Better Harness: A Recipe for Harness Hill-Climbing with Evals

We can build better agents by building better harnesses. But to autonomously build a “better” harness, we need a strong learning signal to “hill-climb” on. We share how we use evals as that signal, plus design decisions that help our agent generalize instead of overfit. Better-Harness is a system for iteratively sourcing and improving your harness with evals.