Harness Engineering

Harness Engineering is the discipline of designing environments, feedback loops, and control systems that enable AI coding agents (Codex, Claude Code, Cursor, etc.) to reliably build and maintain complex software.

Core philosophy: Humans steer. Agents execute.

The human engineer's primary job is no longer to write code, but to design environments, specify intent, and build feedback loops that allow agents to do reliable work.

What this skill helps with

This skill helps you transform any project into an agent-first codebase by applying the principles from OpenAI's Harness Engineering methodology: