codex

Wraps OpenAI Codex CLI for independent code review, adversarial challenge, and consult sessions.

Updated May 22, 2026
One-click install
npx skills add https://github.com/kitfunso/claude-config --skill codex-kitfunso
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: codex
Source: https://github.com/kitfunso/claude-config/tree/main/skills/codex
Command: npx skills add https://github.com/kitfunso/claude-config --skill codex-kitfunso

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve? Getting a second opinion on code changes usually means waiting for a human reviewer or shipping unreviewed diffs. This Skill routes your code through the OpenAI Codex CLI so an outside model reviews, challenges, or answers questions about your work before you commit. ## Core Features & Use Cases - Independent Diff Review: Runs codex review against your changes with a pass/fail gate, catching issues your primary model may have missed. - Adversarial Challenge Mode: Tries to break your code by attacking assumptions, edge cases, and failure paths. - Consult with Session Continuity: Ask Codex anything and keep follow-up context across questions in the same session. - Use Case: Before merging a branch, invoke a codex review to get a "200 IQ autistic developer" second opinion on the diff, then run challenge mode to stress-test the riskiest logic. ## Quick Start Ask the assistant to run a codex review of the current branch diff and report any blocking issues before shipping.

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 on a code diff with Codex CLI?▼

Invoke the codex review mode, which runs the OpenAI Codex CLI against your current diff and returns a pass/fail gate with findings. It works on the current git branch and reports blocking issues before you ship.

What is adversarial code challenge mode?▼

Challenge mode instructs Codex to actively try to break your code by attacking assumptions, edge cases, and failure paths rather than approving it. Use it when you want stress-testing instead of a standard review.

Does codex consult keep context across follow-up questions?▼

Yes, consult mode maintains session continuity so follow-up questions build on earlier answers within the same session. This lets you iterate on a design or debugging thread without restating context.

Can I use codex review in a headless or CI session?▼

Yes, the preamble detects headless sessions via gstack-session-kind and skips interactive prompts. In headless mode, unavailable AskUserQuestion calls result in a BLOCKED state rather than silent auto-decisions.

What are the limitations of using Codex CLI for code review?▼

The review quality depends on the Codex CLI being installed and authenticated, and it reviews the diff it is given rather than running your test suite. Treat the pass/fail gate as a second opinion, not a replacement for CI.