Pnpm Engine
teambit/bit
Work on the pnpm Rust engine (@pnpm/napi, the pacquet crates) that bit install runs through.
Guides ccusage structural code searches with ast-grep. An agent skill from ccusage/ccusage.
Install Ast Grep
$ npx skills add ccusage/ccusage --skill ast-grep -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install ccusage/ccusage ast-grep --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/ccusage/ccusage.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.agents/skills/ast-grep .claude/skills/ast-grep && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "ast-grep" agent skill from https://github.com/ccusage/ccusage/tree/main/.agents/skills/ast-grep into .claude/skills/ast-grep/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "ast-grep", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/ccusage/ccusage/tree/main/.agents/skills/ast-grepType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add ccusage/ccusage --skill ast-grep -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install ccusage/ccusage ast-grep --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/ccusage/ccusage.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.agents/skills/ast-grep .agents/skills/ast-grep && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "ast-grep" agent skill from https://github.com/ccusage/ccusage/tree/main/.agents/skills/ast-grep into .agents/skills/ast-grep/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "ast-grep", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add ccusage/ccusage --skill ast-grep -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install ccusage/ccusage ast-grep --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/ccusage/ccusage.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.agents/skills/ast-grep .cursor/skills/ast-grep && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "ast-grep" agent skill from https://github.com/ccusage/ccusage/tree/main/.agents/skills/ast-grep into .cursor/skills/ast-grep/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "ast-grep", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/ccusage/ccusage.git --path .agents/skills/ast-grep--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add ccusage/ccusage --skill ast-grep -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install ccusage/ccusage ast-grep --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/ccusage/ccusage.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.agents/skills/ast-grep .gemini/skills/ast-grep && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "ast-grep" agent skill from https://github.com/ccusage/ccusage/tree/main/.agents/skills/ast-grep into .gemini/skills/ast-grep/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "ast-grep", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install ccusage/ccusage ast-grepInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add ccusage/ccusage --skill ast-grep -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/ccusage/ccusage.git skills-src && mkdir -p .github/skills && cp -r skills-src/.agents/skills/ast-grep .github/skills/ast-grep && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "ast-grep" agent skill from https://github.com/ccusage/ccusage/tree/main/.agents/skills/ast-grep into .github/skills/ast-grep/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "ast-grep", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add ccusage/ccusage --skill ast-grep -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install ccusage/ccusage ast-grep --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/ccusage/ccusage.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.agents/skills/ast-grep .opencode/skills/ast-grep && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "ast-grep" agent skill from https://github.com/ccusage/ccusage/tree/main/.agents/skills/ast-grep into .opencode/skills/ast-grep/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "ast-grep", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
ast-grep- GitHub stars
- 19k
- Token cost
- ~296 tokens
- SKILL.md length
- 140 words
- Files
- 1
- Skills in repo
- 17
- Repo updated
- First seen
- Licence
- Custom licence
At a glance
Guides ccusage structural code searches with ast-grep. An agent skill from ccusage/ccusage.
- TypeScript syntax patterns
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
- Validating migrations
- Writing AST-based search commands
What it does
Ast Grep is an agent skill from ccusage/ccusage. Guides ccusage structural code searches with ast-grep. Use when finding Rust or TypeScript syntax patterns, validating migrations, or writing AST-based search commands.
Its SKILL.md is about 300 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
It sits in Development, covering Codebase onboarding. It works with Rust and TypeScript.
When your agent uses it
- TypeScript syntax patterns
- Validating migrations
- Writing AST-based search commands
Example prompts
- “Use the ast-grep skill to guide ccusage structural code searches with ast-grep. An agent skill from ccusage/ccusage”
- “/ast-grep”
What it can do on your machine
Read from SKILL.md and the folder at commit 5ca8d8e. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md.
From the folder's file list and the shell code blocks in SKILL.md.
Network
Links to these hosts (documentation or services it may open):
ast-grep.github.io
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Ast Grep loads about 296 tokens when it runs. Until then it costs about 44 tokens; SKILL.md has 140 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
Its licence (Custom licence) doesn't allow us to republish the file, so here is its outline and opening line. It has 140 words (~296 tokens).
“Reach for ast-grep when a search depends on syntax structure — a macro call with particular arguments, a match arm shape, an attribute on an item. rg is faster for plain text, and reduce-similarities owns duplicate-code detection.”
