Skill Codex

Codex Skill for Claude Code

Teach Claude Code how to invoke OpenAI's Codex CLI for advanced code analysis, refactoring, and automated editing.

A [Claude Code skill](https://docs.claude.com/en/docs/agents-and-tools/agent-skills/overview) that enables Claude to leverage OpenAI Codex CLI's advanced reasoning models for code reviews, refactoring, security audits, architecture analysis, and automated transformations.

Overview

This filesystem-based skill automatically activates when you mention Codex-related tasks. Simply ask Claude to review or refactor your code, and it will:

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Prerequisites

Before installing this skill:

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If you don't have Codex installed, see the [Codex CLI documentation](https://developers.openai.com/codex/cli/reference).

Installation

Clone and copy the skill to your `.claude/skills` directory:

**Personal Installation (all projects):**

# Unix/Linux/macOS
git clone --depth 1 https://github.com/sypsyp97/claude-skill-codex.git /tmp/codex-skill && \
mkdir -p ~/.claude/skills && cp -r /tmp/codex-skill/.claude/skills/codex ~/.claude/skills/codex && \
rm -rf /tmp/codex-skill

# Windows (PowerShell)
git clone --depth 1 https://github.com/sypsyp97/claude-skill-codex.git $env:TEMP\codex-skill; `
New-Item -ItemType Directory -Force -Path "$env:USERPROFILE\.claude\skills"; `
Copy-Item -Recurse -Force "$env:TEMP\codex-skill\.claude\skills\codex" "$env:USERPROFILE\.claude\skills\codex"; `
Remove-Item -Recurse -Force "$env:TEMP\codex-skill"

**Project-Specific Installation:**

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