Do I need a separate OpenAI account?

Yes, you need either a ChatGPT Plus/Pro subscription for OAuth login or a valid OpenAI API key to authenticate the Codex CLI.

What models does the Codex CLI skill support?

It supports the latest frontier models including GPT-5.2, GPT-5.1-Codex-Max, o3 reasoning models, and efficient models like o4-mini.

Can I use images for code generation with this skill?

Yes, it supports multimodal tasks, allowing you to attach design screenshots or mockups which the AI can then implement into code.

How does this skill handle Git workflows?

It is natively Git-aware, respecting .gitignore files and allowing you to apply changes as patches or work directly within specific feature branches.

Is the full automation mode safe for my codebase?

While the bypass mode offers maximum power for CI/CD, the skill includes various sandboxing options (read-only, workspace-write) to ensure modifications are controlled.

OpenAI Codex CLI Integration

Name: OpenAI Codex CLI Integration
Author: adaptationio

byadaptationio

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Developer Tools

Integrates OpenAI Codex CLI into Claude Code to enable automated code generation, refactoring, and seamless collaboration with frontier models.

This skill bridges Claude Code with OpenAI's Codex CLI, allowing developers to leverage the latest OpenAI models—including GPT-5.2, GPT-5.1-Codex-Max, and the o-series—directly within their Claude-driven workflows. It provides advanced capabilities such as full automation with permission bypass for CI/CD pipelines, sandboxed execution for safe code modifications, and multimodal support for design-to-code tasks. By combining Claude's orchestration with Codex's specialized coding execution, users can automate complex tasks like whole-module refactoring, test suite generation, and git-aware development with minimal friction.

Key Features

01Sandboxed execution environments (read-only to full-access) for safety

02Full automation mode with bypassable approvals for rapid development

03Integrated web search for research-driven code generation and planning

04Direct access to GPT-5.2, o3, and GPT-5.1-Codex models within Claude

05Multimodal support for converting design images into functional code

060 GitHub stars

Use Cases

01Rapidly converting UI design mockups into production-ready frontend components

02Generating comprehensive unit and E2E test suites with 100% coverage goals

03Automated module refactoring with Git-aware safety and auto-fix capabilities

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add adaptationio/skrillz codex-cli

For use in Claude.ai and ChatGPT

Download Skill