Automated code review

Developers report that code critics can reduce about 50% of the effort in finding problems.
Worth automating doing on pull requests
Can be a subagent
Use /diff before review so you know exactly what changed
There are bundled review commands
- /code-review is for bugs and risks; /simplify is for cleanup
- /security-review is a deeper read-only security pass
- /review reviews a GitHub PR; /code-review ultra runs a cloud review

Running the code review in the session that wrote the code exposes the thinking behind the development; using a subagent or extra session makes it a clean review.

It also keeps the context relevant.

Narration

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Transcript

Automated Code Review: 50% Effort Reduction

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Here's a powerful use case for Claude Code: automated code review. And I'm not exaggerating when I say it can reduce your code review effort by fifty percent.

The traditional code review process is time-consuming. You read through diffs, check for common issues, verify coding standards, look for potential bugs. It's necessary work, but it's also repetitive.

With Claude Code, you can automate the first pass. Start with /diff so you know exactly what changed. Then use /code-review for correctness bugs and maintainability risks, /simplify for cleanup-only improvements, /security-review for a deeper read-only security pass, and /review when you want to review a GitHub pull request.

For more serious cases, /code-review ultra runs a cloud review. That is not the default for every small change, but it is a useful option when the risk is high or the diff is large.

What you get is a pre-reviewed pull request. Claude has already caught the obvious issues, so you can focus on the high-level concerns: architecture decisions, business logic correctness, design patterns. The mechanical checks are done.

This doesn't replace human code review - you still need that critical thinking and domain knowledge. But it eliminates the tedious parts, letting you focus on what actually matters. That's where the fifty percent reduction comes from: automating the routine checks so you can concentrate on the hard problems.