Free forever — no credit card needed

Completely free. Just bring your API key.

CodeMouse is free to use. Connect your OpenAI key and reviews start immediately. You pay OpenAI directly — typically pennies per review.

Free Forever
$0

You only pay OpenAI for usage — ~$0.01–$0.05 per review

  • Unlimited PR reviews — no caps, no limits
  • Bug & logic error detection
  • Security vulnerability scanning
  • Performance issue analysis
  • Plain-English review summaries
  • All programming languages supported
  • Full review history & analytics dashboard
  • GitHub PR comment integration
  • Bring your own OpenAI key — pay OpenAI directly
Start reviewing for free

No credit card. No signup form. Just GitHub OAuth.

Connect GitHub

Install the app on your repos

Add OpenAI key

Paste your key in Settings

Auto reviews

Every PR gets reviewed instantly

Security First

Every PR scanned for vulnerabilities before merge.

Under 60 Seconds

Review posted automatically within seconds.

Track Quality

See code health trends over time in Analytics.

Frequently asked questions

Is CodeMouse really free?

Yes. CodeMouse itself is completely free. You bring your own OpenAI API key and pay OpenAI directly for usage — typically $0.01–$0.05 per PR review using GPT-4o-mini.

What languages does it support?

All major languages — JavaScript, TypeScript, Python, Go, Ruby, Java, PHP, Rust, C++, Swift, Kotlin, and more.

Does it review every PR automatically?

Yes. Once installed, CodeMouse posts a structured review comment within 60 seconds of a PR being opened. No manual trigger needed.

Is my code safe?

Your code diff is sent directly to OpenAI using your own API key. CodeMouse never stores your source code.

How much will OpenAI charge me?

GPT-4o-mini is very cheap. A typical PR review costs $0.01–$0.05. Even 100 reviews a month would cost around $1–5.

Do I need to configure anything?

Just two steps: install the GitHub App on your repositories, then add your OpenAI API key in Settings. That's it.