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Get continuous code review with Codex

The CodeRabbit plugin for Codex creates autonomous AI development workflows. Codex can trigger CodeRabbit reviews directly through natural-language prompts, enabling you to build features, run code reviews, and fix issues without manual context switching. This integration makes AI coding more independent, with built-in quality gates that catch issues before they reach production.
This guide covers using the CodeRabbit plugin with Codex. For standalone CLI usage, see CLI overview.
CodeRabbit analyzes your code changes and surfaces specific issues, then Codex applies fixes based on that review context.

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Why integrate these tools

Expert issue detection

CodeRabbit spots race conditions, memory leaks, and logic errors that generic linters miss. Get the same pattern recognition that powers our PR reviews.

AI-powered fixes

Codex implements fixes with full context from CodeRabbit’s analysis. Complex architectural changes handled intelligently.

Context preservation

The plugin keeps review context inside Codex so findings can be turned into follow-up fixes without re-explaining the problem.

Continuous workflow

Stay in development flow - run reviews, apply fixes, and iterate without switching tools or losing mental context.

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Installation

1

Install Codex

Install Codex following the platform-specific instructions. Ensure you can launch Codex from your terminal.
2

Install and authenticate CodeRabbit CLI

Install and authenticate the CodeRabbit CLI:
curl -fsSL https://cli.coderabbit.ai/install.sh | sh
Authenticate
coderabbit auth login
A browser window opens automatically. Sign in to CodeRabbit and the authentication completes in the browser.
3

Install CodeRabbit plugin

Open the plugin marketplace, search for coderabbit, and install the CodeRabbit plugin.
If the plugin does not appear immediately after installation, reload or restart Codex so it refreshes the local plugin catalog.
4

Verify installation

Ask Codex to run a CodeRabbit review:
Review my current changes with CodeRabbit
The plugin will verify your CodeRabbit CLI installation and authentication when first used.

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Usage

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Running code reviews

Use natural language to trigger the plugin from Codex:
Review my current changes with CodeRabbit
The plugin will:
  • verify CLI installation and authentication
  • run the review
  • summarize the diff first
  • report how many findings CodeRabbit found
  • present findings with severity, file path, impact, and recommended fix direction
Customize your review by being explicit about scope: 
Review my committed changes with CodeRabbit
Review my uncommitted changes with CodeRabbit
Review this branch against main with CodeRabbit
Check my branch for security issues with CodeRabbit
What are the highest-risk issues in these changes?
For longer reviews, Codex should wait quietly for completion rather than narrating intermediate polling or processing states.

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Integration workflow

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Use CodeRabbit while building new features

1

Request implementation + review

Ask Codex to implement a feature and run a CodeRabbit review:
Sample prompt
Please implement phase 7.3 of the planning doc and then review it with CodeRabbit. Fix any issues that are found.
Key components:
  • Implement the feature: Codex codes the requested functionality
  • Run CodeRabbit review: Uses the plugin to analyze code
  • Fix issues: Codex addresses the problems CodeRabbit identifies
2

Codex implements and triggers review

Codex:
  1. Implements the requested feature
  2. Runs the CodeRabbit plugin review flow
  3. Waits for the analysis to complete
3

CodeRabbit analysis and task creation

When CodeRabbit completes, Codex:
  1. Summarizes the changes in the diff
  2. Reports how many findings were found
  3. Works through each finding with severity, file path, impact, and fix direction
4

Automated issue resolution

Codex systematically works through the findings, implementing fixes and iterating until the important issues are resolved.

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Advanced usage

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CLI output modes

When running the CodeRabbit CLI directly outside the plugin, use the output mode that best fits your workflow: 
# Agent mode - structured JSON output for agent workflows
coderabbit --agent

# Plain mode - detailed terminal output
coderabbit --plain

# Interactive mode - terminal UI for manual review
coderabbit --interactive
ModeBest for
--agentAgent workflows and structured output consumers
--plainHuman-readable terminal output during manual workflows
--interactiveManual review in an interactive terminal UI
The Codex plugin chooses the appropriate review flow automatically, so direct CLI usage is mainly useful for debugging or manual review.

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Configure CodeRabbit for Codex

CodeRabbit automatically reads your AGENTS.md file, so you can add context there on how code reviews should run, your coding standards, and architectural preferences.
This is a Pro paid plan feature.

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Remove or turn off a plugin

To remove the CodeRabbit plugin, reopen it from the plugin browser and select Uninstall plugin.
Uninstalling the plugin removes the plugin bundle from Codex, but the CodeRabbit CLI remains installed and continues to work independently.
To keep the plugin installed but disable it temporarily, set its entry in ~/.codex/config.toml to enabled = false, then restart Codex.

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Troubleshooting

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Plugin not found

If the plugin isn’t available:
  1. Reload Codex: Restart or reload Codex after installation so it refreshes the plugin catalog
  2. Check plugin installation: Confirm CodeRabbit appears in the Codex plugin marketplace and is enabled
  3. Reinstall if needed: Remove and reinstall the plugin from the marketplace

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CLI not authenticated

If you see authentication errors:
  1. Check CLI authentication: Run coderabbit auth status --agent
  2. Re-authenticate: Run coderabbit auth login --agent
  3. Verify CLI installation: Ensure the CLI is in your PATH and accessible from Codex’s environment

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CodeRabbit not finding issues

If CodeRabbit isn’t detecting expected issues:
  1. Check git status: CodeRabbit analyzes tracked changes - run git status to verify
  2. Specify review scope: Ask Codex to review committed, uncommitted, or base-branch changes explicitly
  3. Review file types: CodeRabbit focuses on code files, not docs or configuration
  4. Run the CLI directly: Use coderabbit --plain if you want to inspect findings outside the plugin flow

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Review taking too long

CodeRabbit reviews may take several minutes depending on the scope of changes:
  1. Review smaller changesets: Work on focused branches and smaller diffs
  2. Limit the scope: Ask Codex to review only committed or uncommitted changes
  3. Set the right base branch: Be explicit when your comparison point is not main
  4. Let the review finish: Long-running reviews are expected; the plugin should wait quietly rather than reporting intermediate polling states
The integration creates a more thorough review process than either tool alone. Expect comprehensive analysis that catches issues that would otherwise reach production.

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What’s next

Claude Code integration

Compare the Codex plugin flow with the Claude Code plugin workflow and command surface.

Command-Line Review Tool

Use the standalone CodeRabbit CLI directly when you want manual review workflows outside Codex.

CodeRabbit Skills

Explore the skill-based integration path for other AI coding agents that support Skills.