Ast Grep

This teaches Claude how to write and debug ast-grep rules, the AST-based code search and transformation tool. It walks through the full workflow from inspecting AST structure to writing YAML rules with patterns, meta variables, and constraints. The 46 best practices are categorized by impact, which is genuinely useful since ast-grep's relational rules and meta variable system have real gotchas. The recurring emphasis on "always use stopBy: end" hints at a common footgun. If you're setting up linting rules or doing large-scale code migrations and want Claude to understand ast-grep's pattern syntax without hallucinating invalid YAML, this covers the essentials.

Install to Claude Code

npx -y skills add pproenca/dot-skills --skill ast-grep --agent claude-code