Ast Grep
ccusage/ccusage
Guides ccusage structural code searches with ast-grep. An agent skill from ccusage/ccusage.
A skill your agent uses when analyzing complex codebases for security vulnerabilities, performance issues, and structural patterns - provides systematic AST-based approach using ast-grep for…
Custom licenceAuto-check passed
Install Ast Grep Code Analysis
$ npx skills add Sidiora-Labs/centra-llm-agents --skill ast-grep-code-analysis -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install Sidiora-Labs/centra-llm-agents ast-grep-code-analysis --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/Sidiora-Labs/centra-llm-agents.git skills-src && mkdir -p .claude/skills && cp -r skills-src/protocol/skills/ast-grep-code-analysis .claude/skills/ast-grep-code-analysis && 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-code-analysis" agent skill from https://github.com/Sidiora-Labs/centra-llm-agents/tree/main/protocol/skills/ast-grep-code-analysis into .claude/skills/ast-grep-code-analysis/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "ast-grep-code-analysis", 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/Sidiora-Labs/centra-llm-agents/tree/main/protocol/skills/ast-grep-code-analysisType 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 Sidiora-Labs/centra-llm-agents --skill ast-grep-code-analysis -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install Sidiora-Labs/centra-llm-agents ast-grep-code-analysis --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Sidiora-Labs/centra-llm-agents.git skills-src && mkdir -p .agents/skills && cp -r skills-src/protocol/skills/ast-grep-code-analysis .agents/skills/ast-grep-code-analysis && 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-code-analysis" agent skill from https://github.com/Sidiora-Labs/centra-llm-agents/tree/main/protocol/skills/ast-grep-code-analysis into .agents/skills/ast-grep-code-analysis/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "ast-grep-code-analysis", 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 Sidiora-Labs/centra-llm-agents --skill ast-grep-code-analysis -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install Sidiora-Labs/centra-llm-agents ast-grep-code-analysis --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Sidiora-Labs/centra-llm-agents.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/protocol/skills/ast-grep-code-analysis .cursor/skills/ast-grep-code-analysis && 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-code-analysis" agent skill from https://github.com/Sidiora-Labs/centra-llm-agents/tree/main/protocol/skills/ast-grep-code-analysis into .cursor/skills/ast-grep-code-analysis/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "ast-grep-code-analysis", 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/Sidiora-Labs/centra-llm-agents.git --path protocol/skills/ast-grep-code-analysis--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 Sidiora-Labs/centra-llm-agents --skill ast-grep-code-analysis -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install Sidiora-Labs/centra-llm-agents ast-grep-code-analysis --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Sidiora-Labs/centra-llm-agents.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/protocol/skills/ast-grep-code-analysis .gemini/skills/ast-grep-code-analysis && 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-code-analysis" agent skill from https://github.com/Sidiora-Labs/centra-llm-agents/tree/main/protocol/skills/ast-grep-code-analysis into .gemini/skills/ast-grep-code-analysis/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "ast-grep-code-analysis", 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 Sidiora-Labs/centra-llm-agents ast-grep-code-analysisInstalls 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 Sidiora-Labs/centra-llm-agents --skill ast-grep-code-analysis -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/Sidiora-Labs/centra-llm-agents.git skills-src && mkdir -p .github/skills && cp -r skills-src/protocol/skills/ast-grep-code-analysis .github/skills/ast-grep-code-analysis && 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-code-analysis" agent skill from https://github.com/Sidiora-Labs/centra-llm-agents/tree/main/protocol/skills/ast-grep-code-analysis into .github/skills/ast-grep-code-analysis/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "ast-grep-code-analysis", 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 Sidiora-Labs/centra-llm-agents --skill ast-grep-code-analysis -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install Sidiora-Labs/centra-llm-agents ast-grep-code-analysis --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Sidiora-Labs/centra-llm-agents.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/protocol/skills/ast-grep-code-analysis .opencode/skills/ast-grep-code-analysis && 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-code-analysis" agent skill from https://github.com/Sidiora-Labs/centra-llm-agents/tree/main/protocol/skills/ast-grep-code-analysis into .opencode/skills/ast-grep-code-analysis/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "ast-grep-code-analysis", 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-code-analysis- GitHub stars
- 115
- Token cost
- ~1.9k tokens
- SKILL.md length
- 418 words
- Files
- 2
- Skills in repo
- 30
- Repo updated
- First seen
- Licence
- Custom licence
At a glance
A skill your agent uses when analyzing complex codebases for security vulnerabilities, performance issues, and structural patterns - provides systematic AST-based approach using ast-grep for…
- Works in 5 steps: Setup: Create rule sets for security,… → Baseline: Run analysis on existing… → Iterate: Refine rules based on false… → …
- Analyzing complex codebases for security vulnerabilities
- SKILL.md covers Overview, When to Use, Core Pattern and Quick Reference, plus 4 more sections
- Calls npm and mise
What it does
Ast Grep Code Analysis is an agent skill from Sidiora-Labs/centra-llm-agents. Use when analyzing complex codebases for security vulnerabilities, performance issues, and structural patterns - provides systematic AST-based approach using ast-grep for comprehensive code understanding beyond manual inspection
Its SKILL.md is about 1.9k tokens, which your agent loads only when the skill is triggered. The skill folder holds 1 other file.
The repository describes itself as: A stateful AI operating system for serious, long-horizon work.
