Getting started with Codex
Get started with Codex, OpenAI’s coding agent, in this step-by-step onboarding walkthrough. You’ll learn how to install Codex, set up the CLI and VS Code extension, configure your workflow, and use Agents.md and prompting patterns to write, review, and reason across a real codebase.
This video covers:
00:00 | Installing Codex (CLI + IDE)
04:00 | Setting up a repo and getting your first runs working
08:12 | Writing a great Agents.md (patterns + best practices)
14:14 | Configuring Codex for your environment
16:26 | Prompting patterns for more consistent results
27:02 | Tips for using Codex in the CLI and IDE
34:59 | MCP Configuration
46:50 | Advanced workflows: headless mode + SDK
52:02 | Codex resources to get you started
Sign up: https://openai.com/codex/
Codex overview + docs: https://developers.openai.com/codex
Codex Cookbook: https://cookbook.openai.com/topic/codex
Install + setup
VS Code extension: https://marketplace.visualstudio.com/...
Agents.md standard: https://agents.md
Agents.md repo: https://github.com/agentsmd/agents.md
Prompting + workflows
Prompting guide: https://developers.openai.com/codex/p...
Exec plans (Agents.md patterns): https://cookbook.openai.com/articles/...
Config reference: https://github.com/openai/codex/blob/...
Updates
Changelog: https://developers.openai.com/codex/c...
Releases: https://github.com/openai/codex/releases
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