Fahad Manzur
Amazon has blocked Meta’s Muse AI agent from shopping on Amazon.com, telling users that continued access by an unauthorized AI agent breaks the Conditions of Use they agreed to. Within a day Shopify took the opposite position and partnered with Meta so Muse can browse Shopify stores and pay through Shop Pay, Shopify’s one-tap checkout. That leaves two of the largest online retail platforms on opposite sides of one question: can an AI agent shop for a person without the store’s permission?
Why Amazon shut the door
Amazon told GeekWire that Meta never asked permission for Muse to use its store. It also said the agent does not identify itself when it browses, and that it appears to capture and store customer credentials. Amazon’s spokesperson said shopping agents “should operate openly and respect service provider decisions” about whether to take part. From Sunday night, Muse users trying to buy on Amazon saw a pop-up warning instead of a cart.
Meta launched Muse on September 8 as a personal agent that carries out multi-step tasks across email, calendar, payments and shopping. Meta has said the agent cannot see people’s passwords or payment methods, and that credentials go into secure storage it can use without reading them. Where a service has no public API, Meta says Muse can use it through a browser the way a person would. That browser access is exactly what Amazon objects to.
The legal backdrop explains why Amazon’s message cites its terms rather than hacking law. Amazon won a preliminary injunction against Perplexity’s Comet shopping agent in March, but the Ninth Circuit overturned it on August 4, finding that the user, not the AI company, was the one accessing Amazon’s computers under federal anti-hacking law. A rehearing was denied on September 10. Contract and terms-of-service claims were left open, and that is the ground Amazon is now standing on.
Money is part of it too. GeekWire notes Amazon earned more than $68 billion in advertising revenue last year, and that business depends on people browsing Amazon’s pages and seeing sponsored products. An agent that skips the pages also skips the ads.
Shopify’s lane is switched on by default
Shopify’s own Help Center page for selling on Meta lays out how this works for merchants, and several details matter more than the headline:
- It is active by default. Eligible stores have Meta direct checkout turned on automatically. Products reach Meta through Shopify Catalog with no setup.
- It is limited to North America. Meta’s direct checkout is only shown to customers in the United States, Canada and Mexico, and the store must sell to those countries.
- There is no extra fee. Shopify says merchants pay only their standard payment processing fees, and they stay the merchant of record for fulfilment, returns and support.
- Some products are excluded. Subscriptions, product bundles, customizable products and B2B-only items cannot be bought through Meta’s direct checkout. Local delivery and store pickup are also unsupported.
- Tracking breaks. Google Analytics and custom pixels do not fire in Meta’s direct checkout. Only server-to-server checkout events are sent.
Who has to deal with this first?
A large share of the people who actually run Shopify stores for US brands are remote freelancers and agencies, many of them in Pakistan. Demand for that work is rising: beingguru has reported that ecommerce management grew 130% on Upwork. For anyone managing a client store that sells into the US, Canada or Mexico, this change has already landed in the admin.
The attribution gap is the part most likely to cause trouble. If a client judges ad spend by Google Analytics or a custom pixel, orders completed inside Muse will not show up there. They will show up in the Shopify admin, attributed to Meta. A store manager who explains this before the monthly report avoids a difficult conversation about “missing” sales.
Three settings are worth reviewing under Sales channels > Agentic in the Shopify admin: whether Shopify Catalog access for Meta should stay on, whether direct checkout should stay on or send buyers back to the store, and whether store policies are complete, since Shopify requires terms of service, privacy and refund policies for this channel. Shopify also asks that legal disclosures sit in the first 6,000 characters of a product description.
For sellers and virtual assistants working inside Amazon, the picture is the reverse. By keeping outside agents off its site, Amazon is protecting the pages where sponsored product ads run, so Amazon PPC and listing skills keep their value for now.
The contract fight still ahead
Amazon says it is talking directly with Meta and declined to say whether it will sue. The Perplexity ruling means a lawsuit would have to rest on Amazon’s terms rather than anti-hacking law, and no court has yet decided how far a retailer’s terms can bind an agent acting for a customer. Until one does, merchants will be sorting themselves into two camps: platforms that invite AI agents in and platforms that keep them out.
