What's Inside the Harness

What&rsquo;s Inside the Harness &#xA; In March I published&#xA; Building Your Own Agent Harness .&#xA;A harness, I said, is the skills, workflows, and methodology that teach your agent how you think and&#xA;how you build. Since then, harness has taken on a different meaning: Claude Code, Codex, Cursor,&#xA;the whole runtime wrapped around a model. In my terms, that combination is the agent. You…