Analyzing Active Directory Acl Abuse
mukul975/Anthropic-Cybersecurity-Skills
Detect dangerous ACL misconfigurations in Active Directory using ldap3 to identify GenericAll, WriteDACL, and WriteOwner abuse paths
Expert C4 Code-level documentation specialist. An agent skill from aiskillstore/marketplace.
No licenceAuto-check passed
Install C4 Code
$ npx skills add aiskillstore/marketplace --skill c4-code -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install aiskillstore/marketplace c4-code --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/aiskillstore/marketplace.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/sickn33/c4-code .claude/skills/c4-code && 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 "c4-code" agent skill from https://github.com/aiskillstore/marketplace/tree/main/skills/sickn33/c4-code into .claude/skills/c4-code/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "c4-code", 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/aiskillstore/marketplace/tree/main/skills/sickn33/c4-codeType 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 aiskillstore/marketplace --skill c4-code -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install aiskillstore/marketplace c4-code --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/aiskillstore/marketplace.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/sickn33/c4-code .agents/skills/c4-code && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "c4-code" agent skill from https://github.com/aiskillstore/marketplace/tree/main/skills/sickn33/c4-code into .agents/skills/c4-code/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "c4-code", 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 aiskillstore/marketplace --skill c4-code -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install aiskillstore/marketplace c4-code --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/aiskillstore/marketplace.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/sickn33/c4-code .cursor/skills/c4-code && 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 "c4-code" agent skill from https://github.com/aiskillstore/marketplace/tree/main/skills/sickn33/c4-code into .cursor/skills/c4-code/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "c4-code", 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/aiskillstore/marketplace.git --path skills/sickn33/c4-code--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 aiskillstore/marketplace --skill c4-code -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install aiskillstore/marketplace c4-code --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/aiskillstore/marketplace.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/sickn33/c4-code .gemini/skills/c4-code && 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 "c4-code" agent skill from https://github.com/aiskillstore/marketplace/tree/main/skills/sickn33/c4-code into .gemini/skills/c4-code/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "c4-code", 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 aiskillstore/marketplace c4-codeInstalls 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 aiskillstore/marketplace --skill c4-code -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/aiskillstore/marketplace.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/sickn33/c4-code .github/skills/c4-code && 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 "c4-code" agent skill from https://github.com/aiskillstore/marketplace/tree/main/skills/sickn33/c4-code into .github/skills/c4-code/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "c4-code", 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 aiskillstore/marketplace --skill c4-code -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install aiskillstore/marketplace c4-code --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/aiskillstore/marketplace.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/sickn33/c4-code .opencode/skills/c4-code && 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 "c4-code" agent skill from https://github.com/aiskillstore/marketplace/tree/main/skills/sickn33/c4-code into .opencode/skills/c4-code/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "c4-code", 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
c4-code- GitHub stars
- 430
- Used in
- 6 other repos
- Token cost
- ~2k tokens
- SKILL.md length
- 214 words
- Files
- 2
- Skills in repo
- 1,085
- Repo updated
- First seen
- Licence
- None found
At a glance
Expert C4 Code-level documentation specialist. An agent skill from aiskillstore/marketplace.
- Documenting code at the lowest C4 level for individual directories and code modules
- SKILL.md covers Use this skill when, Do not use this skill when, Instructions and Overview, plus 3 more sections
- Reaches c4model.com
What it does
C4 Code is an agent skill from aiskillstore/marketplace. Expert C4 Code-level documentation specialist. Analyzes code directories to create comprehensive C4 code-level documentation including function signatures, arguments, dependencies, and code structure. Use when documenting code at the lowest C4 level for individual directories and code modules.
Its SKILL.md is about 2k tokens, which your agent loads only when the skill is triggered. The skill folder holds 1 other file (for example `skill-report.json`).
The repository describes itself as: Security-audited skills for Claude, Codex & Claude Code. One-click install, quality verified.
When your agent uses it
- Documenting code at the lowest C4 level for individual directories and code modules
Example prompts
- “/c4-code”
What it can do on your machine
Read from SKILL.md and the folder at commit 4ac52da. 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 (its code samples are mermaid).
From the folder's file list and the shell code blocks in SKILL.md.
Network
Hosts in commands or code, which the agent is likely to contact:
c4model.com
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
C4 Code loads about 2k tokens when it runs. Until then it costs about 76 tokens; SKILL.md has 214 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
Without a licence we can't republish the file, so here is its outline and opening line. It has 214 words (~1,964 tokens).
“Optional Mermaid diagrams for complex code structures. Choose the diagram type based on the programming paradigm. Code diagrams show the internal structure of a single component.”
- name
- c4-code
- metadata.model
- haiku
Files
SKILL.md and 1 other file in skills/sickn33/c4-code of aiskillstore/marketplace.
- SKILL.md
- skill-report.json
Open the folder on GitHubat commit 4ac52da
Used in 6 other repositories
We found 15 copies of this SKILL.md (exact, near-identical or edited) in other folders, from 6 other GitHub owners. This page covers the copy in aiskillstore/marketplace, which our catalogue first saw on October 7, 2026.
