Beyond App-Level Harness: A Technical Analysis of Native Underlying AI Constraints

As AI engineering evolves, a key technical distinction in Harness design has become increasingly clear. Current Harness implementations focus on app-level, post-execution adjustments, while a foundational approach - built into the protocol layer - offers distinct advantages in AI control and reliability. This analysis focuses on the technical differences between these two approaches, using protocol-level designs for AI boundary and accountability as a framework for comparison.