Lists multiple specific concrete actions: 'Search code by AST structure', 'Find semantic patterns like function calls, imports, class definitions'. Clearly distinguishes from text-based search by specifying structural/semantic pattern matching.

Clearly answers both 'what' (search code by AST structure, find semantic patterns like function calls, imports, class definitions) and 'when' (explicit 'Triggers on:' clause with multiple natural trigger phrases).

Excellent coverage of natural trigger terms: 'find all calls to X', 'search for pattern', 'refactor usages', 'find where function is used', 'structural search', 'ast-grep', 'sg'. These are phrases users would naturally say when needing this capability.

Clearly distinguishes itself from generic code search or text-based grep by emphasizing AST/structural search, semantic patterns, and the specific tool ast-grep/sg. Unlikely to conflict with regular search or refactoring skills.

The content is lean and efficient, using tables and code examples without unnecessary explanation. It assumes Claude knows what AST search is and jumps straight to syntax and commands.

Every pattern is a copy-paste ready command with concrete examples across multiple languages. The quick reference table provides immediately executable commands for all common tasks.

This is a single-purpose search/replace skill. The refactoring workflow (preview with -r, then apply with --rewrite) provides an implicit validation checkpoint. For a non-destructive search tool, the workflow is clear and unambiguous.

The skill provides a concise overview with essential patterns inline, then clearly signals one-level-deep references to language-specific patterns, security patterns, and advanced usage in the Additional Resources section.