Names the domain ('root cause analysis and debugging protocols') and implies actions but doesn't list concrete specific actions like 'analyze stack traces, trace variable state, identify failing assertions'. The phrase 'protocols' is somewhat abstract.

Clearly answers both what ('Root cause analysis and debugging protocols') and when ('Use when encountering errors, test failures, unexpected behavior, stack traces, or when code behaves differently than expected') with explicit trigger guidance.

Includes strong natural keywords users would say: 'errors', 'test failures', 'unexpected behavior', 'stack traces', 'code behaves differently than expected'. These cover common variations of how users describe debugging needs.

While debugging is a specific domain, 'errors' and 'unexpected behavior' are broad terms that could overlap with general coding assistance skills or error handling skills. The triggers could conflict with skills focused on specific error types or testing frameworks.

The content is lean and efficient, avoiding explanations of concepts Claude already knows. Each section provides actionable guidance without padding or unnecessary context.

Provides structured guidance and clear steps, but lacks concrete executable examples. The debugging process is described abstractly rather than with specific code snippets or commands that could be copy-pasted.

The 6-step debugging process is clearly sequenced with logical progression. The integration section provides explicit verification checkpoints (CI passes, tests pass) before proceeding with commits.

Excellent structure with a concise overview and well-signaled one-level-deep references to detailed materials (root-cause-analysis.md, error-patterns.md, debugging-tools.md). Content is appropriately split between overview and reference files.