Zero to Claude Certified Architect — Complete Exam Prep Series - Zero to Claude Certified Architect — Complete Beginner's Guide | Part 16: Path-Specific Rules

Welcome to Part 16 of the Zero to Claude Certified Architect series. In this lesson we cover Domain 3 Task 3.3: applying path-specific rules for conditional convention loading. If you have ever felt like one giant CLAUDE.md file creates noisy guidance and token waste, this part gives you the exact mental model and exam-ready decision rules to fix it. In this video, you will learn: - Why one-size-fits-all conventions fail in mixed codebases - How .claude/rules files use YAML frontmatter paths for conditional loading - How glob patterns route rules to matching files only - Why path-specific rules are superior for cross-cutting concerns like test files - When to choose path-specific rules vs subdirectory CLAUDE.md - How path scoping improves context focus and reduces wasted tokens - The anti-patterns that appear as exam trap answers Timestamps: 00:00 Welcome + quick recap 01:10 The one-size-fits-all problem 01:49 YAML paths frontmatter in .claude/rules 02:39 Glob pattern routing examples 03:31 Cross-cutting concerns and test file spread 04:11 Paths vs subdirectory CLAUDE.md decision rule 04:57 Token savings and context relevance 05:31 Anti-patterns to avoid 06:24 Five exam takeaways 07:16 Part 17 preview Key concepts covered include paths frontmatter, glob matching, conditional rule loading, context window optimization, and deterministic convention application. You will also see why inference is not a substitute for explicit path matching, and why broad patterns like double-star slash star defeat the whole purpose of scoped loading. This is Part 16 in the Complete Beginner's Guide path toward Claude Certified Architect. It builds directly on Part 15 (slash commands and skills) and prepares you for Part 17, where we shift to execution strategy and learn when to use Plan Mode versus Direct Execution. Coming up in Part 17: Plan Mode vs Direct Execution. We will cover architectural decision checkpoints, multi-file risk management, and when direct implementation is the better option for clear single-file changes. Keywords: Claude API, Anthropic, Claude Certified Architect, path-specific rules, YAML frontmatter, glob patterns, context optimization, token savings, CLAUDE.md, deterministic rule loading, Claude Code, AI engineering, certification exam, beginner guide #ClaudeCertifiedArchitect #AnthropicClaude #PathSpecificRules #ClaudeCode #YAML #AIAgents #AgenticAI #CertificationExam #AIEngineering #ClaudeAPI