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W.H.Agent - An AI antivirus and sandbox

A developer built W.H.Agent (White Hat Agent), an open-source CLI and sandboxing tool designed to provide pre-execution and runtime defense for AI agents. The tool aims to protect against threats like poisoned packages or malicious tool execution, though it is still a work in progress with macOS-only sandboxing currently.

read1 min views1 publishedJun 25, 2026

Hey everyone!

🔗 GitHub Repo: https://github.com/Twix1288/W.H.A/tree/main With tools like Cursor, Claude Desktop, and various MCP servers becoming part of our daily workflows, I started worrying a bit about the attack surface of having autonomous, stateful AI agents running locally. What happens if an agent pulls down a poisoned package or executes a malicious tool?

To try and solve this for myself, I built W.H.Agent (White Hat Agent). It’s an open-source CLI and sandboxing tool designed to act as a pre-execution and runtime defense for AI agents.

To be completely honest, it’s still very much a work in progress (the OS-native sandboxing is currently macOS-only, for example), and I’m sure there are edge cases I haven't even thought of yet. But I decided to open-source it today because I genuinely want to see if this approach brings value to other developers.

A few things it currently does:

I figured the best way to learn and improve it is to put it out there. If you have a few minutes, I would be incredibly grateful if you checked it out or gave it a quick roast. Is this something you would use in your workflow?

Thanks so much for your time, and I'm looking forward to any feedback (the good, the bad, and the ugly)!

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