Perplexity Beats Amazon in Court Over AI Shopping Agent logo

Perplexity Beats Amazon in Court Over AI Shopping Agent

The Ninth Circuit vacated Amazon's injunction against Perplexity's Comet shopping agent, ruling that users -- not Perplexity -- 'access' Amazon's servers under federal computer-hacking law.

By the Numbers

Injunction vacated
Ruling
March 2026
Original suit filed
Ongoing
Case status
TC
By the Markets Desk
Edited by Trace Cohen · Early-stage VC & angel · Founder, New York Venture Partners
1 min read
ShareXLinkedInEmail

THE RUNDOWN

1

The Ninth Circuit vacated a preliminary injunction that had barred Perplexity's Comet browser from shopping on Amazon, ruling Amazon is unlikely to succeed on its Computer Fraud and Abuse Act claim

2

The panel held that Perplexity's AI 'Assistant' is a tool operated by users, not by Perplexity itself -- so it's the user, not Perplexity, who legally 'accesses' Amazon's servers, even though Comet sends screenshots to Perplexity's own servers to complete tasks

3

Amazon sued Perplexity in March 2026, alleging Comet had been secretly disguised as a normal Chrome browser to re-enable agentic shopping after the two companies had agreed to pause it in 2024

4

The ruling doesn't close the underlying case -- Amazon can seek rehearing or petition the Supreme Court -- but it's the first meaningful appellate precedent on whether AI shopping agents count as unauthorized 'access' under a law written decades before agentic browsing existed

TC

The VC Read · Trace's Take

Trace Cohen

This ruling is bigger than Perplexity vs. Amazon -- it's the first real appellate answer to whether an AI agent acting on a user's behalf inherits the user's legal permissions, and every agentic browser and shopping startup just got a usable precedent to point to. I wouldn't call the CFAA question settled given Amazon's rehearing options, but founders building agentic commerce tools should be studying this opinion line by line before their own version of this lawsuit shows up.

Analysis

The Ninth Circuit vacated Amazon's injunction against Perplexity's Comet shopping agent this week, ruling that Amazon is unlikely to succeed on its core legal theory -- that Perplexity itself violated the Computer Fraud and Abuse Act by letting Comet browse and shop on Amazon.com. The panel, in an opinion authored by Circuit Judge Milan D. Smith Jr., held that it's the user, not Perplexity, who legally 'accesses' Amazon's servers when using the AI shopping assistant, even though Comet sends screenshots of Amazon pages back to Perplexity's own servers to help complete a requested task.

A Dispute That Started With a Broken Truce

The case traces back to March 2026, when Amazon sued Perplexity alleging Comet had been secretly disguised as an ordinary Chrome browser to quietly re-enable agentic shopping after the two companies had agreed to pause the feature back in 2024. Amazon won a temporary injunction shortly after filing, blocking Comet from shopping on Amazon entirely -- the injunction this ruling now vacates.

The decision doesn't resolve the underlying dispute; Amazon can still seek rehearing or ask the Supreme Court to weigh in, and the core CFAA claim remains alive at the district court. But it's the first meaningful appellate precedent on a question every AI browser and shopping-agent company has been watching closely: whether a decades-old computer-hacking statute, written long before agentic browsing existed, treats an AI agent acting on a user's behalf the same as the user acting directly.

What to watch: whether other retailers facing similar agentic-shopping friction treat this ruling as settled law for their own CFAA theories, or whether Amazon's eventual rehearing petition narrows the precedent before it can be relied on broadly.

ShareXLinkedInEmail

Key Sources

2 sources

THE WIRE in your inbox— Tech, startup & VC news with Trace's take. Free, no spam.