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20242026
most citedWhich Agent Causes Task Failures and When? On Automated Failure Attribution of LLM Multi-Agent Systems

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cs.CL2026

A Few Neurons Reveal When LLMs Misuse Tools: Sparse Detection and Selective Steering for Reliable Tool Use

Yutong Ke, Ming Yin, Chongwen Zhao +1

Agentic LLMs exhibit three consequential tool-use failures: invalid arguments (validity), unnecessary calls (over-calling), and omitted calls when tools are needed (missing). We fi…