When your agent uses it
- Analyzing complex codebases for security vulnerabilities
- Performance issues
- Structural patterns - provides systematic AST-based approach using ast-grep for comprehensive code understanding beyond manual inspection
Example prompts
- “/ast-grep-code-analysis”
Requirements
- Node.js
Workflow steps
5 steps, taken from the first numbered list in SKILL.md.
- Setup: Create rule sets for security, performance, structure
- Baseline: Run analysis on existing codebase to establish patterns
- Iterate: Refine rules based on false positives/negatives
- Automate: Integrate into CI/CD pipeline for continuous analysis
- Monitor: Track issue reduction over time
What it can do on your machine
Read from SKILL.md and the folder at commit 01c6aef. 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
Shell commands in SKILL.md call:
npmmise
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md. Its commands use npm, which can reach the network depending on how they are called.
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 Code Analysis loads about 1.9k tokens when it runs. Until then it costs about 63 tokens; SKILL.md has 418 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 418 words (~1,948 tokens).
“AST-Grep Code Analysis uses Abstract Syntax Tree pattern matching to systematically identify code issues, replacing manual line-by-line inspection with structural pattern recognition.”
- name
- ast-grep-code-analysis
Files
SKILL.md and 1 other file in protocol/skills/ast-grep-code-analysis of Sidiora-Labs/centra-llm-agents.
- SKILL.md
- SKILL.mtx
Open the folder on GitHubat commit 01c6aef
Compare with similar skills
Ast Grep Code Analysis 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 Code Analysis this skillSidiora-Labs/centra-llm-agents | 115 | — | ~1.9k | Automated safety check: Pass | Custom licence | |
| Ast Grepccusage/ccusage | 19k | — | ~296 | Automated safety check: Pass | Custom licence | |
| ast-grep Structural Searchcode-yeongyu/oh-my-openagent | 70k | — | ~3.3k | Automated safety check: Pass | MIT | |
| Analyzing Sbom For Supply Chain Vulnerabilitiesmukul975/Anthropic-Cybersecurity-Skills | 34k | — | ~2.9k | Automated safety check: Pass | Apache-2.0 | |
| Ast Grep Findparcadei/Continuous-Claude-v3 | 3.9k | 1 repos | ~677 | Automated safety check: Notes | MIT | |
| Codebase Onboardingaffaan-m/ECC | 274k | 3 repos | ~2k | Automated safety check: Pass | MIT |
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Analyzing Sbom For Supply Chain Vulnerabilities
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AST-based code search and refactoring via ast-grep MCP. An agent skill from parcadei/Continuous-Claude-v3.
Codebase Onboarding
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Questions about Ast Grep Code Analysis
What does Ast Grep Code Analysis do?
A skill your agent uses when analyzing complex codebases for security vulnerabilities, performance issues, and structural patterns - provides systematic AST-based approach using ast-grep for…. Ast Grep Code Analysis is an agent skill from Sidiora-Labs/centra-llm-agents.
When should I use Ast Grep Code Analysis?
Ast Grep Code Analysis fits situations like: analyzing complex codebases for security vulnerabilities; performance issues; structural patterns - provides systematic AST-based approach using ast-grep for comprehensive code understanding beyond manual inspection.
How do I install Ast Grep Code Analysis in Claude Code?
Run `npx skills add Sidiora-Labs/centra-llm-agents --skill ast-grep-code-analysis -a claude-code`. Or copy the skill folder (protocol/skills/ast-grep-code-analysis in Sidiora-Labs/centra-llm-agents) into .claude/skills/ast-grep-code-analysis in your project. Claude Code loads it when a task matches its description.
How do I install Ast Grep Code Analysis in Codex?
Run `npx skills add Sidiora-Labs/centra-llm-agents --skill ast-grep-code-analysis -a codex`. Or copy the skill folder (protocol/skills/ast-grep-code-analysis in Sidiora-Labs/centra-llm-agents) into .agents/skills/ast-grep-code-analysis in your project. Codex loads it when a task matches its description.
Can I use Ast Grep Code Analysis 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 Sidiora-Labs/centra-llm-agents --skill ast-grep-code-analysis -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-code-analysis, .gemini/skills/ast-grep-code-analysis, .github/skills/ast-grep-code-analysis and .opencode/skills/ast-grep-code-analysis in your project.
What does Ast Grep Code Analysis need to run?
Going by SKILL.md and its folder, Ast Grep Code Analysis needs the command-line tools its instructions call (npm and mise). Our summary lists: Node.js.
Does Ast Grep Code Analysis access the network?
SKILL.md contains no URLs. Its commands use npm, which can reach the network depending on how they are called. This is read from the text; nothing was executed.
Is Ast Grep Code Analysis 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 Code Analysis use?
Ast Grep Code Analysis 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 Code Analysis use?
About 1.9k tokens (SKILL.md is roughly 7.8k 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 Code Analysis?
Skills that share tags, products or a category with Ast Grep Code Analysis: Ast Grep (ccusage/ccusage, 19k stars), ast-grep Structural Search (code-yeongyu/oh-my-openagent, 70k stars), Analyzing Sbom For Supply Chain Vulnerabilities (mukul975/Anthropic-Cybersecurity-Skills, 34k stars) and Ast Grep Find (parcadei/Continuous-Claude-v3, 3.9k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Ast Grep Code Analysis?
Sidiora-Labs (a GitHub organization) maintains it in Sidiora-Labs/centra-llm-agents, which has 115 GitHub stars. The repository holds 30 skills in this directory. The repository was last updated on September 18, 2026.
Source: Sidiora-Labs/centra-llm-agents on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.