Can I use specific versions of GPT-5?

Yes, the skill allows you to specify models such as gpt-5, gpt-5.1, or gpt-5.1-codex using the -m or --model flags.

What is the primary benefit of the Codex skill?

It enables 'codex exec' mode, which allows Claude to perform complex tasks autonomously using the Codex CLI and GPT-5 models without needing approval for every individual action.

How do I enable file editing with this skill?

You should use the Workspace-Write mode by adding the --full-auto or -s workspace-write flags to the codex command. This is the recommended mode for most programming tasks.

What are the sandbox modes available?

There are three modes: Read-Only (default) for analysis, Workspace-Write for editing files within your project, and Danger-Full-Access for system-level operations and network access.

Codex Automation Skill

Name: Codex Automation Skill
Author: Activer007

byActiver007

0•

Productivity & Workflow

Enables non-interactive, hands-off automation for executing complex development tasks using Codex and GPT-5 models.

The codex-skill integrates the Codex CLI into Claude's environment, allowing for fully autonomous execution of technical plans and feature implementations. It enables Claude to leverage advanced models like GPT-5 and GPT-5.1 to perform codebase-wide refactoring, bug fixes, and feature development without requiring constant user approval. With granular sandbox modes—ranging from secure read-only analysis to full system access—it provides a flexible framework for streamlining end-to-end development workflows and increasing developer velocity.

Key Features

010 GitHub stars

02Support for advanced models including GPT-5, GPT-5.1, and GPT-5.1-codex

03Structured JSON output for integration with other tools and automated reporting

04Configurable sandbox policies (Read-Only, Workspace-Write, and Danger-Full-Access)

05Autonomous execution mode for hands-off task completion without approval prompts

06Comprehensive CLI support for model selection, profiles, and custom directories

Use Cases

01Performing codebase-wide migrations or refactors autonomously

02Executing an entire feature implementation plan designed by Claude in one pass

03Running automated security audits and performance benchmarks with detailed summaries

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add activer007/ordinary-claude-skills codex-skill

For use in Claude.ai and ChatGPT

Download Skill