ast-grep

74 / 100 · Review before installing

Check before installing. Some of what it can do is expected: a coding skill usually runs build and test commands.

By code-yeongyu/oh-my-openagent (GitHub) · coding · 70,906 stars · scanned at commit 83373dc

Searches and rewrites code by AST shape across 25 languages. Use when the target is a syntax pattern (every call/class/import shaped like X, a codemod, a YAML rule) rather than literal text; for plain strings, comments, or filenames, use rg.

Works with any agent that supports SKILL.md skills.

What this skill can do

Downloads and installs other software

This is disclosed by the author in the skill's SKILL.md or README.

Found in 46 places.

packages/shared-skills/skills/ast-grep/README.md, line 14That is it. The wrapper script is single-file Python 3 stdlib; no `pip install` needed. The installer tries `brew` → `npm` → `cargo` → `pip` → `nix` → `mise` →
packages/shared-skills/skills/ast-grep/README.md, line 110- `brew install ast-grep` (macOS / linuxbrew)
packages/shared-skills/skills/ast-grep/README.md, line 111- `npm install -g @ast-grep/cli` (any OS with Node)

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packages/shared-skills/skills/ast-grep/README.md, line 112- `cargo install ast-grep --locked` (any OS with Rust)
packages/shared-skills/skills/ast-grep/README.md, line 113- `pip install ast-grep-cli` (any OS with Python)
packages/shared-skills/skills/ast-grep/install.ps1, line 176. cargo binstall / cargo install
packages/shared-skills/skills/ast-grep/install.ps1, line 112Log "trying: npm install -g @ast-grep/cli"
packages/shared-skills/skills/ast-grep/install.ps1, line 113try { npm install -g '@ast-grep/cli'; return $LASTEXITCODE -eq 0 }
packages/shared-skills/skills/ast-grep/install.ps1, line 123Log "trying: cargo install ast-grep --locked"
packages/shared-skills/skills/ast-grep/install.ps1, line 124try { cargo install ast-grep --locked; return $LASTEXITCODE -eq 0 }
packages/shared-skills/skills/ast-grep/install.ps1, line 134Log "trying: $pip install --user ast-grep-cli"
packages/shared-skills/skills/ast-grep/install.ps1, line 136if ($pip -eq 'py') { py -m pip install --user ast-grep-cli }
packages/shared-skills/skills/ast-grep/install.ps1, line 137else { & $pip install --user ast-grep-cli }
packages/shared-skills/skills/ast-grep/install.ps1, line 233Err " npm install -g @ast-grep/cli # any OS with Node"
packages/shared-skills/skills/ast-grep/install.ps1, line 234Err " cargo install ast-grep --locked # any OS with Rust"
packages/shared-skills/skills/ast-grep/install.ps1, line 235Err " pip install ast-grep-cli # any OS with Python"
packages/shared-skills/skills/ast-grep/install.sh, line 119log "trying: brew install ast-grep"
packages/shared-skills/skills/ast-grep/install.sh, line 120brew install ast-grep && return 0 || return 1
packages/shared-skills/skills/ast-grep/install.sh, line 125log "trying: npm install -g @ast-grep/cli"
packages/shared-skills/skills/ast-grep/install.sh, line 126npm install -g @ast-grep/cli && return 0 || return 1

and 26 more places

Changes files outside its own folder

The author does not mention this.

Found in 5 places.

packages/shared-skills/skills/ast-grep/README.md, line 19ln -s /path/to/your/clone ~/.agents/skills/ast-grep
packages/shared-skills/skills/ast-grep/references/cli.md, line 196sg completions bash >> ~/.bashrc
packages/shared-skills/skills/ast-grep/references/cli.md, line 198sg completions fish > ~/.config/fish/completions/sg.fish

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packages/shared-skills/skills/ast-grep/references/install.md, line 101sudo mv /tmp/ast-grep/ast-grep /usr/local/bin/sg
packages/shared-skills/skills/ast-grep/references/install.md, line 166| GitHub binary | `rm ${XDG_CACHE_HOME:-~/.cache}/omo-ast-grep/bin/sg` |

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 12 places.

packages/shared-skills/skills/ast-grep/SKILL.md, line 67sg run -p P -r R --json=compact . # pass 1: see what would change
packages/shared-skills/skills/ast-grep/SKILL.md, line 82python3 scripts/ast_grep_helper.py search 'console.log($MSG)' src/ --lang ts
packages/shared-skills/skills/ast-grep/SKILL.md, line 97python3 scripts/ast_grep_helper.py replace 'console.log($MSG)' 'logger.info($MSG)' src/ --lang ts

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packages/shared-skills/skills/ast-grep/SKILL.md, line 112python3 scripts/ast_grep_helper.py scan src/
packages/shared-skills/skills/ast-grep/SKILL.md, line 131python3 scripts/ast_grep_helper.py validate '\w+' --lang ts
packages/shared-skills/skills/ast-grep/SKILL.md, line 141python3 scripts/ast_grep_helper.py langs # list 25 supported languages and aliases
packages/shared-skills/skills/ast-grep/SKILL.md, line 156sg run -p 'console.log($MSG)' --lang ts src/
packages/shared-skills/skills/ast-grep/scripts/ast_grep_helper.py, line 187out = subprocess.run(
packages/shared-skills/skills/ast-grep/scripts/ast_grep_helper.py, line 399) -> subprocess.CompletedProcess[str]:
packages/shared-skills/skills/ast-grep/scripts/ast_grep_helper.py, line 404return subprocess.run(
packages/shared-skills/skills/ast-grep/scripts/ast_grep_helper.py, line 410except subprocess.TimeoutExpired:
packages/shared-skills/skills/ast-grep/scripts/ast_grep_helper.py, line 618return subprocess.run(cmd).returncode

Sends data to these websites: github.com

The author does not mention this.

Found in 4 places.

packages/shared-skills/skills/ast-grep/install.ps1, line 163Invoke-WebRequest -Uri $url -OutFile (Join-Path $tmp $asset) -UseBasicParsing
packages/shared-skills/skills/ast-grep/install.sh, line 200curl -fsSL "$URL" -o "$TMP/$ASSET" || return 3
packages/shared-skills/skills/ast-grep/install.sh, line 202wget -q "$URL" -O "$TMP/$ASSET" || return 3

Show 1 more

packages/shared-skills/skills/ast-grep/references/install.md, line 99curl -fsSL "https://github.com/ast-grep/ast-grep/releases/download/${VERSION}/app-${TRIPLE}.zip" -o /tmp/ast-grep.zip

Safer alternatives

Low-risk skills in the same category (coding) that look related. Check that one does what you need.

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=$(mktemp -d) && git clone --quiet --filter=blob:none --no-checkout 'https://github.com/code-yeongyu/oh-my-openagent' "$d" && git -C "$d" checkout --quiet '83373dcbb545ae2336e58abb46af028e9ad29a9e' -- 'packages/shared-skills/skills/ast-grep' && mkdir -p ~/.agents/skills && cp -R "$d"/'packages/shared-skills/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
2026-11-14	`83373dc`	74
2026-11-10	`f922d6a`	74
2026-11-08	`79d6a05`	74
2026-11-07	`a815fdf`	74