Lean body with no padding or explanations of concepts Claude already knows; the format spec and examples each earn their tokens. Could be tightened only marginally in the Tips section.

Provides a concrete, copy-paste-ready output format plus three fully-worked examples with real values (records, owner_ids, SQL fragments), giving unambiguous guidance on what to produce.

Single-purpose output task with an unambiguous format and a 'When to use which depth' section sequencing the approach; no destructive/batch operations require validation checkpoints, so the simple-skill allowance applies.

Well-organized into Format, depth guidance, Examples, and Tips with no external bundle files and no nested references; content fits cleanly in one overview file.

Names multiple concrete actions — 'Trace and document how data transforms', 'showing intermediate state at each step with concrete example values' — rather than vague language.

Explicitly answers what ('Trace and document how data transforms...showing intermediate state') and when via a clear 'Use when...' clause with several concrete triggers.

Natural phrasings a user would say appear directly: 'explaining a data pipeline', 'how does X get to Y', 'code review or design doc', 'tracing how a value changes across function calls'.

Occupies a clear niche — annotated dataflow tracing — with triggers (pipeline tracing, 'how does X get to Y') unlikely to fire for unrelated skills.