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This article examines the emerging legal battle between Amazon and Perplexity, triggered by Comet’s agentic shopping feature that allows users to describe their needs and delegate the entire purchasing journey to AI. Amazon has alleged that such autonomous activity violates its terms of use and constitutes unauthorised access under U.S. computer fraud laws, citing cybersecurity and user-safety concerns. Perplexity, however, characterises Comet as a lawful “user agent,” acting