This Is Why Your Main Agent Shouldn't Read Every Trace

This post argues against a monolithic main agent processing all trace data. Instead, it proposes a hierarchical agentic approach where specialized sub-agents (screener and verifier) pre-process and filter trace information before it's presented to the main agent. This strategy aims to improve efficiency, reduce cognitive load on the main agent, and enable more focused investigation of agent behavior. The core technical contribution is the architectural pattern of delegating trace analysis to dedicated sub-agents within an agent harness.