claude-code-action/.github/workflows/claude-auto-review.yml

name: Auto Review PRs

on:
  pull_request:
    types: [opened, synchronize]

jobs:
  auto-review:
    runs-on: ubuntu-latest
    permissions:
      contents: read
      pull-requests: write
      issues: write
      id-token: write
    
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4
        with:
          fetch-depth: 0
          
      - name: Auto review PR
        uses: anthropics/claude-code-action@v1-dev
        with:
          anthropic_api_key: ${{ secrets.ANTHROPIC_API_KEY }}
          prompt: |
            Please review pull request #${{ github.event.pull_request.number }} in the ${{ github.repository }} repository.
            
            Focus on:
            - Code quality and best practices
            - Potential bugs or issues  
            - Suggestions for improvements
            - Overall architecture and design decisions
            - Documentation consistency
            
            Use the GitHub MCP tools to create a proper PR review with comments.
            Important: When using the GitHub MCP tools, make sure to use PR number ${{ github.event.pull_request.number }}.
            
            Create a review with constructive feedback and submit it as a COMMENT (not APPROVE).
          claude_args: '--allowedTools "mcp__github__get_pull_request,mcp__github__get_pull_request_diff,mcp__github__get_pull_request_files,mcp__github__create_pending_pull_request_review,mcp__github__add_comment_to_pending_review,mcp__github__submit_pending_pull_request_review,Read,Grep,Glob"'