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

Agent-Canary-Mas: End-to-End Evaluation of Protocol Risk in Long-Horizon Multi-Agent Systems

We present Agent-Canary-Mas, an end-to-end evaluation system that follows protocol risk through long-horizon multi-agent tasks.

Key points

  • Agent-to-agent protocols allow LLM agents to discover peers, exchange results, and coordinate tool use.
  • A locally successful protocol attack, however, may be rejected by a later agent or propagated into a consequential task decision.
  • A shared OpenClaw framework runs autonomous, tool-using agents under different underlying models while preserving the task and execution setup.
  • These results show that protocol risk depends on how agents use exchanged objects throughout the task, and that evaluating this path supports more informative risk assessment, attribution, and defense.

Sources (1)

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