PR Review Agent
PR review agent is an automated code review system that acts like having a senior developer on your team 24/7. When developers open pull requests on GitHub, this agent automatically analyzes the code changes and posts detailed feedback directly as PR comments. It also scans entire repositories to identify code quality issues and creates GitHub issues for tracking improvements.
Technologies Used
Python, FastAPI, API development, Artificial Inteligence
The Goal:
Solve the bottleneck of code reviews in development teams. Many projects suffer from delayed reviews because senior developers are busy, or important issues get missed during manual reviews. The goal was to create a system that could:
Provide immediate feedback on pull requests without human intervention
Maintain consistent code quality standards across all reviews
Free up senior developers to focus on architecture and complex problems instead of catching basic issues
Help junior developers learn best practices through detailed, educational feedback
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The Challenge:
The main technical hurdle was building a robust GitHub integration that could handle different authentication methods and webhook
events reliably. GitHub's API has specific requirements for app authentication and
managing JWT tokens with proper permissions took careful implementation.
Another challenge was crafting the right prompts for the LLM to give useful, actionable feedback instead of generic comments.
The system needed to analyze code diffs intelligently and provide feedback that was specific
enough to be helpful but concise enough to not overwhelm developers.
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The Result
Deployed a production-ready FastAPI application that successfully automates code reviews for GitHub repositories. The system can:
Automatically review pull requests and post structured feedback within seconds of PR creation.
Analyze entire codebases and generate prioritized GitHub issues for code quality improvements
Handle both public and private repositories through proper GitHub App authentication
Stay alive and responsive using GitHub Actions for continuous deployment
The agent provides consistent, detailed reviews covering security, performance, best practices, and potential bugs. Teams using
this system report faster development cycles and improved code quality. As developers get immediate feedback and can fix issues
before they merge to the main branches.
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