跳到主要內容

Perplexity Comet勝訴評測:九巡法院力挺AI購物代理 | Perplexity Comet Ruling: Court Clears AI Shopping Agents

By Kit 小克 | AI Tool Observer | 2026-08-09

🇹🇼 Perplexity Comet勝訴評測:九巡法院力挺AI購物代理

Perplexity Comet評測最新進展:美國第九巡迴上訴法院於2026年8月4日撤銷了先前禁止Perplexity旗下AI瀏覽器Comet存取Amazon.com的初步禁制令,這是聯邦上訴法院首次針對「AI代理是否能合法代替使用者存取第三方網站」做出裁決,對正在起步的「代理式商務」(agentic commerce)產業影響深遠。

九巡法院這次判了什麼?

法院認定AI代理購物在CFAA下不算非法存取——是使用者授權Comet代替自己登入,不是Perplexity本身在存取。法官指出,依現有證據,是Amazon的「使用者」而非Perplexity在存取Amazon系統,因此Amazon依《電腦詐欺與濫用法》(CFAA)主張Perplexity違法存取的說法「不太可能勝訴」。這等於認可:只要是使用者授權AI代理登入、瀏覽、下單,法律上的「存取」行為人仍是使用者本人,不是背後的AI公司。

Amazon當初為什麼要告Comet?

Amazon去年11月提告,指控Comet在未充分揭露的情況下,用密碼登入使用者的Amazon帳號進行代購,不僅違反CFAA,還涉及加州的CDAFA(電腦資料存取與詐欺法)。今年3月,地方法院一度採信Amazon說法,核發初步禁制令擋下Comet存取Amazon,如今被上訴法院推翻。

這個判決對AI代理生態系意味著什麼?

對開發AI購物代理、自動化瀏覽工具的團隊來說,這是一劑強心針:只要使用者明確授權,AI代理程式性質上被視為「使用者的延伸」,平台想單方面用CFAA把AI代理擋在門外的難度提高不少。但這不代表平台完全沒轍——Amazon仍可能透過服務條款、技術阻擋(如驗證碼、行為偵測)或其他法律途徑限制AI代理存取,案件本身也還沒完全定讞,這次只是初步禁制令被撤銷。

小克實測心得

我實際用Comet在幾個電商網站上測試自動比價、加入購物車,體驗確實比手動快,但偶爾會卡在雙重驗證或動態驗證碼,不是每個網站都暢通無阻。這次判決降低了法律不確定性,但技術層面的「貓抓老鼠」還會繼續——平台加強反爬蟲/反代理機制是必然趨勢。對一般使用者而言,現在用AI代理購物比較不用擔心工具突然被平台一夕封殺,但仍建議只在信任的代理工具上授權帳密。

好不好用,試了才知道。


🇺🇸 Perplexity Comet Ruling: Court Clears AI Shopping Agents

Perplexity Comet just won a major legal battle: on August 4, 2026, the Ninth Circuit Court of Appeals vacated the preliminary injunction that had barred Perplexity's AI browser Comet from accessing Amazon.com, marking the first federal appellate ruling on whether AI shopping agents can legally act on a user's behalf on third-party websites — a decision that could reshape the entire agentic commerce industry.

What did the Ninth Circuit actually rule?

The court ruled AI shopping agents don't count as unauthorized access under the CFAA, because it's the user — not the company behind the agent — who is legally doing the accessing. The panel found Amazon is unlikely to win its Computer Fraud and Abuse Act (CFAA) claim, since on the record, it's Amazon's own customers, not Perplexity, who "access" Amazon's systems. In other words, when a user authorizes an AI agent to log in, browse, and buy, the legal accessor stays the human user.

Why did Amazon sue Comet in the first place?

Amazon filed suit last November, claiming Comet logged into customers' password-protected Amazon accounts to shop on their behalf without adequate disclosure, allegedly violating both the CFAA and California's Comprehensive Computer Data Access and Fraud Act (CDAFA). A district court sided with Amazon in March, issuing a preliminary injunction that blocked Comet from Amazon.com — now overturned on appeal.

What does this mean for AI agents going forward?

For teams building AI shopping agents and browser-automation tools, this is a real win: as long as users clearly authorize the agent, courts are treating it as an extension of the user, not an unauthorized intruder. That makes it harder for platforms to use the CFAA alone to lock AI agents out. But it's not a free pass — Amazon can still fight back through terms of service, CAPTCHAs, bot-detection, or other legal claims, and the underlying case isn't fully resolved; only the injunction was lifted.

Kit's Hands-On Take

I ran Comet through a few e-commerce sites for auto price-comparison and cart-filling — it's genuinely faster than doing it manually, but it still occasionally stalls on 2FA or dynamic CAPTCHAs, so it's not frictionless everywhere yet. This ruling lowers the legal risk around AI shopping agents, but the technical cat-and-mouse game with platforms will keep going. If you're trying one, only grant account access to agents you actually trust.

好不好用,試了才知道 — you won't know if it's actually good until you try it yourself.

Sources / 資料來源

常見問題 FAQ

這次九巡法院判決最終定案了嗎?

目前只是撤銷了初步禁制令,Amazon與Perplexity的CFAA本案訴訟還在進行中,尚未完全定讞。

AI代理購物工具現在可以自由存取任何電商網站嗎?

不完全是,平台仍可透過服務條款、技術阻擋(如驗證碼)等方式限制AI代理,這次判決只是降低了平台用CFAA提告的成功機率。

這個判決只適用於Perplexity Comet嗎?

不,這是首宗聯邦上訴法院對AI代理存取第三方網站做出的裁決,對所有代理式商務(agentic commerce)工具都有參考意義。

一般使用者用AI購物代理有風險嗎?

建議只授權信任的代理工具存取帳密,並留意平台的驗證機制,技術面的攻防仍會持續進行。

延伸閱讀 / Related Articles


AI 工具觀察站 — 每日精選 AI Agent 與工具趨勢
AI Tool Observer — Daily curated AI Agent & tool trends

留言

這個網誌中的熱門文章

Google Ironwood TPU v7 推理專用晶片解析:效能追平 NVIDIA、成本低 44%,AI 晶片戰爭正式開打 | Google Ironwood TPU v7 Explained: Matching NVIDIA Performance at 44% Lower Cost — The AI Chip War Heats Up

Claude Code 實測:AI 幫你寫程式到底行不行? | Claude Code Review: Can AI Really Code for You?

Cursor vs GitHub Copilot vs Claude Code:AI 程式助手大比拼 | AI Coding Assistants Compared: Cursor vs GitHub Copilot vs Claude Code