agent-harness
2 articles
Agent Harness Engineering: How OpenAI Built a Million Lines of Code With Zero Human-Written Code
OpenAI's team let Codex write a million lines of code over five months — zero human-written code. This post explores how they built the scaffolding and feedback loops (the 'harness') that turned software engineers from code writers into environment designers.
Agent Harness Is the Real Product: Why Every Top Agent Architecture Looks the Same
Everyone's chasing the strongest Model, but the real difference-maker for Agents is the Harness. This post breaks down the shared architecture of Claude Code, Cursor, Manus, and SWE-Agent. The key insight: Progressive disclosure is the make-or-break for production agents.