Kenhuang Academy
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      • Codex Tutorial

      Welcome to the Codex tutorial. Based on OpenAI official docs and the open-source openai/codex project, this guide takes you from first run to team-scale customization.

      Table of Contents

      Basics

      1. Introduction
      2. Installation
      3. Quick Start

      Architecture

      1. Architecture & Runtime

      Customization

      1. AGENTS.md
      2. Agent Skills
      3. MCP Integration
      4. Subagents

      Security & Ops

      1. Sandbox & Security
      2. Config & CLI Reference

      Practice

      1. Practical Examples
      2. Resources

      Learning Path

      DayGoalChapters
      1Run CLI, finish one taskIntro → Install → Quick Start
      2–3Understand the agent loopArchitecture → Sandbox
      Week 1Team conventions in repoAGENTS.md → Skills → MCP

      Prerequisites

      • Terminal and Git basics
      • At least one programming language
      • ChatGPT Plus/Pro or OpenAI API access (recommended)