- sickn33/agentic-awesome-skillsskills/c4-codeplugins/agentic-awesome-skills/skills/c4-code+1 more
- rmyndharis/antigravity-skillsskills/c4-code
- agent-skills-hub/agent-skills-hubskills/c4-code
- lingxling/awesome-skills-cnantigravity-awesome-skills/skills/c4-codeantigravity-awesome-skills/plugins/agentic-awesome-skills/skills/c4-code+1 more
- benjaminasterA/antigravity-awesome-skillsskills/c4-code
- henryalouf/ruflow.agents/skills/c4-code.agents/skills/antigravity-awesome-skills/skills/c4-code+4 more
Compare with similar skills
C4 Code 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 |
|---|---|---|---|---|---|---|
| C4 Code this skillaiskillstore/marketplace | 430 | 6 repos | ~2k | Automated safety check: Pass | None | |
| Analyzing Active Directory Acl Abusemukul975/Anthropic-Cybersecurity-Skills | 34k | — | ~1.1k | Automated safety check: Pass | Apache-2.0 | |
| Agent Code Analyzerruvnet/ruflo | 74k | 3 repos | ~1.5k | Automated safety check: Pass | MIT | |
| Agent Pagerank Analyzerruvnet/ruflo | 74k | 3 repos | ~2.9k | Automated safety check: Pass | MIT | |
| Agent Worker Specialistruvnet/ruflo | 74k | 3 repos | ~1.4k | Automated safety check: Pass | MIT | |
| Agent Performance Analyzerruvnet/ruflo | 74k | 2 repos | ~1.3k | Automated safety check: Pass | MIT |
Similar skills
Agent Code Analyzer
ruvnet/ruflo
Agent skill for code-analyzer - invoke with $agent-code-analyzer
Agent Pagerank Analyzer
ruvnet/ruflo
Agent skill for pagerank-analyzer - invoke with $agent-pagerank-analyzer
Agent Worker Specialist
ruvnet/ruflo
Agent skill for worker-specialist - invoke with $agent-worker-specialist
Agent Performance Analyzer
ruvnet/ruflo
Agent skill for performance-analyzer - invoke with $agent-performance-analyzer
Diff Analyze
ruvnet/ruflo
Analyze git diffs for risk scoring, reviewer recommendations, and change classification.
More from aiskillstore/marketplace
All 1,085 skills in this repoCode Stats
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Analyze codebase with tokei (fast line counts by language) and difft (semantic AST-aware diffs).
Data Processing
aiskillstore/marketplace
Process JSON with jq and YAML/TOML with yq. An agent skill from aiskillstore/marketplace.
Doc Scanner
aiskillstore/marketplace
Scans for project documentation files (AGENTS.md, CLAUDE.md, GEMINI.md, COPILOT.md, CURSOR.md, WARP.md, and 15+ other formats) and synthesizes guidance.
File Search
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Modern file and content search using fd, ripgrep (rg), and fzf.
Find Replace
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Modern find-and-replace using sd (simpler than sed) and batch replacement patterns.
Investigating Codebases
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Automatically activated when user asks how something works, wants to understand unfamiliar code, needs to explore a new codebase, or asks questions like "where is X implemented?", "how does Y…
Questions about C4 Code
What does C4 Code do?
Expert C4 Code-level documentation specialist. An agent skill from aiskillstore/marketplace. C4 Code is an agent skill from aiskillstore/marketplace. Expert C4 Code-level documentation specialist.
When should I use C4 Code?
C4 Code fits situations like: documenting code at the lowest C4 level for individual directories and code modules.
How do I install C4 Code in Claude Code?
Run `npx skills add aiskillstore/marketplace --skill c4-code -a claude-code`. Or copy the skill folder (skills/sickn33/c4-code in aiskillstore/marketplace) into .claude/skills/c4-code in your project. Claude Code loads it when a task matches its description.
How do I install C4 Code in Codex?
Run `npx skills add aiskillstore/marketplace --skill c4-code -a codex`. Or copy the skill folder (skills/sickn33/c4-code in aiskillstore/marketplace) into .agents/skills/c4-code in your project. Codex loads it when a task matches its description.
Can I use C4 Code 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 aiskillstore/marketplace --skill c4-code -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/c4-code, .gemini/skills/c4-code, .github/skills/c4-code and .opencode/skills/c4-code in your project.
What does C4 Code need to run?
SKILL.md names no scripts, command-line tools or credentials: C4 Code is instructions for the agent only.
Does C4 Code access the network?
SKILL.md names 1 domain. In commands or code: c4model.com; the agent is likely to contact it when it follows the instructions. This is read from the text; nothing was executed.
Is C4 Code 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 C4 Code use?
No licence was found for C4 Code or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.
How many tokens does C4 Code use?
About 2k tokens (SKILL.md is roughly 7.9k 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 C4 Code?
Skills that share tags, products or a category with C4 Code: Analyzing Active Directory Acl Abuse (mukul975/Anthropic-Cybersecurity-Skills, 34k stars), Agent Code Analyzer (ruvnet/ruflo, 74k stars), Agent Pagerank Analyzer (ruvnet/ruflo, 74k stars) and Agent Worker Specialist (ruvnet/ruflo, 74k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains C4 Code?
aiskillstore (a GitHub organization) maintains it in aiskillstore/marketplace, which has 430 GitHub stars. The repository holds 1,085 skills in this directory. The repository was last updated on October 7, 2026.
Source: aiskillstore/marketplace on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.