Claude Code Prompts for Code Review in 2026

AI-powered code review prompts using Claude Code for better code quality

Introduction

Code review is essential for maintaining code quality, but it can be time-consuming. Claude Code can assist with thorough, intelligent code reviews.

This guide shares the best prompts for using Claude Code in your review process.

Quick Review Prompts

General Review

Review this code for quality, bugs, and improvements:

[CODE]

Focus on:
- Logic errors
- Security issues
- Performance problems
- Code style
- Best practices

Provide specific, actionable feedback.

Security Scan

Perform a security audit on this code:

[CODE]

Check for:
- SQL injection
- XSS vulnerabilities
- CSRF issues
- Authentication bypasses
- Data exposure
- Input validation

Provide vulnerability details and severity (High/Medium/Low).

Performance Check

Analyze this code for performance issues:

[CODE]

Identify:
- N+1 query problems
- Memory leaks
- Inefficient algorithms
- Unnecessary re-renders
- Large bundle impacts
- Unoptimized resources

Suggest fixes with expected performance gains.

Language-Specific Reviews

JavaScript/TypeScript

Review this JavaScript/TypeScript code:

[CODE]

Check for:
- Type safety
- Async/await issues
- Event handler cleanup
- Memory leaks
- React best practices
- Import optimization

Use ES6+ features where appropriate.

Python

Review this Python code:

[CODE]

Focus on:
- PEP 8 compliance
- Type hints
- Exception handling
- List comprehensions efficiency
- Virtual environment usage
- Package imports

Suggest Pythonic improvements.

React

Review this React component:

[CODE]

Check:
- Hook rules compliance
- Memoization usage
- Prop types
- Component re-renders
- Accessibility (a11y)
- Testing coverage

Recommend React-specific improvements.

Architecture Reviews

Design Pattern Check

Review this code for design pattern usage:

[CODE]

Identify:
- Applied patterns
- Pattern violations
- Over-engineering
- Under-engineering
- Coupling issues
- SOLID principles

Suggest pattern improvements.

Component Structure

Analyze this component structure:

[FILE 1]
[FILE 2]
[FILE 3]

Evaluate:
- Separation of concerns
- File organization
- Import structure
- Shared code usage
- Component hierarchy

Recommend restructuring if needed.

Pull Request Reviews

PR Summary

Create a code review summary for this PR:

Changes: [LIST]
Context: [BACKGROUND]

Include:
- What changed
- Why it changed
- Potential impacts
- Test coverage
- Migration needs (if applicable)

Keep it concise for PR description.

PR Feedback

Write constructive feedback for this PR:

[CODE CHANGES]

Include:
- Must fix issues
- Suggestions for improvement
- Questions for the author
- Praise for good work

Balance critical feedback with positive notes.

Refactoring Prompts

Technical Debt

Identify technical debt in this code:

[CODE]

Categorize:
- High priority (fix now)
- Medium priority (plan for soon)
- Low priority (fix when in area)

For each:
- Issue description
- Suggested fix
- Estimated effort

Legacy Code Modernization

Suggest modernization improvements for this legacy code:

[CODE]

Modernize:
- Old patterns to current best practices
- Deprecated APIs
- Manual processes to library functions
- Callbacks to async/await

Maintain backward compatibility where needed.

Testing Reviews

Test Coverage Analysis

Analyze test coverage for this code:

[CODE UNDER TEST]
[EXISTING TESTS]

Check:
- Edge cases covered
- Happy path coverage
- Error handling tests
- Mock usage
- Assertion quality

Suggest missing test scenarios.

Test Quality Review

Review these tests for quality:

[TEST CODE]

Evaluate:
- Test isolation
- Assertion specificity
- Test maintainability
- Flakiness risks
- Setup/teardown quality

Provide improvement suggestions.

Documentation Reviews

Docstring Audit

Review documentation for this code:

[CODE WITH DOCSTRINGS]

Check:
- Completeness
- Accuracy
- Examples
- Type information
- Version notes

Suggest improvements for clarity.

README Review

Review this README for completeness:

[README CONTENT]

Evaluate:
- Installation instructions
- Usage examples
- API documentation
- Contributing guide
- License
- Badges/status

Recommend missing sections.

Why These Prompts Work

  1. Comprehensive - Cover all aspects of code quality
  2. Actionable - Provide specific, fixable feedback
  3. Scalable - Use for quick reviews or deep analysis

Get the Complete Code Review Prompt Collection

Access our comprehensive collection of code review prompts:

  • Security audits
  • Performance analysis
  • Architecture reviews
  • Testing
  • Documentation

Get the Developer AI Prompts Pack →

Conclusion

Claude Code can significantly improve your code review process. Use these prompts for faster, more thorough reviews that catch issues before they reach production.

Tags: Claude, Code Review, Programming, Quality Assurance, Development