The course “Codex — Practical Guide” aims to help developers transition from a basic, intuitive use of Codex to a more systematic and efficient approach. While Codex is gaining popularity as a top tool for agentic development, many users only scratch the surface with simple prompts. This hands-on program focuses on understanding how Codex operates, building context, managing commands, and utilizing advanced features that differentiate regular users from power users.
The course starts with foundational principles, including how to work effectively with Codex, key commands, and the basics of context engineering. It then moves on to advanced functionalities, such as various input modes, agent skills, the Model Context Protocol (MCP), using the Codex SDK for custom integrations, and working in CLI, IDE, desktop applications, and web versions. Special emphasis is placed on Plan Mode, configuration management, and permissions, with in-depth discussions on their significance and application in real projects. Additionally, students will learn to use Codex not only for programming but also as a versatile intelligent assistant.
As a practical-oriented course, participants will create a complete real-world project to reinforce their skills in a working context. No special background is required, just an installed Codex and an active subscription. By the end of the course, learners will advance from beginners to confident power users, significantly enhancing their productivity and capability to develop high-quality software more efficiently.