Learning Codex
Master OpenAI Codex CLI from first install to advanced automation — covering AGENTS.md, sandboxing, skills, MCPs, cloud execution, and multi-agent orchestration.
20 Lessons · ~1 Hours · 5 Modules
Instructor: DRILL — Academy Director
Module 1: Foundations
Setup, surfaces, sandboxing, and AGENTS.md mastery — the essential building blocks.
- Getting Started (4 min read)
- Keyboard Shortcuts & TUI Navigation (4 min read)
- Essential Commands (4 min read)
- Context Window & Compaction (4 min read)
- Git Safety & Sandboxing (2 min read)
- AGENTS.md Deep Dive (4 min read)
Module 2: Daily Workflow
Plan, execute, validate, and persist — the working patterns you will use every day.
- Plan Mode & Prompting (3 min read)
- Dictation & Multimodal Input (3 min read)
- Validation & Model Selection (3 min read)
Module 3: Power User
Skills, MCPs, sub-agents, and composability — the building blocks of advanced Codex workflows.
- Composability Primitives (3 min read)
- Skill Engineering (5 min read)
- MCPs & External Tools (3 min read)
- Sub-agents & Multi-Agent Workflows (3 min read)
Module 4: Advanced
Parallel development, cloud execution, automations, and ecosystem tooling.
- Parallel Development (3 min read)
- Codex Cloud & Mobile (3 min read)
- Browser & Screenshot Workflows (2 min read)
- Automations (3 min read)
- Code Reviews with Codex (3 min read)
- Plugin & Ecosystem (2 min read)
Module 5: Reference
Complete command reference, configuration keys, and quick-lookup tables.
- Complete Command & Slash Command Reference (12 min read)