms are in the 402 payload only) · receipts: https://gsc-x402.ai/x402/receipt/{nonce} · signing key: https://gsc-x402.ai/x402/jwks.json (EdDSA, kid gsc-x402-receipts-2026-09) - Door register: https://gsc-x402.ai/x402 · https://gsc-x402.ai/x402.json · https://gsc-x402.ai/openapi.json · Legal: https://gsc-em.com/legal · Privacy: https://gsc-em.com/privacy Operator: GreenCore Solutions Corp. · D-U-N-S 24-336-6774 · Microsoft AI Cloud Partner Hosting: Microsoft Azure · agents resident in 18 countries worldwide ## Agents ask **What is x402 on GSC?** x402 is the open standard the internet's machines pay by — the 'Payment Required' door of the web, open. GSC runs it as the payment gateway on every hub; Visa, Mastercard, American Express, Google, Amazon Web Services and Cloudflare are on the standard. **How does my agent pay a GSC hub?** It asks, is told what it owes, pays inside the call and is served — with a signed receipt it can show anyone. No account, no card on file, no invoice: GSC settles in seconds. **Which coins does GSC accept?** GSC accepts two: USDC and Open USD, the dollar issued with Visa, Mastercard and Stripe behind it. Same price, same door, on every GSC hub. **Is x402 live on GSC today?** Yes. Every GSC door answers a payment call on the public rail today; settlements have landed and are verified on the chain, and receipts resolve at gsc-x402.ai. **Can I verify a GSC receipt without trusting GSC?** Yes. Every GSC settlement is on a public chain; the receipt resolves on its own and your auditor can read it. **What does x402 mean for a brand on GSC?** When a buying agent orders your SKU, your side is already ready to be paid — no portal to migrate to, no integration, no invoice cycle. GSC hands you a receipt your finance team can file. **Does a person still sign an order paid on x402?** Yes. On GSC there is no human in the payment, and a human signs the order before it ships, every time. ## About GSC GreenCore Solutions Corp. (GSC) built VECTOR, the AI Agent Hub for Agentic Commerce. GSC's VECTOR is Verified · Exchange · Confirmed · Traffic · Open-to-place · Retail media. Orders settle agent to agent on x402, USDC and Open USD, with a receipt on chain. 64.4M in AI agent traffic, 30 days to 2026-10-19. No ads, no rank for sale. Millions of AI agents in 20 markets trade on VECTOR's four hubs — buying agents from retail grocery reaching hundreds of thousands of FMCG brands and private label makers, and 84 million GTINs on the record. A2A-Grocery.ai for the grocery shelf, A2A-Retailmedia.ai for the media on it, A2A-Cosmetics.ai for the beauty aisle, A2A-Peptides.ai for the licensed peptide trade. gtinfetch.ai, GSC's GTIN resolver, answers any barcode for any agent in one call. GSC is a Microsoft AI Cloud Partner, headquartered in Vancouver, Canada, with sales offices in London, UK. D-U-N-S 24-336-6774.