Amazon Wins Court Order to Block Perplexity’s AI Shopping Agent
A federal judge in the United States has granted a temporary court order blocking startup Perplexity from accessing Amazon’s website through its artificial intelligence browser called Comet. The ruling marks another chapter in a dispute that has been escalating since November, when Amazon sued Perplexity claiming the startup took steps to disguise its AI agents and continued scraping the retailer’s site without authorization. Perplexity, for its part, called the lawsuit — filed in the U.S. District Court for the Northern District of California — an intimidation tactic.
The case stands out because it pits two highly representative sides of the current tech landscape against each other: on one side, the planet’s largest online retailer trying to protect its ecosystem; on the other, one of the most talked-about AI startups on the market, betting that the future of shopping will be driven by intelligent assistants. The outcome of this battle could define how autonomous artificial intelligence agents interact with major e-commerce platforms in the years ahead.
What Is Comet and Why Amazon Felt Threatened
The Comet is an AI shopping agent developed by Perplexity, one of the most talked-about startups in the artificial intelligence space over recent months. The agent’s value proposition is fairly simple to understand, but technically ambitious: it works as a personal shopping assistant that browses online stores, compares prices, selects products, and can even complete orders autonomously. In practice, Comet acts as if it were the actual consumer, accessing e-commerce platforms, filling in data, and clicking buy buttons on behalf of whoever activated it. All of this without the user needing to open a browser or visit any website manually.
The problem is that Amazon never authorized this type of automated access to its site. The company argues that Comet violates its terms of use by scraping data, simulating human behavior, and executing transactions without the platform’s consent. For Amazon, allowing an external agent to freely navigate its infrastructure poses security risks, compromises the experience of its own customers, and sets dangerous precedents for any AI tool to do the same.
On top of that, Amazon claims Perplexity commercially benefits from the entire catalog, logistics, and pricing infrastructure the retailer has built over decades, without contributing anything in return. Amazon’s response was swift and direct: the company filed a lawsuit asking the court to immediately block Comet from operating on its marketplace.
The Court’s Ruling and the Arguments Presented
In a ruling dated Monday, federal judge Maxine Chesney wrote that Amazon presented strong evidence that Perplexity’s Comet browser accessed its site under user direction, but without authorization from the e-commerce giant. According to the judge, Amazon provided essentially uncontested proof that it spent more than 5,000 dollars responding to the issue, including numerous hours its employees worked to develop tools that would block Comet’s access to its private customer tools and prevent future unauthorized access.
Based on this evidence, the judge concluded that Amazon demonstrated a likelihood of success on the merits of its claim. The ruling includes a one-week stay to allow Perplexity to appeal the order.
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Amazon spokesperson Maxine Tagay said the preliminary injunction is an important step in maintaining a trustworthy shopping experience for its customers. Tagay also stated that the company looks forward to continuing to present its arguments in court.
Perplexity, meanwhile, said in a statement that it will continue fighting for the right of internet users to choose whatever AI they want.
What Amazon Claims About Security and Advertising
In the original complaint, Amazon wrote that Perplexity’s agents pose security risks to customer data because they can operate within protected computer systems, including private customer accounts that require passwords. This point is particularly sensitive because it involves information such as shipping addresses, payment data, and purchase history — data that, in Amazon’s view, should not be handled by external agents without proper oversight.
The company also highlighted impacts on its advertising business. When AI systems generate ad traffic, impressions need to be detected and filtered before advertisers can be charged. This requires modifications to Amazon’s advertising systems, including the development of new detection mechanisms to identify and exclude automated traffic. According to Amazon, these adaptations are necessary to maintain contractual obligations with advertisers who pay only for legitimate human impressions.
Perplexity’s Position
On the other side, Perplexity defends itself by arguing that Comet represents the natural future of e-commerce and that blocking AI agents is equivalent to stalling technological innovation. The startup argues that users have the right to choose how they want to shop and that delegating this task to an intelligent assistant is simply an evolution of what already happens with price comparison tools and browser extensions.
