{
  "id": "A10",
  "url": "https://cartforagents.com/guides/showing-up-in-ai-shopping-carts",
  "title": "Showing up in AI shopping carts: what merchants can optimize at each step",
  "description": "The four steps from AI recommendation to completed order, and what a merchant can optimize at each one: facts, variants, price, shipping, policies and checkout settings.",
  "answer": "An AI cart purchase crosses four steps: the assistant recommends, an agent or platform builds a cart, the buyer authorizes payment, and the merchant's checkout executes the order. You can optimize the inputs each step reads: true facts, the right variant in stock, accurate price and shipping, policies, and the checkout settings each platform offers. Judge cart work by your orders by channel, because the order is the outcome a merchant can see.",
  "take": "Optimize for orders, not mentions. A product named a thousand times that fails at the variant or shipping step earns nothing, and the step you fully control, your own checkout, is the one to make flawless.",
  "summary": "Between an assistant naming your product and an order landing in your admin sit three more steps, and the buyer, not the agent, holds the most important one. Here's what you can tune at each step, and what proves a product made it into a cart.",
  "claims": [
    {
      "text": "Shopify says that in agent carts and checkout the merchant always remains the merchant of record. Its cart tools accept unauthenticated requests so an agent can estimate totals and share a cart before collecting credentials, while its checkout tools require authentication or a signed request.",
      "source_title": "Shopify: Carts and checkout for agents",
      "source_url": "https://shopify.dev/docs/agents/carts-and-checkout",
      "source_date": "2026-10-27",
      "method": "documented",
      "limitation": "Describes Shopify's agent tools, not any assistant's implementation."
    },
    {
      "text": "Shopify's catalog returns a checkout link for each variant that takes the buyer to the merchant's checkout with items pre-selected; these cart links are scoped to a single merchant. Checkout sessions that are incomplete, need escalation or are ready to complete include a link that hands the buyer to the merchant's storefront.",
      "source_title": "Shopify: Carts and checkout for agents, Cart permalinks and Checkout MCP tools",
      "source_url": "https://shopify.dev/docs/agents/carts-and-checkout",
      "source_date": "2026-10-27",
      "method": "documented",
      "limitation": "Developer documentation; it does not say which route a given assistant uses."
    },
    {
      "text": "In Shopify's browser-based checkout tools, the agent places the order only after the buyer confirms it. The tools are not registered for some checkouts, including the standard three-page checkout unless the buyer uses Shop Pay, B2B checkout, embedded checkout and checkouts with merchandise from another shop; the buyer completes those on the checkout page.",
      "source_title": "Shopify: Carts and checkout for agents, Checkout WebMCP tools",
      "source_url": "https://shopify.dev/docs/agents/carts-and-checkout",
      "source_date": "2026-10-27",
      "method": "documented",
      "limitation": "Applies only to agents operating in the buyer's browser."
    },
    {
      "text": "Google's UCP native checkout guide says a user, optionally with an agent, adds items to a checkout session, then the agent hands control to a Google interface where the user alone fills in sensitive fulfillment and payment details and submits the order. The session moves through incomplete, ready_for_payment, ready_for_complete and completed.",
      "source_title": "Google UCP guide: Native checkout overview",
      "source_url": "https://developers.google.com/merchant/ucp/guides/overview/native-checkout",
      "source_date": "2026-10-27",
      "method": "documented",
      "limitation": "Google says it will initially render the interface, with plans for more agentic experiences later."
    },
    {
      "text": "Google's UCP checkout requires a Merchant Center account in good standing with products approved for free listings, return policies and customer support information. A product is eligible only when native_commerce(checkout_eligibility) is set to TRUE (missing means FALSE), and categories including subscriptions, personalized goods, used, refurbished and final-sale items, pre-orders and items needing special shipping are ineligible.",
      "source_title": "Google UCP guide: Prepare your Merchant Center account",
      "source_url": "https://developers.google.com/merchant/ucp/guides/merchant-center",
      "source_date": "2026-10-27",
      "method": "documented",
      "limitation": "Requirements for Google's checkout only; they do not govern whether a product appears in results."
