Two retail giants. Two opposite answers to one question.
Should AI shopping agents be allowed to buy things for you?
Walmart says yes, with guardrails. Amazon says not on its site, not without its permission. If you run an online store, this fight matters. Let’s break down what’s real.
Quick answer
What did Walmart do? On October 21, 2026, Walmart announced the Walmart Agent Gateway. It’s an MCP server that lets approved AI agents search Walmart’s inventory and buy for shoppers.
Is it live? Partly. The Gateway is in beta. Agent Profiles, the customer-facing controls, are rolling out in November.
What is Amazon doing? Blocking third-party shopping agents and pushing its own tools, like Rufus, Alexa for Shopping and Buy for Me.
Why does it matter? Agents could change how people find and buy products, and who gets paid for ads.
What is the Walmart Agent Gateway?
It’s a direct lane for AI agents. Instead of scraping Walmart’s website, an approved agent connects through MCP, the Model Context Protocol, an open standard originally created by Anthropic. It can search products and make purchases for a customer.
It works for Walmart and Sam’s Club. No Walmart+ membership is needed.
Walmart says it already has partnerships and integrations with Meta’s Muse, ChatGPT, Gemini and other AI apps. Reports don’t confirm whether every ChatGPT or Gemini checkout is live today. Treat that part as rolling out.
How do the spending limits work?
This is the smart part.
- Each agent gets its own Agent Profile inside the customer’s Walmart account. Its purchases show up separately.
- The customer picks one of two modes: approve every purchase, or set a spending limit and let the agent buy within it.
- Agents never see card details and can’t add or change a payment method.
- The customer can delete the profile at any time.
- Walmart compares it to adding an authorized user on a credit card.
You’ll see $50, $100 and $200 mentioned online. Those were examples. The limit is whatever the customer sets, not a fixed menu.
What are Walmart’s rules for agents?
Walmart also published terms. Agents can’t act beyond the shopper’s intent. They can’t access payment information. They can only use the data they need for the task. Agents that break the rules will be blocked.
Walmart’s returns process still applies if an agent doesn’t do what you wanted.
What is Amazon doing?
Amazon’s approach is the opposite, but “slamming the door” needs some detail.
- Meta’s Muse: Amazon blocked it from Amazon.com in September. It said Muse appeared to access the store without authorization.
- Perplexity: Amazon sued over its Comet shopping agent. It won a court order in March. In August, the 9th US Circuit Court of Appeals overturned it. Amazon disagrees, and Reuters says the case is ongoing.
- Its own tools: Amazon promotes Rufus, Alexa for Shopping and Buy for Me.
Amazon told Reuters third-party agents should operate openly and respect service providers’ decisions about whether to take part.
Some summaries say Amazon forces shoppers to use only Rufus. I found no source saying that. Shoppers still browse and buy normally. What Amazon limits is outside agents buying for them.
Why is money at the center of this?
Ads. Walmart and Amazon are the two biggest retail media businesses. Emarketer estimates they hold 88% of a $74.4 billion US retail media market.
If an agent picks the product for you, it may skip the sponsored listings brands pay for. Morgan Stanley researchers said agents could make up 10% to 20% of US e-commerce spending by 2030.
Not everyone panics. Morningstar’s Brett Husslein called it “an evolution rather than an existential threat.” Amazon’s CEO said last week that third-party agents have had no meaningful effect on its ads yet.
What does this mean if you sell online?
Practical stuff, whether you sell on a marketplace or run your own store.
- Clean product data wins. Agents read titles, specs, prices and stock. Messy listings lose.
- Don’t block every bot. Blunt firewalls can lock out legitimate agents. Consider allowing identified ones.
- Open platforms may gain. Shopify already has a Shop MCP connection that lets compatible agents search and check out on its stores. Independent stores that accept agents may pick up shoppers Amazon shuts out.
- Expect low-ticket buys first. Spending limits suit repeat purchases like groceries. Bigger purchases will likely still need a human approval.
- Marketplace sellers should ask. It’s not confirmed whether Walmart Marketplace third-party items flow through the Gateway.
What we still don’t know
- When the Gateway leaves beta for everyone
- Which AI apps can actually complete checkout today
- How many shoppers will trust an agent with a spending limit
- How the Amazon v. Perplexity case ends
- Whether agent-driven shopping really grows as fast as forecast. Demand is unproven.
FAQ
What is the Walmart Agent Gateway?
It’s an MCP server that lets approved AI agents search Walmart’s inventory and make purchases on a customer’s behalf.
When did Walmart announce it?
October 21, 2026. The Gateway is in beta, and Agent Profiles roll out in November.
Can an AI agent see my card details at Walmart?
No. Agents never see card details and can’t add or change payment methods.
How do spending limits work?
You either approve every purchase, or set a spending limit and let the agent buy inside it. The $50, $100 and $200 figures were examples.
Does Amazon allow AI shopping agents?
Not third-party ones that haven’t been approved. Amazon blocked Meta’s Muse and is in a court fight with Perplexity. It promotes its own tools instead.
What is MCP?
MCP, the Model Context Protocol, is an open standard that lets AI apps connect to outside tools and data. Anthropic created it.
Is Amazon forcing shoppers to use Rufus?
No source I found says that. Amazon limits outside agents, but shoppers can still browse and buy normally.
Bottom line
Walmart is betting that controlled access beats blocking. Amazon is betting that owning the shopper beats sharing them.
Neither bet is proven. But the split is real, and it will shape how people shop with AI. If you sell online, get your product data clean and decide now how you’ll treat agents. The door is opening on some sites and slamming shut on others.
Sources
- TechCrunch: While Amazon blocks AI agents, Walmart rolls out the welcome mat
- Startup Fortune: Walmart opens checkout to AI shopping agents while Amazon keeps them out
- Reuters via The Star: AI shopping agents could threaten Amazon and Walmart’s ad business
- Ecommerce Paradise: Walmart opens to AI shopping agents as Amazon blocks them