For Freelance Web Developers ·
What you'll accomplish
When you're the only developer on a project, there's no one else reading your diff before it ships. CodeRabbit reviews every pull request automatically, flagging likely bugs, security issues, and style inconsistencies before a client ever sees them. It's a second set of eyes that never skips a review because a deadline is close.
What you'll need
Go to CodeRabbit's site and start the free signup. Sign in using your GitHub account so CodeRabbit can request the authorization it needs.
What you should see: A GitHub OAuth authorization screen asking you to approve the CodeRabbit GitHub App.
During installation, GitHub asks which repositories to grant the app access to. You can choose all repositories on your account, or select specific ones.
What you should see: A confirmation screen listing the repositories CodeRabbit now has access to, and a redirect back to the CodeRabbit dashboard.
Troubleshooting: If a client repository doesn't appear in the selection list, check that your GitHub account actually has admin rights on it. Contributor-level access alone usually isn't enough to install a GitHub App.
Rather than waiting for your next real feature branch, open a small test pull request to confirm the integration works.
What you should see: CodeRabbit posts a review comment directly on the pull request, summarizing what changed and flagging anything it noticed, even on a trivial diff.
On your next actual feature branch, open the pull request as normal and let CodeRabbit run.
What you should see: Inline comments on specific lines where it found something worth flagging, plus a summary comment at the top of the PR describing the overall change and any risk areas.
Not every flagged comment needs immediate action. Work through them the way you would a human reviewer's comments.
Troubleshooting: If CodeRabbit repeatedly flags something that's intentional (a pattern your client's existing codebase already uses consistently), check whether the tool supports a configuration file or repository setting to reduce noise on that specific pattern going forward.
CodeRabbit runs on GitHub's own infrastructure, so it needs no GitHub Actions workflow or CI pipeline configuration on your end. Once it's installed on a repository, every new pull request gets reviewed automatically without any extra steps from you.
What you should see: Every future PR on that repository picking up an automatic review within a few minutes of opening, with no manual trigger needed.
CodeRabbit also offers an extension for editors like VS Code, Cursor, and Windsurf, signed in with the same account. If you spend most of your day in one of those editors, installing it lets you see review-style feedback while you're still writing the code, before you even open a pull request. If GitHub Copilot is already active in your editor, the two tools serve different purposes: Copilot suggests code as you type, CodeRabbit reviews what you've already written.
CodeRabbit reviews automatically rather than responding to typed prompts, but you can guide it through PR descriptions and comments: