codex

Delegate coding and code-review tasks to OpenAI Codex via terminal-driven git workflows.

Updated May 4, 2026

Search Tags:#code review #refactoring #pull requests #coding #git worktrees #codex cli #terminal automation

Ready to run

npx skills add https://github.com/JamesFincher/gengar --skill codex-jamesfincher

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: codex
Source: https://github.com/JamesFincher/gengar/tree/main/skills/autonomous-ai-agents/codex
Command: npx skills add https://github.com/JamesFincher/gengar --skill codex-jamesfincher

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

It reduces the time and coordination required to implement, refactor, and review code changes by delegating work to OpenAI Codex via a terminal workflow.

Core Features & Use Cases

Feature building and refactoring: Have Codex execute prompts to modify a codebase, including long-running automated sessions.
PR reviews: Run Codex against a pulled PR diff in a cloned temporary repo for safer review workflows.
Parallel issue fixing: Use git worktrees to run multiple Codex instances simultaneously for independent issue scopes.

Quick Start

Use the codex skill to build a new feature in your current git repository by asking it to run Codex on your prompt using an interactive terminal session.

Frequently Asked Questions about codex

High-intent search queries and answers about installing and using this skill.

FAQPage Schema

How do I automate code reviews for pull requests using Codex CLI?▼

Automate code reviews by running Codex against a pulled PR diff in a cloned temporary repository, enabling safer review workflows without modifying your primary git checkout.

Can I run multiple Codex instances in parallel to fix independent git issues?▼

Run multiple Codex instances simultaneously by utilizing git worktrees for independent issue scopes, allowing parallel terminal-driven execution for faster throughput.

How do I delegate refactoring tasks to OpenAI Codex from a terminal?▼

Delegate refactoring tasks by executing Codex prompts within your git repository using interactive PTY or background orchestration with full-auto mode for safe automated changes.

What do I need to set up before using Codex for feature development?▼

Setup requires the Codex CLI installed, a working git checkout, and interactive PTY or background orchestration configured for safe automated terminal-driven execution.

Does Codex CLI work with full-auto mode for safe automated code changes?▼

Codex CLI supports full-auto mode and exec orchestration to safely apply automated code changes during long-running feature building and refactoring sessions.

When should I use git worktrees for parallel issue fixing instead of a single checkout?▼

Use git worktrees for parallel issue fixing when managing independent issue scopes simultaneously, preventing branch conflicts and maximizing throughput across multiple Codex instances.