codex

Installation
SKILL.md

Run Codex CLI for $ARGUMENTS.

Defaults

  • Primary review command: codex review
  • Primary general command: codex exec
  • Default model: gpt-5.4 (referred to as $MODEL in recipes below)
  • Default review / consult reasoning config: -c model_reasoning_effort=xhigh
  • Default research reasoning config: -c model_reasoning_effort=high
  • Default research search path: top-level --search
  • Default posture: review-only first, write only when the user explicitly wants Codex to apply changes
  • Preferred automation path for writes: --full-auto before --dangerously-bypass-approvals-and-sandbox
  • Keep sandbox bypass available for exceptional cases, but only after explicit user confirmation for that specific run
  • Resume path: codex exec resume <session_id> "<follow-up>"

Prerequisites

  1. Verify Codex CLI is installed.
    • Bash / zsh: command -v codex
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Jan 20, 2026