PR Reviewer

A local-first GitHub PR review tool built with Reflex. Paste a PR URL, fetch the diff, and get AI-powered code reviews streamed file-by-file.

Prerequisites

• just - command runner
• uv - Python package manager

Setup

just install
cp .env.example .env  # Add your API keys
just dev

Environment Variables

Variable	Required	Description
ANTHROPIC_API_KEY	Yes*	Claude API key
OPENAI_API_KEY	Yes*	OpenAI API key
GITHUB_TOKEN	No	GitHub PAT for private repos & higher rate limit

* At least one AI provider key is required.

Tasks

Command	Description
just dev	Start the development server
just lint	Run ruff and pyright checks
just fix	Auto-fix linting issues and format code
just format	Format code with ruff
just typecheck	Run pyright type checking
just install	Install dependencies with uv

Features

• Fetch public/private PRs via GitHub API
• Stream AI code reviews with Anthropic (Claude) or OpenAI (GPT)
• File-by-file navigation with syntax-highlighted diff viewer
• Review individual files or batch review all at once
• In-app settings for API keys, provider, and model selection

AI Providers

Provider	Models
Anthropic	Claude Opus 4.5, Claude Sonnet 4.5, Claude Haiku 4.5
OpenAI	GPT-5.2, GPT-5.1 Codex, GPT-5.1 Codex Mini, GPT-4o