neondatabase

Ast Grep — Testing skill for Claude Code

Testing community

This command helps to create and test ast-grep rules for code quality enforcement.

How to install Ast Grep

Installs to ~/.claude/commands/neondatabase-claude_astgrep-ast_grep.md

Terminal

mkdir -p ~/.claude/commands && curl -fsSL https://raw.githubusercontent.com/neondatabase/claude_astgrep/HEAD/.claude/commands/ast_grep.md -o ~/.claude/commands/neondatabase-claude_astgrep-ast_grep.md

Restart Claude Code, or start a new session, for it to be picked up.

What Ast Grep does

allowed-tools: Bash(ast-grep:), Bash(uv run ast-grep:), WebFetch(domain:ast-grep.github.io) description: This command helps to create and test ast-grep rules for code quality enforcement.

Recall the following ast-grep rules. You will need them for the next task. If this guideline misses something, read the web (e.g. https://ast-grep.github.io/reference/rule.html)

ast-grep YAML Rule Writing Guide

Core Concepts

ast-grep operates on Concrete Syntax Trees using Tree-sitter parser

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