I Built a 41-Line Approval Gate for AI Agents. Then I Tried to Break It 20 Ways.
Twenty commands. Ten safe, ten meant to hurt. I fed them to the gate one at a time and wrote down every verdict. The gate is 41 lines of Python. It takes a proposed shell command, checks it against a denylist file, checks its shape, and prints ALLOW or BLOCK. It never runs the command. That is the…
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- 2026-11-12 22:00 · DEV Community — AI
I Built a 41-Line Approval Gate for AI Agents. Then I Tried to Break It 20 Ways.