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How to Use Claude Code for Code Review

Claude Code excels at code reviews because it analyzes entire codebases systematically and provides consistent, detailed analysis across security, performance, and code quality.

Comprehensive Review Process

  • Full File Review: "Review UserController.js for code quality, potential bugs, security issues, and adherence to best practices"
  • Targeted Analysis: "Focus on the authentication logic in lines 45-80 and check for security vulnerabilities"
  • Pattern Consistency: "Compare this component with existing components and ensure it follows our established patterns"
  • Performance Assessment: "Analyze this function for performance bottlenecks and suggest optimizations"

Review Categories

  • Code Quality: Variable naming, function structure, maintainability, and adherence to project patterns
  • Security Review: Input validation, authentication flows, data exposure, and dependency vulnerabilities
  • Performance Analysis: Time complexity, Big O notation, memory usage, and database query efficiency
  • Architecture Assessment: Separation of concerns, design patterns, and overall code organization

Effective Review Prompts

Specific, targeted prompts produce better review results than vague requests. Focus on particular aspects of code quality rather than asking for generic reviews.

  • Quality Review: "Review PaymentProcessor.js for error handling, input validation, and edge cases. Suggest specific improvements"
  • Security Review: "Security review the authentication module. Check for token leakage, session fixation, and access controls"
  • Architecture Review: "Review the shopping cart feature structure. Assess separation of concerns and suggest improvements"
  • Legacy Assessment: "This code feels fragile. Identify technical debt and suggest a low-risk refactoring strategy"

Team Review Workflows

Claude Code integrates well into team development processes, complementing human reviews rather than replacing them.

  • Pre-PR Review: Self-review with Claude Code before submitting pull requests
  • Second Opinion: Get Claude's perspective when unsure about human reviewer feedback
  • Learning Tool: Help junior developers understand preferred patterns and practices
  • Standards Enforcement: Maintain consistent coding standards across the team

See Also: Better Prompts|Debugging Guide|Getting Started