    },
    {
      "text": "Google says UCP-powered checkout is available for select merchants, keeps the merchant as seller of record, and currently uses card numbers stored in Google Wallet. Google's pages differ on markets: one help page says it applies to products with eligibility in the United States, Canada and Australia, while the onboarding page says the Merchant Center hub is rolling out gradually in the US, with Australia and Canada to follow next year.",
      "source_title": "Google Merchant Center Help: About the Universal Commerce Protocol (UCP) and UCP-powered checkout",
      "source_url": "https://support.google.com/merchants/answer/16837055?hl=en",
      "source_date": "2026-10-27",
      "method": "documented",
      "limitation": "The onboarding timeline is on https://support.google.com/merchants/answer/16992327 and is an announced rollout, not availability for any store."
    },
    {
      "text": "OpenAI's product feed specification says checkout requires a separately enabled integration and that setting is_eligible_checkout does not complete checkout onboarding; is_eligible_search set to false disables both search and checkout eligibility, and search eligibility does not guarantee display. Seller privacy policy and terms URLs are conditionally required for checkout.",
      "source_title": "OpenAI Commerce: Products (file upload feed reference), OpenAI flags and Checkout",
      "source_url": "https://developers.openai.com/commerce/specs/file-upload/products",
      "source_date": "2026-10-27",
      "method": "documented",
      "limitation": "Applies to direct feeds, which require OpenAI's approval; Shopify stores reach ChatGPT through Shopify Catalog by default."
    },
    {
      "text": "OpenAI's help page says ChatGPT may show an Instant Checkout option for some eligible products and merchants, while OpenAI's merchant page says it is moving away from a standalone Instant Checkout experience and that purchases are completed on merchant-owned websites or apps.",
      "source_title": "OpenAI Help Center: Shopping with ChatGPT Search; OpenAI: Power product discovery in ChatGPT",
      "source_url": "https://chatgpt.com/merchants/",
      "source_date": "2026-10-27",
      "method": "documented",
      "limitation": "The two pages conflict; the help page is https://help.openai.com/en/articles/11128490-shopping-with-chatgpt-search. We do not resolve the conflict."
    },
    {
      "text": "Shopify's agentic storefront settings include direct checkout: when on for relevant channels, customers can buy directly in their conversation in an AI channel; when off, they are redirected to the online store. The default setting turns it on where supported. Shopify's per-channel reports cover sales, orders, online store sessions and conversion.",
      "source_title": "Shopify Help Center: Managing agentic storefronts",
      "source_url": "https://help.shopify.com/en/manual/online-sales-channels/agentic-storefronts/agentic-home",
      "source_date": "2026-10-27",
      "method": "documented",
      "limitation": "The page lists no cart metric, and does not say how visits are attributed to an AI channel."
    },
    {
      "text": "Shopify says ChatGPT acts as a discovery-focused referrer and ChatGPT users complete their purchase on the merchant's online store checkout, while Google AI Mode and Gemini, Microsoft Copilot and Meta can use a Shopify-powered direct checkout when activated; on the Agentic plan, direct checkout is deactivated by default. Shopify says Google AI Mode and Gemini direct checkout is rolling out gradually to customers in the United States, Canada and Australia.",
      "source_title": "Shopify Help Center: Shopify agentic storefronts; Selling on Google AI Mode and Gemini",
      "source_url": "https://help.shopify.com/en/manual/online-sales-channels/agentic-storefronts",
      "source_date": "2026-10-27",
      "method": "documented",
      "limitation": "The Google channel details are on https://help.shopify.com/en/manual/online-sales-channels/agentic-storefronts/google. Rollout means availability for a given store is not documented."
    },
    {
      "text": "In 1,620 Shopify Catalog results from 162 unpersonalized searches on October 26, 2026, every returned variant carried a checkout link to a cart on the seller's own storefront, and every one was flagged not eligible for native checkout.",
      "source_title": "Cart for Agents: Native checkout in a Catalog snapshot",
      "source_url": "https://cartforagents.com/research/ucp-catalog-native-checkout-research",
      "source_date": "2026-10-26",
      "method": "observed",
      "limitation": "Result occurrences, not distinct products, with no country, currency or buyer set. A flag on one variant in one context is not a store's checkout status in any assistant."
