ResearchResearch paperSafety & Alignment · Agents & Tool Use1 source · Oct 11, 2026

When Messages Go Wrong: Understanding Communication Faults in LLM-Based Multi-Agent Systems

LLM-based multi-agent systems (LLM-MAS) use specialized agents that exchange messages to accomplish complex tasks.

Key points

  • Because agents often exchange open-ended natural language, anomalies can alter task-relevant information while leaving messages processable, allowing semantic errors to propagate through subsequent interactions.
  • Systematic studies of faults in inter-agent communication remain limited.
  • This paper presents a large-scale empirical study of how communication faults manifest, propagate, and affect task outcomes in LLM-MAS.
  • These observations provide empirical insights into communication-fault propagation, workflow resilience, and protection design for LLM-MAS.

Sources (1)

  • [1]When Messages Go Wrong: Understanding Communication Faults in LLM-Based Multi-Agent Systems
    arXiv (AI, ML, NLP, CV, robotics, multi-agent) · Oct 11, 08:59 AM
    LLM-based multi-agent systems (LLM-MAS) use specialized agents that exchange messages to accomplish complex tasks.
    Because agents often exchange open-ended natural language, anomalies can alter task-relevant information while leaving messages processable, allowing semantic errors to propagate through subsequent interactions.

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