A complete study system for the Codex Certified Architect (CCA) track. It combines the long-form guide, captured course notes, cheat sheets, and a local study app in one repo.
| Component | What it is |
|---|---|
/cac skill |
Codex skill that coaches you through exam prep |
app/ |
Next.js study dashboard with the imported 17-course library, progress tracking, and quiz review |
guides/ |
Entry point for long-form guides and study references |
courses/ |
Captured course notes, lesson indexes, and diagrams |
cheat/ |
Condensed cram sheets and quick-reference material |
| If you want to... | Open |
|---|---|
| Read the guide index | guides/README.md |
| Jump straight to the canonical exam guide | docs/cac-guide.md |
| Browse the captured course library | courses/README.md |
| Review the cheat sheets | cheat/README.md |
| Launch the study dashboard | app/ |
The repo now has four primary entry points:
guides/README.mdfor long-form orientation and study pathsdocs/README.mdfor canonical source documentscourses/README.mdfor the imported 17-course librarycheat/README.mdfor fast review material
The app in app/ mirrors the imported courses/ content so the study dashboard and repo content stay aligned.
The courses/ folder currently includes 17 Anthropic course captures, ranging from Claude 101 and Claude Code 101 through MCP, subagents, agent skills, and AI fluency tracks.
The quiz and long-form guide still map back to the five exam domains:
- Prompt Engineering & AI Fluency
- Codex Development
- Agentic Architecture
- Model Context Protocol
- Projects, Artifacts & Skills
- Start in guides/README.md to understand the overall study path.
- Read the main guide in docs/cac-guide.md.
- Work through the imported course notes in courses/README.md.
- Use cheat/CHEAT.md for review and memorisation.
- Open
app/for progress tracking and quiz practice.
| Resource | Purpose |
|---|---|
| Guides index | Long-form reference material in this repo |
| Docs index | Canonical source documents |
| Courses index | Lesson-by-lesson notes from captured training courses |
| Cheat index | Fast review sheets and memorisation aids |
| Anthropic Cookbook | Canonical code examples |
| Skilljar Training Courses | Official Anthropic training modules |
| claudecertifications.com | Certification portal and reference material |
cac/ # github.com/flexappdev/cac
├── README.md
├── LICENSE
├── guides/
│ └── README.md # Human-friendly guide index
├── docs/
│ ├── README.md # Canonical docs index
│ └── cac-guide.md # Comprehensive exam guide
├── courses/
│ ├── README.md # Index of the 17 imported course folders
│ └── */index.md # Per-course lesson navigation / capture status
├── .Codex/
│ └── skills/
│ └── cac/
│ └── SKILL.md # Codex /cac skill
├── app/ # Next.js study dashboard — localhost:24301
│ └── src/
└── cheat/
├── README.md # Cheat-sheet index
└── CHEAT.md # Condensed quick-reference guide
The /cac Codex skill acts as an exam coach. Install it once, then invoke from any Codex session.
Install:
mkdir -p ~/.Codex/skills/cac
curl -o ~/.Codex/skills/cac/SKILL.md \
https://raw.githubusercontent.com/flexappdev/cac/main/.Codex/skills/cac/SKILL.mdOr manually: copy .Codex/skills/cac/SKILL.md → ~/.Codex/skills/cac/SKILL.md
Usage:
/cac # Status + what to study next
/cac quiz # Random practice question
/cac domain 3 # Deep dive into exam domain 3
/cac cheat # Compact cheat sheet
/cac app # Launch study dashboard at localhost:24301
/cac plan # Personalised study plan
/cac resources # Curated links
MIT — Mat Siems, 2026