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ast-grep

Convert natural language queries into ast-grep rules for structural code search.

2|Updated Nov 16, 2025
Search Tags:#developer-tools#code-analysis#tree-sitter#ast#pattern-matching#code-search
One-click install
npx skills add https://github.com/lwyBZss8924d/ReCodeAgent --skill ast-grep-lwybzss8924d
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: ast-grep
Source: https://github.com/lwyBZss8924d/ReCodeAgent/tree/main/.agents/skills/ast-grep
Command: npx skills add https://github.com/lwyBZss8924d/ReCodeAgent --skill ast-grep-lwybzss8924d

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

Structural code search and analysis using AST patterns to find constructs that text search misses.

Core Features & Use Cases

  • Translate natural language queries into ast-grep rules for AST-based searches across codebases.
  • Provide guidance on crafting rules using pattern, kind, inside, has, and composites.
  • Use metatvariables to capture dynamic parts and perform precise matches across languages.

Quick Start

Provide a description of the code pattern you want to find, and I will generate an ast-grep rule to locate matches in your project.

Frequently Asked Questions about ast-grep

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I search for structural code patterns instead of plain text?▼

Structural code search uses AST patterns to find specific code constructs that plain text search misses. By translating natural language queries into ast-grep rules, you locate precise matches across codebases.

What is the best way to convert natural language queries into AST-based rules?▼

You can convert natural language queries into AST-based rules by providing a description of the code pattern. The system generates an ast-grep rule to locate corresponding matches in your project.

Can I use metavariables to capture dynamic parts during code analysis?▼

Metavariables capture dynamic code parts during AST pattern matching. They enable precise matches across multiple languages by binding specific structural elements within your generated ast-grep rules.

How do relational and composite rules work for tree-sitter code search?▼

Relational and composite rules combine structural constraints for tree-sitter code search using pattern, kind, inside, and has operators. They validate complex language constructs across codebases.

Does AST-based code search work across multiple programming languages?▼

AST-based code search works across multiple programming languages. It applies rules to debug complex language constructs and validate matches using tree-sitter syntax across your codebase.

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