codex

name	codex
description	Run OpenAI Codex CLI as a subagent for second opinions, code reviews, and questions. Use when you want a different AI model's perspective.

Codex Subagent

Run OpenAI Codex CLI (GPT-5.2) for second opinions and external reviews.

Availability Check

Before using Codex, verify it's installed:

which codex >/dev/null 2>&1 || echo "CODEX_NOT_INSTALLED"

If not installed, inform the user: "Codex CLI is not installed. Skipping Codex review."

Execution Pattern

OUTPUT_FILE=$(mktemp)
codex exec \
  --skip-git-repo-check \
  --dangerously-bypass-approvals-and-sandbox \
  -o "$OUTPUT_FILE" \
  "$PROMPT" </dev/null 2>/tmp/codex_stderr.log
cat "$OUTPUT_FILE"
rm "$OUTPUT_FILE"

Flags

Flag	Purpose
exec	Non-interactive mode
--skip-git-repo-check	Run outside git repositories
--dangerously-bypass-approvals-and-sandbox	No prompts, no sandbox restrictions
-o <file>