Between October 5 and October 21, 2026, TikTok, Meta, Shopify, Google and Walmart opened or announced checkouts for agentic commerce, shopping with or by AI agents. Etsy tightened its rules on AI use in listings on October 22.
Etsy's October 22, 2026 rules bar AI-generated functional guides, like patterns, recipes and instructions, and bot-generated listings without any human involvement. For most products, listings now need at least one unedited photo of the actual item against a real background.
Walmart said on October 21, 2026 that Agent Profiles, launching in the next month, will let customers require approval for every purchase an AI agent makes or set a spending limit. Its terms say agents don't receive customers' payment-card information, and agents that don't follow the terms will be blocked from Walmart's site.
OpenAI's creative enhancements can adjust ChatGPT ad headlines and descriptions, resize images, optimize destination URLs and translate ad text, and the ads can run without requiring advertisers to review or approve each version. They will switch on by default for new and existing campaigns on October 29 or 30, 2026, depending on which OpenAI notice you read.
Google's Universal Cart is rolling out in the US in Search and the Gemini app. For stores, the first release of its Cart API only creates and transfers a cart; Google doesn't support updating or syncing it. Merchant Center onboarding needs an interest form and Google's selection.
From October 30, 2026, Meta's Commercial Terms authorize it to crawl pages associated with the products or services of businesses using Meta commercially. Meta cut “train” from the US text on October 16; legal experts told Nieman Lab the wording is still broad.
Shopify's Shop MCP lets any AI agent search its catalogue and pay with a signed-in shopper's Shop Pay. Shop's help page holds shoppers responsible for agent purchases within the permissions and budgets they set, even unexpected ones.
Meta named Shopify, Stripe, PayPal and Adyen for checkout inside its AI chats. In September, Amazon blocked Meta’s Muse agent from shopping on Amazon.com, Adweek reported.
TikTok says brands that sell through its new in-feed checkout stay the merchant of record. Salesforce tells its Commerce Cloud stores they own the customer relationship, and expects its rollout to begin in the first quarter of 2027.
The get_cart and update_cart tools on Shopify's Storefront MCP server reached their August 31 deprecation date. Agents that have not moved to the UCP Cart MCP will try to add items to a cart that no longer answers.
The Additional Scripts field on the Thank you and Order status pages stopped executing for stores on non-Plus plans on August 26. Orders keep flowing, so nothing looks wrong.
Meta has the Ad Library, Google has the Ads Transparency Center, TikTok has a Commercial Content Library for Europe. The AI answer surfaces have nothing.