codex

name	codex
description	Use when the user asks to run Codex CLI (codex exec, codex resume) or references OpenAI Codex for code analysis, refactoring, or automated editing. "codex", "코덱스", "codex 실행", "codex exec", "코드 검증", "AI 리뷰" 키워드에 반응.

Codex CLI Skill

Codex CLI를 통한 코드 분석, 리팩토링, 자동 편집 실행.

Available Models

Model	Description	Use Case
gpt-5.2-codex	최신 에이전틱 코딩 모델 (기본값)	일반 코딩, 리팩토링, 분석
gpt-5.1-codex-mini	경량 비용 효율 모델	빠른 리뷰, 간단한 작업
gpt-5.1-codex-max	확장 에이전틱 코딩 모델	대규모 리팩토링, 장시간 작업

Running a Task

Step	Action
1	ask the user: model (gpt-5.2-codex (Recommended), gpt-5.1-codex-mini, gpt-5.1-codex-max)
2	ask the user: reasoning effort (low, medium, high)
3	Select sandbox mode (default: read-only)
4	Assemble and run command
5	Capture output, summarize for user

Command Flags

Flag	Purpose
-m, --model <MODEL>	Model selection
--config model_reasoning_effort="<level>"	Reasoning effort
--sandbox <mode>	Sandbox mode
--full-auto	Full automation
-C, --cd <DIR>	Working directory
--skip-git-repo-check	Skip git check

Sandbox Modes

Use Case	Mode	Flags
Read-only review	read-only	--sandbox read-only
Apply local edits	workspace-write	--sandbox workspace-write --full-auto
Network/broad access	danger-full-access	--sandbox danger-full-access --full-auto
Resume session	Inherited	echo "prompt" | codex exec resume --last

Resume: Cannot specify flags — inherits all from original session.

Follow-Up

• After every codex command → ask the user for next steps
• Resume: echo "new prompt" | codex exec resume --last
• Restate model/effort/sandbox when proposing follow-up

Error Handling

Situation	Action
Non-zero exit	Stop, report, ask direction
High-impact flags	ask the user for permission first
Warnings/partial results	Summarize, ask how to adjust