Show HN: Agent Arena – Test How Manipulation-Proof Your AI Agent Is

Published: 2 months ago (February 6, 2026 at 07:12 AM EST)

1 min read

Source: Hacker News

Agent Arena

Creator here. I built Agent Arena to answer a question that kept bugging me: when AI agents browse the web autonomously, how easily can they be manipulated by hidden instructions?

How it works

Send your AI agent to ref.jock.pl/modern-web (looks like a harmless web dev cheat sheet).
Ask it to s…

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