Curriculum for the course OpenAI Codex Essentials – AI Coding Agent
Learn how to use Codex to accelerate real-world coding workflows and developer productivity. Created by @ExamProChannel Course info: https://www.exampro.co/exp-codex-01 ❤️ Support for this channel comes from our friends at Scrimba – the coding platform that's reinvented interactive learning: https://scrimba.com/freecodecamp ⭐️ Contents ⭐️ - 00:00 Introduction - 01:33 Codex Essentials - 03:02 The AI Certification Roadmap - 06:51 Study Recommendations & Passing Requirements - 09:23 Validity and Re-certification - 11:26 Accessing the Code Repository Codeex Fundamentals - 12:10 What is Codeex? Agentic Coding vs. Coding Harness - 13:39 Common Use Cases and Skills - 14:21 Understanding the Agentic Loop - 15:40 OpenAI GPT Model Families - 17:27 Deep Dive: Model Intelligence vs. Context Windows - 21:52 Installation Requirements (Node.js & WSL 2) - 23:00 Authentication: Subscription vs. API Keys - 23:32 Checking Login Status and Account Info - 24:33 Lab: Installing Codeex and "Hello World" - 29:32 Using API Keys for Production and Automation - 32:26 Setting Environment Variables for Keys - 36:00 Subscriptions vs. API Token Billing - 38:08 Managing the Context Window (400k Token Limits) - 40:06 Truncation and Hallucination Issues - 40:36 Commands: /clear and /compact - 41:17 Lab: Managing Context History - 50:27 Codeex Sessions, Threads, and Messages - 51:25 Session Commands: /new, /resume, /fork, and /rename - 52:48 Under the Hood: SQLite and JSONL Session Storage - 1:01:01 Tracking Usage with Custom Scripts - 1:13:53 Customizing the Status Line - 1:22:05 Project Guidance via agents.md - 1:23:09 Truncation Limits and Tracing - 1:24:39 Lab: Creating Project Guidelines - 1:41:08 Deep Dive: Plan Mode and Clarifying Questions - 1:42:10 Project Lab: Building a Wolfenstein 3D Clone - 1:53:00 Sandbox Security: Bubble Wrap and Seatbelt - 1:53:56 Approval Policies (Untrusted, Request, Never) - 1:54:50 OS-Specific Settings and Network Access - 2:04:49 Permission Overrides: Auto Mode vs. Full Access - 2:07:01 Creating and Troubleshooting Rules - 2:32:50 Global vs. Project Configuration (config.toml) API, SDKs, and Extensions - 2:36:19 Non-Interactive (Headless) Mode for CI/CD - 2:43:35 OpenAI Interaction Layers: REST API vs. SDKs - 2:50:04 Implementing the OpenAI Agents SDK - 3:01:13 Working with the Codeex SDK - 3:05:16 Using the Codeex Desktop Application - 3:09:29 Installing the VS Code Extension - 3:10:58 The Codeex App Server Protocol - 3:12:24 Automated Workflows with GitHub Actions - 3:18:07 Anatomy of Agent Skills - 3:21:20 Discovery, Activation, and Execution - 3:22:26 Skill Locations and Marketplace - 3:23:01 Lab: Image Generation Skills - 3:35:03 Project Lab: Building a Task Manager Skill - 3:47:08 Optimizing Cost with Model and Effort Selection - 3:48:14 Fast Mode for Inference - 3:57:18 Connecting MCP Tools (Roblox Example) - 4:10:21 Orchestrating Sub-Agents and Worker Teams 🎉 Thanks to our Champion and Sponsor supporters: 👾 @omerhattapoglu1158 👾 @goddardtan 👾 @akihayashi6629 👾 @kikilogsin 👾 @anthonycampbell2148 👾 @tobymiller7790 👾 @rajibdassharma497 👾 @CloudVirtualizationEnthusiast 👾 @adilsoncarlosvianacarlos 👾 @martinmacchia1564 👾 @ulisesmoralez4160 👾 @_Oscar_ 👾 @jedi-or-sith2728 👾 @justinhual1290 -- Learn to code for free and get a developer job: https://www.freecodecamp.org Read hundreds of articles on programming: https://freecodecamp.org/newsWatch Online Full Course: OpenAI Codex Essentials – AI Coding Agent
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