Configuring Host Based Intrusion Detection
mukul975/Anthropic-Cybersecurity-Skills
Configures host-based intrusion detection systems (HIDS) to monitor endpoint file integrity, system calls, and configuration changes for security violations.
Run OpenAI Codex CLI as a background agent — detect, install, configure, and execute tasks via codex exec.
MITAuto-check passed
Install Codex CLI
$ npx skills add CoWork-OS/CoWork-OS --skill codex-cli -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install CoWork-OS/CoWork-OS codex-cli --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/CoWork-OS/CoWork-OS.git skills-src && mkdir -p .claude/skills && cp -r skills-src/resources/skills/codex-cli .claude/skills/codex-cli && 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 "codex-cli" agent skill from https://github.com/CoWork-OS/CoWork-OS/tree/main/resources/skills/codex-cli into .claude/skills/codex-cli/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "codex-cli", 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/CoWork-OS/CoWork-OS/tree/main/resources/skills/codex-cliType 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 CoWork-OS/CoWork-OS --skill codex-cli -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install CoWork-OS/CoWork-OS codex-cli --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/CoWork-OS/CoWork-OS.git skills-src && mkdir -p .agents/skills && cp -r skills-src/resources/skills/codex-cli .agents/skills/codex-cli && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "codex-cli" agent skill from https://github.com/CoWork-OS/CoWork-OS/tree/main/resources/skills/codex-cli into .agents/skills/codex-cli/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "codex-cli", 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 CoWork-OS/CoWork-OS --skill codex-cli -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install CoWork-OS/CoWork-OS codex-cli --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/CoWork-OS/CoWork-OS.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/resources/skills/codex-cli .cursor/skills/codex-cli && 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 "codex-cli" agent skill from https://github.com/CoWork-OS/CoWork-OS/tree/main/resources/skills/codex-cli into .cursor/skills/codex-cli/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "codex-cli", 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/CoWork-OS/CoWork-OS.git --path resources/skills/codex-cli--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 CoWork-OS/CoWork-OS --skill codex-cli -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install CoWork-OS/CoWork-OS codex-cli --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/CoWork-OS/CoWork-OS.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/resources/skills/codex-cli .gemini/skills/codex-cli && 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 "codex-cli" agent skill from https://github.com/CoWork-OS/CoWork-OS/tree/main/resources/skills/codex-cli into .gemini/skills/codex-cli/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "codex-cli", 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 CoWork-OS/CoWork-OS codex-cliInstalls 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 CoWork-OS/CoWork-OS --skill codex-cli -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/CoWork-OS/CoWork-OS.git skills-src && mkdir -p .github/skills && cp -r skills-src/resources/skills/codex-cli .github/skills/codex-cli && 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 "codex-cli" agent skill from https://github.com/CoWork-OS/CoWork-OS/tree/main/resources/skills/codex-cli into .github/skills/codex-cli/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "codex-cli", 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 CoWork-OS/CoWork-OS --skill codex-cli -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install CoWork-OS/CoWork-OS codex-cli --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/CoWork-OS/CoWork-OS.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/resources/skills/codex-cli .opencode/skills/codex-cli && 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 "codex-cli" agent skill from https://github.com/CoWork-OS/CoWork-OS/tree/main/resources/skills/codex-cli into .opencode/skills/codex-cli/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "codex-cli", 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
codex-cli- GitHub stars
- 473
- Token cost
- ~352 tokens
- SKILL.md length
- 176 words
- Files
- 2 (incl. references)
- Skills in repo
- 81
- Repo updated
- First seen
- Licence
- MIT
At a glance
Run OpenAI Codex CLI as a background agent — detect, install, configure, and execute tasks via codex exec.
- SKILL.md covers Purpose, Routing, Trigger Examples and Runtime Prompt
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Codex CLI is an agent skill from CoWork-OS/CoWork-OS. Run OpenAI Codex CLI as a background agent — detect, install, configure, and execute tasks via codex exec.
Its SKILL.md is about 350 tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files, including reference files (for example `references/full-guidance.md`).
The repository describes itself as: Local-first personal agentic OS and everything app for coding, knowledge work, web design, automations, and artifacts. The licence is MIT.
Example prompts
- “/codex-cli”
What it can do on your machine
Read from SKILL.md and the folder at commit 0380874. 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
No URLs in SKILL.md.
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
Codex CLI loads about 352 tokens when it runs, and up to ~2.8k if it reads all its reference files. Until then it costs about 29 tokens; SKILL.md has 176 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
The full file from CoWork-OS/CoWork-OS at commit 0380874, republished under its MIT licence (© CoWork-OS). 176 words, ~352 tokens.
Download SKILL.mdSave it as
.claude/skills/codex-cli/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.- name
- codex-cli
- description
- Run OpenAI Codex CLI as a background agent — detect, install, configure, and execute tasks via codex exec.
