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Local Codex Delegation

Invoke the local OpenAI Codex CLI as a non-interactive sub-agent to generate, refactor, or review code from Claude Code.

Dev & CodingIntermediate★ 1,323⑂ 212AI score 8/10Last updated: Aug 8, 2026

What it does

  • Runs your locally installed Codex CLI in non-interactive codex exec mode to offload coding work.
  • Wraps calls with scripts/codex_wrapper.py, returning structured JSON (success, exit code, elapsed time, final message).
  • Auto-detects the Codex binary across desktop app, npm global, Homebrew, and which codex.
  • Forces ChatGPT Pro OAuth from ~/.codex/auth.json and explicitly forbids API keys, avoiding pay-per-use charges.
  • Lets you pick sandbox level (read-only / workspace-write / danger-full-access), model, and timeout.

Who it's for

  • Developers with a ChatGPT Pro subscription who want to split work between Claude Code and Codex.
  • Teams automating pre-commit review of uncommitted diffs.
  • Anyone offloading long code-generation runs to a separate agent.

Examples

  1. "Review the uncommitted changes in this repo with codex" → codex_wrapper.py review /path/to/repo gpt-5.5 true 300.
  2. "Have codex write a Python fibonacci function" → exec mode with workspace-write sandbox.
  3. "Check codex status" → codex_wrapper.py status to verify CLI path and OAuth health.

· · · 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/daymade/claude-code-skills/HEAD/local-codex/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 local-codex folder from the GitHub repo daymade/claude-code-skills into my ~/.claude/skills/local-codex/.
When it's done, tell me in one line what this skill can do.

Install with a command instead

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

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

  1. Open a terminal.
  2. Clone the repo: git clone https://github.com/daymade/claude-code-skills.git
  3. Create the skills folder: mkdir -p ~/.claude/skills
  4. Copy the skill: cp -r claude-code-skills/local-codex ~/.claude/skills/
  5. Install Codex CLI (e.g. npm i -g @openai/codex or the Codex desktop app).
  6. Run codex login and finish the browser OAuth flow. Do NOT set OPENAI_API_KEY.
  7. Verify Python 3 is available: python3 --version
  8. Restart Claude Code and try "use codex to review my code" to trigger the skill.
View source on GitHub ↗License: MIT