Agent Harness Awareness: Turning Verified Telemetry into Operational Control for Tool-Using Agents

Agent Harness Awareness is a trust-separated design that provides a verified state snapshot to tool-using agents before consequential actions, reducing mean observable policy regret by 96.9% and raising single-dispatch completion from 69.4% to 95.8% in a 216-decision ablation across GPT-5.6 Sol, Claude Sonnet 5, and Gemini 3.7 Flash.