claude-code-review is a Codex plugin that lets Codex ask the local Claude Code CLI for external review, adversarial critique, and delegated investigation work.
The motivation is practical: sometimes the fastest way to find weak assumptions in a change is to route the diff through a second reviewer with a different toolchain.
Review without handing over control
The default review path is read-only. It can inspect staged, unstaged, untracked, or branch diffs and return findings without editing the working tree. A separate explicit task mode exists for write-capable rescue work.
That boundary matters because review should be easy to request without worrying that the reviewer will rewrite unrelated files.
Why package it as a plugin
A one-off shell command is easy to forget. A Codex plugin can encode setup checks, review modes, background job status, cancellation, and result retrieval into a repeatable workflow.
The project is less about model novelty and more about engineering workflow: make a second opinion cheap enough to use before the expensive mistake ships.