Welcome to Harness Engineering Masterclass: AI Coding Agents, a comprehensive, hands-on course designed to teach you how modern AI coding agents actually work and how to build reliable, production-ready development workflows around them. While many courses focus on prompting, this course goes much deeper by exploring the architecture, execution model, and engineering principles behind autonomous coding systems. You’ll learn how Claude Code, OpenAI Codex CLI, Gemini CLI, and other modern AI development tools reason about problems, manage context, execute tools, edit repositories, and collaborate to solve complex software engineering tasks.
We begin by exploring the evolution of software development, from traditional programming to today’s agentic AI era. You’ll understand the differences between large language models (LLMs) and AI agents, discover the agentic execution loop, and learn why Harness Engineering has become one of the most important skills for AI-powered software development. You’ll also compare leading AI coding tools including Claude Code, Codex CLI, Gemini CLI, Cursor, Cline, Aider, Windsurf, and OpenCode, learning where each excels and how to select the right tool for different engineering challenges.