    }
  ],
  "sources": [
    {
      "title": "Shopify: Carts and checkout for agents",
      "url": "https://shopify.dev/docs/agents/carts-and-checkout",
      "accessed": "2026-10-27"
    },
    {
      "title": "Shopify Help Center: Managing agentic storefronts",
      "url": "https://help.shopify.com/en/manual/online-sales-channels/agentic-storefronts/agentic-home",
      "accessed": "2026-10-27"
    },
    {
      "title": "Shopify Help Center: Shopify agentic storefronts",
      "url": "https://help.shopify.com/en/manual/online-sales-channels/agentic-storefronts",
      "accessed": "2026-10-27"
    },
    {
      "title": "Shopify Help Center: Selling on Google AI Mode and Gemini",
      "url": "https://help.shopify.com/en/manual/online-sales-channels/agentic-storefronts/google",
      "accessed": "2026-10-27"
    },
    {
      "title": "Google UCP guide: Native checkout overview",
      "url": "https://developers.google.com/merchant/ucp/guides/overview/native-checkout",
      "accessed": "2026-10-27"
    },
    {
      "title": "Google UCP guide: Prepare your Merchant Center account",
      "url": "https://developers.google.com/merchant/ucp/guides/merchant-center",
      "accessed": "2026-10-27"
    },
    {
      "title": "Google Merchant Center Help: About the Universal Commerce Protocol (UCP) and UCP-powered checkout",
      "url": "https://support.google.com/merchants/answer/16837055?hl=en",
      "accessed": "2026-10-27"
    },
    {
      "title": "Google Merchant Center Help: How to onboard to the UCP integration hub in Merchant Center",
      "url": "https://support.google.com/merchants/answer/16992327?hl=en",
      "accessed": "2026-10-27"
    },
    {
      "title": "OpenAI Commerce: Products (file upload feed reference)",
      "url": "https://developers.openai.com/commerce/specs/file-upload/products",
      "accessed": "2026-10-27"
    },
    {
      "title": "OpenAI Help Center: Shopping with ChatGPT Search",
      "url": "https://help.openai.com/en/articles/11128490-shopping-with-chatgpt-search",
      "accessed": "2026-10-27"
    },
    {
      "title": "OpenAI: Power product discovery in ChatGPT",
      "url": "https://chatgpt.com/merchants/",
      "accessed": "2026-10-27"
    },
    {
      "title": "Cart for Agents: Native checkout in a Catalog snapshot",
      "url": "https://cartforagents.com/research/ucp-catalog-native-checkout-research",
      "accessed": "2026-10-27"
    }
  ],
  "limitations": [
    "Checkout programs and agent tools change quickly. Every documented statement here was checked on 2026-10-27; re-check before acting.",
    "The boundary map is our proposed way to organize the documentation. It is not a platform standard, and no platform documents how much any merchant input affects whether a cart is built.",
    "We found no documentation, in the pages we read, of a report that shows merchants carts built by an AI agent. That is \"not documented\", not proof that no such report exists.",
    "Nobody outside the platforms can see recommendations, carts or authorizations inside an assistant. We cannot, and we do not claim to.",
    "OpenAI's help page and merchant page disagree about Instant Checkout. Google's checkout is for select merchants and its onboarding is rolling out by country.",
    "The catalog observation is one unpersonalized snapshot with no country or buyer set."
  ],
  "related": [
    "https://cartforagents.com/guides/agentic-commerce",
    "https://cartforagents.com/guides/ai-product-discovery",
    "https://cartforagents.com/guides/agentic-commerce-strategy",
    "https://cartforagents.com/guides/agent-ready-product-data",
    "https://cartforagents.com/guides/shopify-agentic-storefronts",
    "https://cartforagents.com/research/ucp-catalog-native-checkout-research"
  ],
  "published": "2026-10-27",
  "updated": "2026-10-27",
  "checked": "2026-10-27",
  "kind": "guide"
}