- name
- ast-grep
Files
Just SKILL.md in .agents/skills/ast-grep of ccusage/ccusage.
Open the folder on GitHubat commit 5ca8d8e
Compare with similar skills
Ast Grep next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Ast Grep this skillccusage/ccusage | 19k | — | ~296 | Automated safety check: Pass | Custom licence | |
| Pnpm Engineteambit/bit | 18k | — | ~1.9k | Automated safety check: Pass | Custom licence | |
| Testing Changespnpm/pnpm | 37k | — | ~1.1k | Automated safety check: Pass | MIT | |
| jscpd Code Migration Trackerkucherenko/jscpd | 6.4k | — | ~5k | Automated safety check: Pass | MIT | |
| Deepwiki Rssopaco/deepwiki-rs | 3.1k | — | ~748 | Automated safety check: Pass | MIT | |
| Cross-Language Coding Standardszereight/gitlab-mcp | 2k | 1 repos | ~1.4k | Automated safety check: Pass | MIT |
Similar skills
Testing Changes
pnpm/pnpm
Run the tests that cover a change in the pnpm repository, in the Rust workspace (pnpm/, pnpr/) or the TypeScript CLI (pnpm11/), and recognize the cases where a scoped run passes without testing…
jscpd Code Migration Tracker
kucherenko/jscpd
Measures a code port between languages or frameworks with jscpd's function-level comparison, porting tests before code and tracking what is left unmatched.
Deepwiki Rs
sopaco/deepwiki-rs
AI-powered Rust documentation generation engine for comprehensive codebase analysis, C4 architecture diagrams, and automated technical documentation.
Cross-Language Coding Standards
zereight/gitlab-mcp
Shared reference for naming, function size, complexity and error handling rules that reviewer agents apply across TypeScript, Python, Go, Rust, Java, C# and Swift.
- Official
Code Migration
anthropics/code-migration-kit-with-claude-code
Run a large-scale language migration with the six-step process: create the map and the rules, stress-test the rules, translate everything, compile, run it, match behavior.
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Related
Works with
Categories
Questions about Ast Grep
What does Ast Grep do?
Guides ccusage structural code searches with ast-grep. An agent skill from ccusage/ccusage. Ast Grep is an agent skill from ccusage/ccusage. Guides ccusage structural code searches with ast-grep.
When should I use Ast Grep?
Ast Grep fits situations like: typeScript syntax patterns; validating migrations; writing AST-based search commands.
How do I install Ast Grep in Claude Code?
Run `npx skills add ccusage/ccusage --skill ast-grep -a claude-code`. Or copy the skill folder (.agents/skills/ast-grep in ccusage/ccusage) into .claude/skills/ast-grep in your project. Claude Code loads it when a task matches its description.
How do I install Ast Grep in Codex?
Run `npx skills add ccusage/ccusage --skill ast-grep -a codex`. Or copy the skill folder (.agents/skills/ast-grep in ccusage/ccusage) into .agents/skills/ast-grep in your project. Codex loads it when a task matches its description.
Can I use Ast Grep in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add ccusage/ccusage --skill ast-grep -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/ast-grep, .gemini/skills/ast-grep, .github/skills/ast-grep and .opencode/skills/ast-grep in your project.
What does Ast Grep need to run?
SKILL.md names no scripts, command-line tools or credentials: Ast Grep is instructions for the agent only.
Does Ast Grep access the network?
SKILL.md names 1 domain. As links in the text: ast-grep.github.io. This is read from the text; nothing was executed.
Is Ast Grep safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does Ast Grep use?
Ast Grep has a licence file (the repository's licence) that doesn't match a standard licence. Read it on GitHub before reusing the skill.
How many tokens does Ast Grep use?
About 296 tokens (SKILL.md is roughly 1.2k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to Ast Grep?
Skills that share tags, products or a category with Ast Grep: Pnpm Engine (teambit/bit, 18k stars), Testing Changes (pnpm/pnpm, 37k stars), jscpd Code Migration Tracker (kucherenko/jscpd, 6.4k stars) and Deepwiki Rs (sopaco/deepwiki-rs, 3.1k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Ast Grep?
ccusage (a GitHub organization) maintains it in ccusage/ccusage, which has 18,912 GitHub stars. The repository holds 17 skills in this directory. The repository was last updated on October 8, 2026.
Source: ccusage/ccusage on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.