PaperAgent

Jun 20, 2026 · Artificial Intelligence

Vertical Domain Agents Gain 88.5% Boost by Adapting the Runtime Interface, Not Retraining

The paper shows that many failures of deterministic LLM agents stem from mismatched model‑environment interfaces, and introduces LIFE‑HARNESS—a four‑layer runtime harness that extracts reusable failure patterns from training trajectories without updating model weights, delivering an average 88.5% relative performance gain across 126 model‑environment settings.