The brewing tension between e-commerce giant Amazon and AI startup Perplexity has officially escalated. The Amazon legal threat to Perplexity centers on the startup’s agentic shopping assistant, Comet, which Amazon claims violates its terms of service.

After multiple warnings, Amazon sent Perplexity a formal cease-and-desist letter, demanding that it stop using Comet to shop on Amazon’s platform. Perplexity fired back with a fiery blog post titled “Bullying is not innovation.”

“This week, Perplexity received an aggressive legal threat from Amazon, demanding we prohibit Comet users from using their AI assistants on Amazon,” the company wrote. “This is Amazon’s first legal salvo against an AI company, and it’s a threat to all internet users.”

What’s Behind the Amazon Legal Threat to Perplexity

At the heart of the Amazon legal threat to Perplexity is a simple but contentious question: should AI agents have to identify themselves when acting on behalf of users?

Perplexity argues no, claiming that its agentic browser simply acts as a “proxy” for human users. Therefore, it says, Comet should have the same permissions as the person it represents.

Amazon strongly disagrees. According to a spokesperson, third-party agents must disclose their identity when interacting with Amazon’s platform, just as food delivery apps or travel booking services do.

“It’s fairly straightforward,” Amazon said in a statement. “Third-party applications that make purchases on behalf of customers should operate openly and respect service provider decisions on participation.”

Agentic Browsing vs. Platform Rules

The Amazon legal threat to Perplexity exposes a growing rift between AI-driven browsing tools and established online ecosystems.

Perplexity’s Comet is designed to automate product searches and purchases — but Amazon, which has its own shopping AI called Rufus, could easily block external bots.

Industry analysts say Amazon’s stance might be less about transparency and more about control. By forcing agents like Comet to reveal themselves, Amazon can choose to restrict or monetize access, protecting its ad revenue and product placement systems.

Perplexity, however, claims this is anticompetitive. It argues that Amazon doesn’t want bots that “shop logically” — instead, it prefers human users who might get distracted by upsells, cross-promotions, or impulse purchases.

A Familiar Pattern: Cloudflare and the Scraping Controversy

This Amazon legal threat to Perplexity isn’t the first time the AI company has been accused of overstepping boundaries. Earlier this year, Cloudflare alleged that Perplexity’s bots were scraping websites that had explicitly opted out of AI access.

However, supporters defended Perplexity, saying its actions resembled normal user behavior — fetching public data when specifically prompted. Critics, meanwhile, accused it of masking its identity to avoid detection.

The incident foreshadowed what’s now happening with Amazon: a messy, uncharted battle between traditional web rules and emerging agentic AI systems that act autonomously on users’ behalf.

The Bigger Question: Who Controls Agentic AI?

The Amazon legal threat to Perplexity may ultimately define how AI agents operate across the web. If Amazon wins this fight, other platforms might follow its lead — requiring every AI assistant to self-identify and seek explicit permission.

But if Perplexity prevails, it could set a precedent that allows autonomous AI agents to browse, compare, and transact freely — transforming how people interact with e-commerce platforms.

For now, Amazon is drawing a hard line in the sand: agentic browsing is welcome, but only on its terms.

What Comes Next

Perplexity has not backed down. The company says Amazon’s actions threaten the open web and innovation in AI. “We believe users should decide how they access information — not corporations,” Perplexity wrote.

Meanwhile, Amazon continues expanding its own AI ecosystem, including Rufus, its in-house conversational shopping assistant, which could soon become the centerpiece of Amazon’s AI-first retail strategy.

The Amazon legal threat to Perplexity isn’t just a legal scuffle — it’s a defining moment for how AI agents and the internet will coexist. Will websites embrace digital agents or block them at the gate?

That question could shape the next decade of online commerce.