codex-in-claude

codex-in-claude is a plugin for Claude Code from briandconnelly/codex-in-claude. Its manifest loads nothing; the 8 skills, 1 MCP server it bundles cost 994 tokens per session together, scanned A, original, MIT.

A Claude Code plugin that connects it to the OpenAI Codex command-line tool. It supports delegation, code review, and second opinions, with delegated work done in an isolated Git worktree.

In plain words
What is it for?
Use it to delegate coding tasks, request structured reviews, ask for a second opinion, and inspect a returned Git diff.
Why use it?
It lets Claude Code receive an independent review or coding result without directly applying Codex's changes to the current working tree.

Plugin for Claude Code

Written for Claude Code: a Claude Code plugin manifest. Also seen: mentions Claude Code; mentions Codex.

Good fit Use it to delegate coding tasks, request structured reviews, ask for a second opinion, and inspect a returned Git diff.

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Install in Claude Code
/plugin marketplace add briandconnelly/codex-in-claude/plugin install codex-in-claude
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Clone the repo
git clone --depth 1 https://github.com/briandconnelly/codex-in-claude

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for codex-in-claude

README.md
[![agentmods](https://agentmods.dev/badge/plugins/briandconnelly/codex-in-claude/codex-in-claude.svg)](https://agentmods.dev/plugins/briandconnelly/codex-in-claude/codex-in-claude)
Your own site
<a href="https://agentmods.dev/plugins/briandconnelly/codex-in-claude/codex-in-claude"><img src="https://agentmods.dev/badge/plugins/briandconnelly/codex-in-claude/codex-in-claude.svg" alt="Measured on agentmods" height="20"></a>
Per session not measured What this adds to a session before it is invoked.
When invoked not measured The manifest loads nothing itself; its 8 skills, 1 MCP server cost 994 tokens a session between them.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Security

Grade A, and why

codex-in-claude scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 3d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.claude-plugin/plugin.json · 37 lines

What it actually says

{
  "name": "codex-in-claude",
  "version": "0.22.0",
  "description": "Call OpenAI Codex from Claude Code for delegation, review, and second opinions.",
  "author": {
    "name": "Brian Connelly"
  },
  "homepage": "https://github.com/briandconnelly/codex-in-claude",
  "repository": "https://github.com/briandconnelly/codex-in-claude",
  "license": "MIT",
  "keywords": [
    "codex",
    "claude-code",
    "code-review",
    "delegation",
    "collaboration",
    "mcp"
  ],
  "skills": "./skills/",
  "commands": "./commands/",
  "mcpServers": "./.mcp.json",
  "interface": {
    "displayName": "Codex (for Claude Code)",
    "shortDescription": "Delegate to Codex, review changes, and get second opinions.",
    "longDescription": "codex-in-claude lets Claude Code call the OpenAI Codex CLI for an independent second opinion, structured code review, and delegated coding tasks. Delegation runs in an isolated git worktree and returns a reviewable diff that is never applied to your working tree. Read-only by default \u2014 which bounds what Codex writes, not what it can read.",
    "developerName": "Brian Connelly",
    "category": "Developer Tools",
    "capabilities": ["MCP", "Skills"],
    "websiteURL": "https://github.com/briandconnelly/codex-in-claude",
    "defaultPrompt": [
      "Get a second opinion from Codex on this approach.",
      "Have Codex review my current changes.",
      "Delegate this task to Codex and show me the proposed diff."
    ]
  }
}
Contents

What it installs

The manifest is a name and a version. 8 skills, 1 MCP server travel with it, and installing the plugin installs all of them — 994 tokens a session between them. Each is measured on its own page, and each can be installed alone.

Files

What ships with it

1 file beside plugin.json in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 3d ago Changed f1d5af5c4b57
  2. 8d ago First seen · 37 lines scan A aaaae3408aa8

Subscribe to this mod's changes

codex-in-claude is a plugin published in the GitHub repository briandconnelly/codex-in-claude (3 stars, last pushed 5d ago), licensed MIT. Its token cost is not measured: this kind of file is read by the harness, not the model. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.