ast-grep

92 / 100 · Low risk

Fine to try. Some of what it can do is expected: a coding skill usually runs build and test commands.

By ain3sh/.agents (GitHub) · coding · 14 stars · scanned at commit 4ddf141

Guide for writing ast-grep rules to perform structural (AST-based) code search and analysis.

Works with any agent that supports SKILL.md skills.

What this skill can do

Connects to the internet

The author does not mention this.

Found in 4 places.

skills/ast-grep/SKILL.md, line 77echo "async function test() { await fetch(); }" | ast-grep scan --inline-rules "id: test
skills/ast-grep/SKILL.md, line 126ast-grep run --pattern 'async function example() { await fetch(); }' \
skills/ast-grep/SKILL.md, line 159echo "const x = await fetch();" | ast-grep scan --inline-rules "id: test

Show 1 more

skills/ast-grep/SKILL.md, line 167echo "const x = await fetch();" | ast-grep scan --inline-rules "..." --stdin --json

Runs commands on your computer

This is disclosed by the author in the skill's SKILL.md or README. Expected for a coding skill.

Found in 15 places.

skills/ast-grep/SKILL.md, line 77echo "async function test() { await fetch(); }" | ast-grep scan --inline-rules "id: test
skills/ast-grep/SKILL.md, line 88ast-grep scan --rule test_rule.yml test_example.js
skills/ast-grep/SKILL.md, line 103ast-grep run --pattern 'console.log($ARG)' --lang javascript /path/to/project

Show 12 more

skills/ast-grep/SKILL.md, line 108ast-grep scan --rule my_rule.yml /path/to/project
skills/ast-grep/SKILL.md, line 113ast-grep scan --inline-rules "id: my-rule
skills/ast-grep/SKILL.md, line 126ast-grep run --pattern 'async function example() { await fetch(); }' \
skills/ast-grep/SKILL.md, line 144ast-grep run --pattern 'class User { constructor() {} }' \
skills/ast-grep/SKILL.md, line 159echo "const x = await fetch();" | ast-grep scan --inline-rules "id: test
skills/ast-grep/SKILL.md, line 167echo "const x = await fetch();" | ast-grep scan --inline-rules "..." --stdin --json
skills/ast-grep/SKILL.md, line 176ast-grep run --pattern 'console.log($ARG)' --lang javascript .
skills/ast-grep/SKILL.md, line 196ast-grep scan --rule my_rule.yml /path/to/project
skills/ast-grep/SKILL.md, line 264ast-grep scan --inline-rules "rule: {pattern: 'console.log(\$ARG)'}" .
skills/ast-grep/SKILL.md, line 276ast-grep scan --inline-rules "id: async-await
skills/ast-grep/SKILL.md, line 290ast-grep scan --inline-rules "id: console-in-class
skills/ast-grep/SKILL.md, line 303ast-grep scan --inline-rules "id: async-no-trycatch

Install

Paste this into your terminal. It downloads exactly the version we scanned, not whatever is newest.

if [ -e ~/.agents/skills/'ast-grep' ] || [ -L ~/.agents/skills/'ast-grep' ]; then echo 'A skill folder named ast-grep already exists — not replacing it' >&2; false; else d=$(mktemp -d) && git clone --quiet --filter=blob:none --no-checkout 'https://github.com/ain3sh/.agents' "$d" && git -C "$d" checkout --quiet '4ddf141db8b6d6a225ad100c3d9589932b7163fd' -- 'skills/ast-grep' && mkdir -p ~/.agents/skills && cp -R "$d"/'skills/ast-grep' ~/.agents/skills/'ast-grep' && rm -rf "$d"; fi

Codex reads ~/.agents/skills directly. For Claude Code, Cursor, Copilot, Gemini CLI, Antigravity or OpenCode, also link it. For Claude Code: ln -s ~/.agents/skills/'ast-grep' ~/.claude/skills/'ast-grep' (other agents: ~/.cursor/skills, ~/.copilot/skills, ~/.gemini/skills, ~/.gemini/config/skills, ~/.config/opencode/skills). Or install through the finder skill, which does both.

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Score history

Date	Version	Score
2026-11-11	`4ddf141`	92