Author

Abhishek Pradhan

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Preprint Jul 2026

GuardianAgentBench: Where Agents Fail and How to Guard Them

Guardrail implementation consistently outperforms system-prompt-based defenses across all models, recovering 19.9% of failures at a false positive rate of just 0.5%, demonstrating that execution-time structural intervention improves safety without disrupting correct agent behavior.

V. Naik, Chenyu Xu, Donna Dong et al. · 0 citations