AI PR Reviewer

An AI-powered Pull Request reviewer and chatbot that provides:

• Automated code reviews with inline comments
• A chatbot interface to discuss code changes
• Security scanning with Semgrep

Features

PR Analysis

• Summarizes PR changes for quick understanding
• Performs in-depth code analysis on modified files
• Identifies potential bugs, security issues, and performance concerns
• Posts reviews as both summary comments and inline feedback

Interactive Chatbot

• Chat about code changes directly in PR comments
• Ask questions about specific files or functionality
• Get explanations of complex parts of the PR
• Simply comment with /ai followed by your question

How to Use

PR Review

When a PR is opened or updated, the AI will automatically:

1. Generate a summary of changes
2. Review each modified file
3. Post review comments
4. Add a chatbot introduction comment

Chatbot

To chat with the AI about the code changes:

1. Comment on the PR with /ai followed by your question
   • Example: /ai What does the change in utils.py do?
   • Example: /ai Are there any performance concerns with this approach?
2. The AI will respond with a comment addressing your question

Local Usage

# Install dependencies
pip install -r requirements.txt

# Run a review on a PR
python pr_tool.py --pr-url "https://github.com/owner/repo/pull/123"

# Start an interactive chat session about a PR
python pr_tool.py --pr-url "https://github.com/owner/repo/pull/123" --chat

# Monitor PR comments for chatbot commands
python pr_tool.py --pr-url "https://github.com/owner/repo/pull/123" --monitor

Requirements

• Python 3.10+
• GitHub API token with PR access
• Ollama (for running the AI model locally)