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Codex Delegation Skill

Delegates coding, code review, and plan review to the OpenAI Codex CLI with strict sandbox and review-safety rules.

Dev & CodingIntermediate★ 1,632⑂ 246AI score 9/10Last updated: Aug 13, 2026

What it does

  • Detects requests like "use codex", "let gpt implement", "second opinion review" and routes them to codex exec.
  • Picks the right sandbox tier (read-only / workspace-write / danger-full-access) and forbids self-escalating privileges to bypass permission errors.
  • Presents review findings ordered by severity and hard-blocks auto-applying fixes without your approval.
  • Runs long jobs in the background with tee'd logs, and continues follow-ups via codex exec resume --last instead of re-sending context.
  • Ships reference docs for CLI flags, prompt patterns, adversarial/plan review workflows, and a JSON findings schema.

Who it's for

  • Developers who want a cross-model second opinion alongside Claude Code.
  • Teams wanting an independent review pass before commit or PR.
  • Anyone embedding a coding agent in unattended automation pipelines.

Examples

  1. "Have codex implement user authentication" → runs codex exec --full-auto "implement the user authentication feature" and reports changed files plus test results.
  2. "Adversarial review against main" → codex exec review --base main, findings only, no edits until you pick which to fix.
  3. "Build the UI from this mockup" → codex exec -i mockup.png --full-auto ... for image-driven implementation.

· · · Install guide · · ·

Try it now, no install

Paste this into Claude to use the skill without installing anything.

Read the instructions in this file and follow them to help me:
https://raw.githubusercontent.com/feiskyer/claude-code-settings/HEAD/skills/codex-skill/SKILL.md

What I want: (describe your task here)

If Claude can't open the link, open it yourself and paste the contents instead.

↓ If it works for you, download the ZIP below and install it. Then it runs on its own — no pasting each time.

Install in the Claude app (no terminal)
  1. Download the ZIP with the button below.
  2. In Claude, open Settings → Capabilities and turn on 'Code execution and file creation'. (one time)
  3. Go to Customize → Skills → + → 'Upload a skill' and upload the ZIP.
↓ Download ZIP
Install in Claude Code

Let Claude do it — paste this into Claude Code

Install the skill I found on Claude Skill Mart.
Copy the skills/codex-skill folder from the GitHub repo feiskyer/claude-code-settings into my ~/.claude/skills/codex-skill/.
When it's done, tell me in one line what this skill can do.

Install with a command instead

git clone https://github.com/feiskyer/claude-code-settings.git /tmp/ccs && mkdir -p ~/.claude/skills && cp -r /tmp/ccs/skills/codex-skill ~/.claude/skills/

⚠ This is a third-party skill. Check the source repository before installing.

  1. Install the Codex CLI first: npm i -g @openai/codex or brew install codex.
  2. Verify with codex --version and configure OpenAI (or Azure/proxy) auth in ~/.codex/config.toml.
  3. Clone the repo: git clone https://github.com/feiskyer/claude-code-settings.git
  4. Copy the skill: mkdir -p ~/.claude/skills && cp -r claude-code-settings/skills/codex-skill ~/.claude/skills/
  5. Confirm ~/.claude/skills/codex-skill/ contains SKILL.md, references/, and assets/.
  6. Restart Claude Code and try: "use codex to review my uncommitted changes".
  7. Note: codex runs outside Claude Code's permission system — prefer the read-only sandbox on sensitive repositories.
View source on GitHub ↗License: MIT