codex

Review code diffs with Codex CLI in review, challenge, or consult modes.

Updated Mar 26, 2026
One-click install
npx skills add https://github.com/tropeks/Vitali --skill codex-tropeks
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: codex
Source: https://github.com/tropeks/Vitali/tree/main/.claude/skills/gstack-codex
Command: npx skills add https://github.com/tropeks/Vitali --skill codex-tropeks

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Provide independent, brutal evaluation of code changes using Codex to catch issues missed by standard reviews.

Core Features & Use Cases

  • Review mode: run Codex code review against a branch's diff to gate quality.
  • Challenge mode: adversarial prompts to probe edge cases and failure modes.
  • Consult mode: ask Codex for quick, factual guidance on a code snippet or approach.

Quick Start

Install the Codex CLI if needed and run the skill with /codex to begin a review, challenge, or consult.

Frequently Asked Questions about codex

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

FAQPage Schema
How do I get an independent second opinion on my code changes?

To get an independent code review, you can use Codex to run adversarial testing against your branch's diff, challenging edge cases and failure modes that standard reviews miss.

What is adversarial code review and how does it catch missed issues?

Adversarial code review uses targeted prompts to probe edge cases and failure modes in a diff, providing a brutally honest evaluation that catches structural problems standard reviews overlook.

Do I need the Codex CLI installed to review code diffs?

Yes, you need the Codex CLI installed and repository environment access to execute review, challenge, or consult modes against your project files and diffs.

Can I use AI to probe edge cases in my software engineering project?

Yes, you can use the challenge mode to run adversarial AI prompts against your code changes, probing for edge cases and failure modes across diffs and plan files.

What is the best way to challenge failure modes in a git diff?

The best way to challenge failure modes is using an independent AI assistant to apply adversarial testing against your branch's diff, ensuring project-scoped feedback gates quality.

How do I get quick factual guidance on a code snippet or approach?

You can use the consult mode to ask Codex for quick, factual guidance on a specific code snippet or engineering approach directly within your repository environment.