- version
- 1.0.0
- metadata.author
- CoWork OS Contributors <info@coworkosapp.com>
codex-cli
Purpose
Detect, install, configure, and run the OpenAI Codex CLI (codex) as an autonomous background agent for code editing, PR review, issue fixing, and one-shot automation tasks.
Routing
- Use when: User wants to run Codex CLI, asks for "codex agent", "spin up codex", "codex review", "codex fix", or wants to execute a coding task using the OpenAI Codex CLI specifically.
- Do not use when: The request is for planning, discussion, or non-executable output.
- Outputs: Task result from Codex CLI agent, or setup instructions if CLI is not installed/configured.
- Success criteria: Codex CLI executes the requested task and returns output, or user is guided to install/configure it.
Trigger Examples
Positive
- "Spin up a Codex agent to review PR #55"
- "Use Codex CLI to fix this bug"
- "Run codex on this issue"
- "Launch a codex agent"
- "codex exec: add error handling to the API"
Negative
- "Review this code" (generic — doesn't specify Codex CLI)
- "Explain how Codex works" (no execution needed)
- "Write a plan for this feature" (planning only)
Runtime Prompt
- Runtime prompt is defined directly in
../codex-cli.json.
© CoWork-OS, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
SKILL.md and 1 other file (references) in resources/skills/codex-cli of CoWork-OS/CoWork-OS.
- SKILL.md
- references/full-guidance.md
Open the folder on GitHubat commit 0380874
Compare with similar skills
Codex CLI 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 |
|---|---|---|---|---|---|---|
| Codex CLI this skillCoWork-OS/CoWork-OS | 473 | — | ~352 | Automated safety check: Pass | MIT | |
| Configuring Host Based Intrusion Detectionmukul975/Anthropic-Cybersecurity-Skills | 34k | — | ~2.1k | Automated safety check: Pass | Apache-2.0 | |
| Configuring Windows Event Logging For Detectionmukul975/Anthropic-Cybersecurity-Skills | 34k | — | ~1.6k | Automated safety check: Pass | Apache-2.0 | |
| Configuring Snort Ids For Intrusion Detectionmukul975/Anthropic-Cybersecurity-Skills | 34k | — | ~3.5k | Automated safety check: Notes | Apache-2.0 | |
| Pii Detectruvnet/ruflo | 74k | 1 repos | ~350 | Automated safety check: Notes | MIT | |
| Threat Detectionalirezarezvani/claude-skills | 28k | — | ~3.5k | Automated safety check: Pass | MIT |
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Questions about Codex CLI
What does Codex CLI do?
Run OpenAI Codex CLI as a background agent — detect, install, configure, and execute tasks via codex exec. Codex CLI is an agent skill from CoWork-OS/CoWork-OS. Run OpenAI Codex CLI as a background agent — detect, install, configure, and execute tasks via codex exec.
How do I install Codex CLI in Claude Code?
Run `npx skills add CoWork-OS/CoWork-OS --skill codex-cli -a claude-code`. Or copy the skill folder (resources/skills/codex-cli in CoWork-OS/CoWork-OS) into .claude/skills/codex-cli in your project. Claude Code loads it when a task matches its description.
How do I install Codex CLI in Codex?
Run `npx skills add CoWork-OS/CoWork-OS --skill codex-cli -a codex`. Or copy the skill folder (resources/skills/codex-cli in CoWork-OS/CoWork-OS) into .agents/skills/codex-cli in your project. Codex loads it when a task matches its description.
Can I use Codex CLI 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 CoWork-OS/CoWork-OS --skill codex-cli -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/codex-cli, .gemini/skills/codex-cli, .github/skills/codex-cli and .opencode/skills/codex-cli in your project.
What does Codex CLI need to run?
SKILL.md names no scripts, command-line tools or credentials: Codex CLI is instructions for the agent only.
Does Codex CLI access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is Codex CLI 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 Codex CLI use?
Codex CLI is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Codex CLI use?
About 352 tokens (SKILL.md is roughly 1.4k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 2.5k tokens, read only when the agent opens those files.
What are the alternatives to Codex CLI?
Skills that share tags, products or a category with Codex CLI: Configuring Host Based Intrusion Detection (mukul975/Anthropic-Cybersecurity-Skills, 34k stars), Configuring Windows Event Logging For Detection (mukul975/Anthropic-Cybersecurity-Skills, 34k stars), Configuring Snort Ids For Intrusion Detection (mukul975/Anthropic-Cybersecurity-Skills, 34k stars) and Pii Detect (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 Codex CLI?
CoWork-OS (a GitHub organization) maintains it in CoWork-OS/CoWork-OS, which has 473 GitHub stars. The repository holds 81 skills in this directory. The repository was last updated on October 7, 2026.
Source: CoWork-OS/CoWork-OS on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.