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Video course · 15 chapters · 149 min · certificate

OpenAI Codex: Build Real Projects with AI Agents

Build real projects with OpenAI Codex: what it is and how it compares to Claude Code, pricing, the app, web and CLI, slash commands, headless mode, Git, AGENTS.md, sub-agents, skills, MCP, worktrees, databases and deployment.

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What you'll learn

  • Explain what Codex is and compare it with Claude Code
  • Understand pricing and usage limits
  • Use the Codex app, web and CLI
  • Run Codex headless in CI
  • Configure AGENTS.md, sub-agents, skills and MCP
  • Use worktrees, integrate a database and deploy

Chapters

15 chapters · 149:13
  1. 6:49 01Intro Members What is Codex? Codex as an AI coding agent that works through APIs and tools.
  2. 8:16 02Comparison Members Codex versus Claude Code and pricing Comparing Codex with Claude Code, and understanding pricing and usage limits.
  3. 18:52 03App Members The Codex app Using the Codex desktop app, plus third-party usage trackers.
  4. 2:35 04Web Members Codex on the web Accessing Codex from the web interface.
  5. 18:53 05CLI Members Codex CLI Installing the CLI and signing in with ChatGPT.
  6. 6:34 06Commands Members Slash commands and profiles Slash commands and profiles that set reasoning effort per task.
  7. 4:40 07Automation Members Headless mode Running Codex headless in CI pipelines.
  8. 10:26 08Git Members Git and GitHub Authenticating GitHub and working with repositories from Codex.
  9. 5:10 09Config Members AGENTS.md Repository guidelines for agents in AGENTS.md.
  10. 17:09 10Sub-agents Members Sub-agents A main agent delegates to sub-agents, monitors them and merges results.
  11. 9:19 11Skills Members How skills work Skills capture repeated tasks so you don't redo the setup every time.
  12. 12:06 12MCP Members MCP servers MCP servers let Codex, Claude Code or Copilot connect to external applications.
  13. 16:46 13Worktrees Members Git worktrees Using git worktrees to run parallel work in separate folders.
  14. 5:05 14Database Members Integrating a database Integrating a Neon database from the CLI and watching changes live.
  15. 6:33 15Deploy Members Deployment Deploying the finished URL shortener app.

Jobs this course suits

Our AI checked this course against 500 jobs; these get the most out of it. Each job links to its learning path.

Full-Stack DevelopersComputer Science StudentsSoftware DevelopersWeb DevelopersWebsite Developers