Codex Review

What it does

When your agent uses it

• Tasks that involve Code review

Example prompts

• “codex review”
• “review with codex”
• “independent code review”
• “/codex-review”

Requirements

• Compatibility (from SKILL.md): Designed for Claude Code (or similar products)

Workflow steps

2 steps, taken from the first numbered list in SKILL.md.

1. 1Confirm Codex CLI is installed
2. 2Confirm auth: the first codex review call will fail clearly if not logged in. If that happens, instruct the user to run codex login and…

What it can do on your machine

Read from SKILL.md and the folder at commit 64965d9. It shows what the files ask for, not the result of running them.

• Tool permissions

  Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

  From allowed-tools in the SKILL.md frontmatter.

• Runs code

  Shell commands in SKILL.md call:

  • codex
  • brew

  From the folder's file list and the shell code blocks in SKILL.md.

• Network

  Links to these hosts (documentation or services it may open):

  • github.com

  From URLs in SKILL.md, links to its own repository left out.

• Credentials

  Names no API keys, tokens, secrets or passwords.

  From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

• Compatibility

  Designed for Claude Code (or similar products)

  From compatibility in the SKILL.md frontmatter.

Context cost

Codex Review loads about 1.2k tokens when it runs. Until then it costs about 126 tokens; SKILL.md has 540 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it

~126

When it runs · the whole SKILL.md, loaded when a task matches

~1.2k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from jezweb/claude-skills at commit 64965d9, republished under its MIT licence (© jezweb). 540 words, ~1,211 tokens.

name

codex-review

description

Run an independent code review using the OpenAI Codex CLI in headless mode. Gets a second opinion from a different model family (the current Codex models) on recent changes, a PR, a commit, or the whole app — covering bugs, regressions, security, data consistency, UX/state bugs, performance risks, and testing gaps. Saves a severity-prioritised report to .jez/reviews/. Triggers: 'codex review', 'review with codex', 'independent code review', 'what does codex think', 'get codex to review'.

compatibility

Designed for Claude Code (or similar products)

mkdir -p .jez/reviews
TS=$(date +%Y-%m-%d-%H%M)
OUT=".jez/reviews/codex-${TS}.md"
SKILL_DIR="$(dirname "$0")"  # or use the skill's absolute path

# Example: uncommitted changes
cat "${SKILL_DIR}/prompt.md" | codex review --uncommitted - 2>&1 | tee "$OUT"

# Vs base branch
cat prompt.md | codex review --base main - 2>&1 | tee "$OUT"

# Specific commit
cat prompt.md | codex review --commit abc123 - 2>&1 | tee "$OUT"

# Current HEAD (no scope flag)
cat prompt.md | codex review - 2>&1 | tee "$OUT"

© jezweb, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

SKILL.md and 1 other file in plugins/dev-tools/skills/codex-review of jezweb/claude-skills.

• SKILL.md
• prompt.md

Open the folder on GitHubat commit 64965d9