The description lists no concrete actions or capabilities—it only describes when to use the skill ('debug, fix a bug, investigate an error') but never says what the skill actually does (e.g., 'analyzes stack traces, sets breakpoints, traces code paths'). The verbs used are trigger conditions, not capability descriptions.

The 'when' clause is explicit and well-articulated with multiple trigger scenarios. However, the 'what does this do' part is essentially absent—there is no description of the skill's capabilities, methodology, or outputs. It only tells Claude when to select it, not what it provides.

Excellent coverage of natural user terms: 'debug', 'fix a bug', 'investigate an error', 'root cause analysis', 'errors', 'stack traces', 'unexpected behavior', 'stopped working'. These are all phrases users would naturally say when they need debugging help.

The debugging/error investigation domain is fairly specific, and the trigger terms are well-targeted. However, without specifying what kind of debugging (e.g., language, framework, approach), it could overlap with language-specific debugging skills or general code review skills.

Generally efficient and well-structured, but includes some unnecessary elaboration (e.g., 'Fixing symptoms creates whack-a-mole debugging' is motivational rather than instructional, and some red flag explanations are slightly verbose). Most content earns its place, but could be tightened by ~15-20%.

Provides concrete, executable guidance throughout: specific git commands, clear step-by-step processes, explicit output formats (debug report template), specific thresholds (3-strike rule, >5 files), and actionable patterns to check. The structured debug report format is copy-paste ready.

Excellent multi-phase workflow with clear sequencing (Phases 1-5), explicit validation checkpoints (reproduce before fixing, verify hypothesis before implementing, fresh verification after fix, run full test suite), and a well-defined feedback loop (3-strike rule with escalation options). Error recovery paths are clearly specified.

The content is well-organized with clear phases and sections, but it's a fairly long monolithic document (~150 lines) with no references to external files for detailed content like pattern analysis examples or debug report templates. The pattern analysis section and debug report template could be split out for better progressive disclosure.