Codex Essentials – AI Assisted Agentic Development Course
freeCodeCamp — Apr 14, 2026 — tutorial
Why watch
A comprehensive course on using OpenAI's Codex for AI-assisted agentic development workflows. Covers installation, authentication methods (subscription vs API keys), environment configuration, context window management (up to 400k tokens), session management, and common coding use cases. Ideal for developers new to AI-assisted coding tools who want to integrate Codex into their development workflow.