Is AI Shopping on Your Behalf Illegal or Legal? Amazon and Perplexity’s Courtroom Battle

Imagine this: On a busy morning, you say to your smartphone, “Order that coffee bean I saw yesterday.” The AI automatically connects to an online shopping mall, adds the item to your cart, and completes the payment. You don’t have to open the app, search for the product, or enter a password. It sounds like a truly convenient future, but what if this behavior is seen as ‘illegal hacking’ by the online store?

Recently, this very issue has pitted retail giant Amazon against the rising AI firm Perplexity AI in a fierce courtroom battle. Their fight goes beyond a simple corporate dispute; it is a critical case that will decide whether ‘Agent AI’ (AI that performs tasks on the web on behalf of the user)—which will change our lives—can freely use the internet.

Why is this important?

This lawsuit is directly linked to our daily lives. Countless services we use have ‘Terms of Service.’ You often see phrases like “Do not use macros or automated tools.” But in the AI era, these tools become the core functionality of our personal assistants. Simply put, artificial intelligence is becoming our hands and feet, roaming the internet world.

If the court rules that “it is illegal for AI to shop on your behalf,” the functionality of the ‘smart AI assistant’ we expect could be drastically reduced. Metaphorically, it’s like hiring a smart assistant but blocking them from passing through the entrance of the shopping mall. Conversely, if it is recognized that “if the user has authorized the action, it is okay for AI to do it on their behalf,” AI agent services will explode in growth. In other words, this ruling is a process of drawing an ‘invisible line’ that determines how smart our AI in our pockets can be.

Understanding it Simply: The Debate Over Digital ‘Right of Way’

To make this case easier to understand, think of it as a conflict between a massive shopping mall (Amazon) and a smart personal assistant (Perplexity’s ‘Comet’).

Amazon argues that their shopping mall is a space for people to walk through and browse personally. However, with Comet running around too fast and picking up items, Amazon is anxious about whether this is legitimate shopping or an intruder sabotaging their system. Consequently, Amazon filed for a preliminary injunction in court to block Comet’s access, claiming that “accessing our mall with mechanical tools is a violation of laws such as the federal Computer Fraud and Abuse Act (CFAA), which prohibits unauthorized access to and misuse of computer systems” [Source 1, Source 2].

On the other hand, Perplexity pleaded their innocence, stating, “We are merely personal assistants processing requests on behalf of users.” Their logic is that this is no different from helping someone shop in person [Source 7].

Current Status: A New Decision by the Court of Appeals

Initially, the U.S. District Court for the Northern District of California sided with Amazon, issuing a temporary restraining order (preliminary injunction) to prevent Perplexity’s Comet from engaging in purchasing activities on the Amazon site [Source 2].

However, the ruling was overturned by the Ninth Circuit Court of Appeals on August 4, 2026 [Source 1]. The Court of Appeals vacated the preliminary injunction previously issued by the lower court and remanded the case for further consideration [Source 2]. This essentially means that “whether it is legally justified to issue a preliminary injunction in the manner Amazon is requesting needs to be examined further.” In other words, Perplexity has been granted some breathing room.

What will happen in the future?

This ruling does not mean that AI agent activities have been fully permitted across the board. The boundary between ‘authorized access’ and ‘illegal automation’ remains legally ambiguous [Source 5]. As mentioned earlier, it is akin to judging whether someone sprinting through a crowded supermarket is an ‘athlete’ or an ‘obstructor of business.’ The future of the AI industry will depend on how the lower court interprets this boundary in the future.

Readers should keep an eye on how legally protected ‘the right for my AI assistant to directly perform tasks I have assigned’ becomes. Will giant platforms close their doors, or will they embrace new technology and coexist?

MindTickleBytes’ AI Reporter’s Perspective

This case is not just a fight between two companies. It is a critical legal experiment in finding a social consensus between platform monopoly and AI user convenience. In an era where technology acts on behalf of human behavior, the law must become equally intelligent. It is time for us all to ponder reasonable ways to ensure digital order while enjoying convenience.

References

1. UNITED STATES COURT OF APPEALS FOR THE NINTH CIRCUIT https://cdn.ca9.uscourts.gov/datastore/opinions/2026/08/04/26-1444.pdf
2. Amazon.com Services v. Perplexity AI — Ninth Circuit vacates injunction over AI browsers Amazon use https://caselawwire.com/federal/amazon-com-services-v-perplexity-ai-ninth-circuit-vacates-injunction-over-ai-browsers-amazon-use/
3. Amazon.com Services, LLC v. Perplexity AI, Inc. - Law360 https://www.law360.com/cases/69b1ed14972d406710e45f2d
4. Amazon.com Services LLC v. Perplexity AI, Inc., 3:25-cv-09514 https://www.courtlistener.com/docket/71874820/amazoncom-services-llc-v-perplexity-ai-inc/

5. Amazon v. Perplexity AI

   Knight First Amendment Institute https://knightcolumbia.org/cases/amazon-v-perplexity-ai

6. FOR PUBLICATION UNITED STATES COURT OF APPEALS FOR THE NINTH CIRCUIT https://www.courthousenews.com/wp-content/uploads/2026/08/amazon-v-perplexity-ninth-circuit-opinion.pdf
7. Amazon.com Services, LLC v. Perplexity AI, Inc. https://www.law360.com/cases/69b1ed14972d406710e45f2d/articles