Agentic Commerce Guide Cover

AI Shopping: is your catalogue ready for the agents?

A year ago, shoppers who arrived from an AI assistant converted worse than everyone else. Today they convert better, and they generate more revenue per visit than any other channel. AI Shopping stopped being window-shopping. This Lengow guide is a seller’s playbook for the shift: how ChatGPT Shopping and Google’s AI surfaces read your catalogue, how advertising inside AI platforms works before it reaches your market, and how the Model Context Protocol (MCP) lets agents act on your store rather than just recommend it. One asset carries all three: your product feed.

What you’ll discover in this guide:

  • Get seen, the AI-ready feed: the six attributes Google’s Merchant Center now recognises, and the ChatGPT spec that OpenAI rebuilt overnight in July 2026 (14 attributes renamed, 4 removed, 14 added). What “AI-ready” means in practice, line by line.

  • Get chosen, advertising inside AI: why ChatGPT Ads look nothing like the auctions you run on Google or Meta, the US-to-Europe rollout timeline, and how to use the waiting time before the auction opens in your market.

  • Get bought, agentic operations: why MCP is the “USB-C of AI commerce”, how 5.6 million Shopify stores became agent-ready by default in March 2026, and where autonomous checkout actually stands today.


In this guide we explain:

  • What changes when an agent reads your catalogue instead of a person: the feed attributes that decide whether you appear in an AI answer at all, and why titles, variants and return policies now matter as much as price.
  • How the three moves connect: get seen (an AI-ready feed), get chosen (advertising inside AI platforms), get bought (agentic operations through MCP), all running on the same product feed.
  • What to prepare now versus what to watch: the calls that are safe to make today, and the standards still fighting it out (native checkout, competing protocols) that you shouldn’t bet a strategy on.

This guide is for:

  • E-commerce and feed managers who own the product catalogue and need it readable by ChatGPT, Gemini and Google AI Mode.
  • Marketplace and channel managers deciding where to expand as AI surfaces open, market by market.
  • Performance and paid-media teams weighing ChatGPT Ads before the auction reaches Europe, and preparing the feed and first-party data it will need.
  • Heads of digital and e-commerce directors setting the agentic-commerce roadmap for the next two years.