Harness-of-Harness: Multi-Day Autonomous Software Development with Continual Improvement

Researchers introduced Harness-of-Harness (HoH), a framework enabling LLM-based coding agents to continually improve over multi-day autonomous software development, transforming high-level requirements into complete, functional software without human intervention.

This paper studies autonomous software development, in which LLM-based coding agents transform high-level requirements into complete, functional, and usable software systems without human intervention. We introduce Harness-of-Harness HoH , a framework that enables coding agents to continually impro