Perplexity also claims its agent does not permanently store Amazon data and that the entire process is carried out at the request of and for the benefit of the consumer themselves. According to the company, Amazon’s real motivation is not to protect its users but rather to maintain absolute control over the shopping journey and prevent competitors from offering more efficient and personalized experiences through artificial intelligence.
Amazon Has Been Blocking Dozens of AI Agents
It is worth noting that the Perplexity case is not an isolated incident. Amazon has been broadly blocking AI agents from accessing its shopping sites, barring dozens of tools, including OpenAI’s ChatGPT. At the same time, the retailer is investing heavily in its own artificial intelligence solutions, such as Rufus, an AI-powered shopping assistant already available on its site and app.
This strategy makes Amazon’s stance clear: the company is not against the use of artificial intelligence in e-commerce, but it wants it to happen under its own rules and within its own ecosystem. The message to the market is that integrations with the platform should be done through official APIs and with explicit authorization, not by autonomous agents accessing the site as if they were regular users.
What This Means for the Future of AI-Powered Shopping
This dispute between Amazon and Perplexity goes far beyond an isolated case involving a single product. It raises fundamental questions about who controls the shopping experience on the internet and to what extent AI agents can act as intermediaries between consumers and platforms. The concept of an AI shopping agent is rapidly gaining traction in the market, with several companies developing tools similar to Comet.
If American courts decide that platforms like Amazon have the right to block these agents, it could create a precedent that significantly limits the advancement of this technology. On the other hand, if Perplexity manages to overturn the ruling, it could pave the way for a new era in which intelligent assistants do practically everything for the consumer, from researching to paying.
The scenario also highlights a growing tension between major tech corporations and artificial intelligence startups. Companies like Amazon have invested billions of dollars to build closed, optimized ecosystems where every detail of the user experience is controlled to maximize conversions and loyalty. When an external agent enters this ecosystem and conducts the purchase process autonomously, it essentially strips Amazon of the power to influence purchasing decisions, display personalized recommendations, and promote its own products and services. This represents a direct threat to the company’s business model, which relies heavily on internal advertising and control over the customer journey.
For consumers, the outcome of this legal battle could have very real day-to-day impacts. Imagine having an assistant that knows your preferences, automatically monitors prices, applies coupons, and completes purchases at the most advantageous moment — all without you needing to do a thing 🤖. That is the future companies like Perplexity are trying to build. However, without clear agreements between AI agents and e-commerce platforms, that future may take longer than expected to materialize.
Regulation and the Next Steps
One of the most relevant aspects of this case is the lack of specific regulation for autonomous artificial intelligence agents in the online shopping environment. Currently, the laws Amazon is using to support its case were created decades ago, at a time when no one imagined a bot could make purchases on its own. The Computer Fraud and Abuse Act, for example, was designed to combat intrusions into computer systems and was not necessarily intended to regulate the use of AI shopping agents like Comet. This creates a legal gray area that courts now need to interpret, and the result could vary significantly depending on how the judiciary understands the difference between unauthorized access and legitimate use on behalf of the consumer.
Perplexity has already signaled that it intends to appeal the decision and is willing to take the case to the highest courts if necessary. The company believes the global trend is toward greater openness for AI agents and that trying to block this technology is like trying to stop the advancement of the internet itself.
Meanwhile, Amazon emphasizes that it is open to partnerships and integrations, as long as they are done through its official APIs and within its terms of use. In other words, the e-commerce giant is not against the use of artificial intelligence in shopping, but it wants it to happen on its own terms and under its supervision.
Why This Case Matters for the Entire Tech Industry
The Amazon versus Perplexity case will likely be closely watched by the entire tech industry. Startups developing autonomous shopping agents, large retailers worried about losing control over the customer experience, and even lawmakers who will need to create clear rules for this new landscape — everyone is paying attention to what happens next.
The final decision could set the rules of the game for an entire generation of artificial intelligence products applied to e-commerce. If Amazon wins, the trend is that other platforms will follow the same path and strengthen their barriers against external agents. If Perplexity manages to turn things around, the market could witness a real race among AI startups to offer increasingly sophisticated and autonomous shopping assistants.
What is ultimately at stake is a power struggle over who gets to define the terms of digital commerce in the future. And this is a story that is far from over 🔍
