codex

Runs OpenAI Codex CLI non-interactively to obtain second-opinion code reviews and design feedback.

3|Updated Jan 10, 2026
One-click install
npx skills add https://github.com/MaxWolf-01/agents --skill codex-maxwolf-01
Or copy as Structured Prompt for Agentâ–Ľ
Please help me install this Agent Skill.
Skill: codex
Source: https://github.com/MaxWolf-01/agents/tree/main/mx/skills/codex
Command: npx skills add https://github.com/MaxWolf-01/agents --skill codex-maxwolf-01

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve? When you are stuck on a hard bug, evaluating design trade-offs, or want a critique from a different model family, a single-model perspective can miss blind spots. This Skill lets Claude Code delegate a question to OpenAI's Codex CLI and read back a structured second opinion. ## Core Features & Use Cases - Non-interactive Codex execution: Runs codex exec in read-only sandbox mode with full disk read access, so Codex can inspect the codebase without modifying anything. - Background job management: Launches Codex as a named background job with a deadline, then reads the final answer from an output file. - Prompting guidance: Provides concrete instructions for orienting a zero-context model—pointing it at CLAUDE.md, decisions records, and ticket files, and requesting structured output. - Use Case: While debugging a flaky test, ask Codex to review the relevant files and list the top five likely causes with fixes, then compare its answer against your own analysis. ## Quick Start Ask the agent to get a second opinion from Codex on the current design or bug, and it will run Codex in the background and report back the findings.

Frequently Asked Questions about codex

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

FAQPage Schema
How do I get a second opinion from another AI model on my code?â–Ľ

Run OpenAI's Codex CLI non-interactively with codex exec in read-only sandbox mode, passing a prompt that names the files to review and the question to answer. The final response is written to an output file you read after the job completes.

How to run Codex CLI non-interactively in the background?â–Ľ

Launch it as a named background job with a deadline, for example job run codex-<slug> with codex exec and an output file flag, then wait on the job and read the result file. The deadline prevents a wedged run from blocking the session.

Can Codex review my code without modifying files?â–Ľ

Yes. Use the read-only sandbox flag together with disk-full-read-access permission so Codex can read any file on disk but cannot write. This guarantees no conflicts with your working tree during review.

Why does Codex give vague answers to my review request?â–Ľ

Codex starts with zero session context, so vague prompts produce vague answers. Point it to project documentation, name the exact files to review, state your constraints, and request structured output such as a numbered list of issues with fixes.

When should I increase Codex reasoning effort?â–Ľ

Raise the model reasoning effort setting only for especially reasoning-intensive tasks such as a subtle bug or a difficult design question. For routine reviews, the default configuration is sufficient and avoids unnecessary latency.