git:20260710.2925510 to git:20260710.62afd0f
21 added, 11 removed. Audit B to A.
---
- title: "ast-grep Structural Code Search and Rewrite"
+ name: "ast-grep Structural Code Search and Rewrite"
+ slug: "ast-grep-structural-code-search-rewrite"
description: "Use ast-grep (sg) to search, lint, and rewrite code across large codebases using AST pattern matching. A blazing-fast alternative to regex-based code transformations that understands syntax structure."
+ github_stars: 13245
verification: "security_reviewed"
source: "https://github.com/ast-grep/ast-grep"
- category:
- - "Code Quality & Review"
- framework:
- - "Claude Code"
+ category: "Code Quality & Review"
+ framework: "Claude Code"
tool_ecosystem:
github_repo: "ast-grep/ast-grep"
github_stars: 13245
---
# ast-grep Structural Code Search and Rewrite
Use ast-grep (sg) to search, lint, and rewrite code across large codebases using AST pattern matching. A blazing-fast alternative to regex-based code transformations that understands syntax structure.
## Installation
- Choose whichever fits your setup:
+ Use the upstream install or setup path that matches your environment:
+ - npm install --global @ast-grep/cli
+ - pip install ast-grep-cli
+ - brew install ast-grep
+ - cargo install ast-grep --locked
- 1. Copy this skill folder into your local skills directory.
- 2. Clone the repo and symlink or copy the skill into your agent workspace.
- 3. Add the repo as a git submodule if you manage shared skills centrally.
- 4. Install it through your internal provisioning or packaging workflow.
- 5. Download the folder directly from GitHub and place it in your skills collection.
+ Requirements and caveats from upstream:
+ - You can use $ sign + upper case letters as a [wildcard](https://en.wikipedia.org/wiki/Wildcard_character), e.g. $MATCH, to match any single AST node. Think of it as [regular expression dot](https://regexone.com/lesson...
+ - You can install it from [npm](https://docs.npmjs.com/downloading-and-installing-node-js-and-npm), [pip](https://pypi.org/), [cargo](https://doc.rust-lang.org/cargo/getting-started/installation.html), [cargo-binstall](...
+
+ Basic usage or getting-started notes:
+ - bash
+ - # pnpm approve-builds may be needed
+ - <details>
+
+ - Source: https://github.com/ast-grep/ast-grep
+ - Extracted from upstream docs: https://raw.githubusercontent.com/ast-grep/ast-grep/HEAD/README.md
## Source
- [Agent Skill Exchange](https://agentskillexchange.com/skills/ast-grep-structural-code-search-rewrite/)