Claude Certified Architect — Foundations

Pass CCA-F with the STACK Diagnostic™

A scenario-based study system for engineers who think in process flows — not ML theory. Learn the method, drill 638 practice questions, and walk in confident.

638 interactive · 136 written MCQs · 11 speed/multi drills

Get full access — $49 Open study app →
720
scaled score to pass
638
practice questions
5
exam domains
7
day study plan

The STACK Diagnostic™

Justin Fowler's framework for solving any CCA-F scenario in under 60 seconds.

S
Spot
What broke? Loop, tool, config, context, or coordinator?
T
Trace
Which layer owns it? Prompt, hook, schema, code, or CLAUDE.md?
A
Assess
Deterministic or probabilistic? High stakes = enforcement required.
C
Classify
Root cause or symptom patch? Retries and classifiers are usually patches.
K
Kill
Eliminate distractors. Pick the fix that removes root cause at the right layer.
Golden rule: Correct answers remove the architectural root cause. Distractors bolt more infrastructure onto broken design.

Five exam domains

Weighted by percentage — study time should follow these ratios.

D1 Agentic Architecture
27%
D2 Tools & Integrations
18%
D3 Claude Code
20%
D4 Prompting & Output
20%
D5 Context & Reliability
15%

Answers to always rule out

These distractors appear on nearly every exam — memorize once.

✕ Using sentiment to decide escalation
✕ Adding a classifier as the first fix
✕ Parsing "I'm done" text to stop loops
✕ Returning empty list when a service fails
✕ Using Batch API for blocking pre-merge checks
✕ Trusting tool_use output without validation

What's included

Full Access — $49 one-time · app, curriculum, downloads, and community.

✓ Interactive study app — 638 practice questions, flashcards, analytics
✓ 8 guided lessons + 24-topic curriculum
✓ 7-day study roadmap + master plan + downloads
✓ Private study community on Whop
View pricing → Preview 7-day plan

Built for practitioners

Every other CCA-F prep resource is written by ML engineers for ML engineers. This system is built for people who think in decision trees and business outcomes — by Justin Fowler, a RevOps leader who needed to pass a scenario-based exam without a CS degree.