Free & open source — no subscription required. Uses your own OpenAI API key. Typical cost: $0.01–0.03 per review.
AI-powered code review plugin that combines Claude's orchestration with OpenAI o3-mini's deep reasoning. Two AI powerhouses reviewing your code together.
Codex-CodeCheck analyzes your source code for security vulnerabilities, performance bottlenecks, and code quality issues. Claude reads and understands your codebase, then sends it to OpenAI's o3-mini model for an independent, autonomous analysis. Results are returned as structured findings with severity ratings and fix suggestions — directly in your chat.
| Command | Description |
|---|---|
/codex:setup |
Configure your OpenAI API key (first-time setup) |
/codex:review <file> |
General code review (security + performance + quality) |
/codex:multi <file1> <file2> ... |
Cross-file review with dependency analysis |
/codex:security <file> |
Dedicated security audit with CWE references |
/codex:optimize <file> |
Dedicated performance optimization analysis |
- Install the plugin
- Run
/codex:setupand enter your OpenAI API key - Run
/codex:review path/to/your/file.php
- OpenAI API key with access to o3-mini model
- Python 3 installed on your machine
PHP, JavaScript, TypeScript, Python, HTML, CSS, JSON, XML, SQL, Markdown, YAML, Go, Rust, Java, C#, and more.
The plugin automatically adjusts its analysis depth:
| Condition | Reasoning Effort | Notes |
|---|---|---|
| Small file (<1000 lines) | medium | Fast, cost-efficient |
| Large file (1000+ lines) | high | Deep analysis |
| Multiple files | high | Cross-file references |
| Security audit | high | Always thorough |
| Optimization audit | high | Always thorough |
This plugin is 100% free. No subscription, no hidden fees, no premium tier.
You only pay OpenAI directly for API usage (bring your own key). Typical costs:
- Small file (medium reasoning): ~$0.01-0.03
- Large file (high reasoning): ~$0.05-0.15
- Multi-file review: ~$0.10-0.30
That's cents, not dollars. A full month of daily reviews typically costs less than a coffee.
- Your code is sent to OpenAI's API for analysis
- Your API key is stored locally on your machine only
- No data is stored on any server
- No telemetry or tracking
MIT