Shoppers sending Meta’s new AI assistant, Muse, to run errands on Amazon are hitting a sudden roadblock. Over the weekend, users attempting to buy items or load shopping carts through Meta’s Muse AI agent began receiving an explicit warning popup stating that unauthorized AI access violates Amazon’s Conditions of Use.
First reported by GeekWire, the block stops Meta’s flagship AI assistant from completing purchases on behalf of users. The move signals a major escalation in how the e-commerce giant handles third-party AI agents browsing its storefront without explicit permission.
Hidden identities, security risks, and contract terms
Amazon claims Meta never asked for authorization to let Muse shop on its site, nor does the agent properly identify itself while browsing. Amazon also says Muse operates like an undisclosed third party moving through private user accounts, capturing customer credentials and scraping order histories without consent.
Meta, which launched Muse on September 8 alongside its proprietary Muse Spark model, maintains that the assistant operates within secure virtual machines. The company stated that user passwords and payment data go into encrypted storage where Muse uses them without actually viewing them.
However, Amazon points to its updated Agent Terms. These require third-party applications to identify themselves clearly in browser traffic rather than disguising themselves as human shoppers. The retail giant insists that external AI tools must operate transparently, comparing the situation to food delivery apps or travel sites that coordinate directly with merchants before taking orders.
High business stakes and legal battles over agentic shopping
The rift between the two tech titans is particularly striking given their ongoing commercial partnerships. Amazon products have been purchasable directly inside Instagram and Facebook since 2023. Plus, Meta signed a multibillion-dollar cloud deal in April to run AI workloads on Amazon’s Graviton chips.
Yet, the business stakes surrounding autonomous shopping are simply too high for Amazon to ignore. Third-party agents that bypass traditional product pages threaten Amazon’s ad ecosystem—which generated over $68 billion last year—by skipping sponsored listings and personalized recommendations.
The move against Meta coincided with Amazon filing an amended 41-page complaint against Perplexity over its Comet browser. After an appeals court ruled that user-directed web browsing didn’t violate federal anti-hacking laws, Amazon pivoted its legal strategy squarely to breach of contract and terms of service.
While Amazon tests its own autonomous purchasing tool called Buy for Me, it is making one thing clear to rivals: outside AI agents won’t be shopping on its platform unless they play by Amazon’s rules.
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