Claude Code Github Action Tool System Prompt

on:
  issue_comment:
    types: [created]
  pull_request_review_comment:
    types: [created]
  issues:
    types: [opened, assigned]
  pull_request_review:
    types: [submitted]

jobs:
  claude:
    if: |
      (github.event_name == 'issue_comment' && contains(github.event.comment.body, '@claude')) ||
      (github.event_name == 'pull_request_review_comment' && contains(github.event.comment.body, '@claude')) ||
      (github.event_name == 'pull_request_review' && contains(github.event.review.body, '@claude')) ||
      (github.event_name == 'issues' && (contains(github.event.issue.body, '@claude') || contains(github.event.issue.title, '@claude')))
    runs-on: ubuntu-latest
    permissions:
      contents: read
      pull-requests: read
      issues: read
      id-token: write
      actions: read # Required for Claude to read CI results on PRs
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4
        with:
          fetch-depth: 1

      - name: Run Claude Code
        id: claude
        uses: anthropics/claude-code-action@beta
        with:
          anthropic_api_key: \${{ secrets.ANTHROPIC_API_KEY }}

          # This is an optional setting that allows Claude to read CI results on PRs
          additional_permissions: |
            actions: read

          # Optional: Specify model (defaults to Claude Sonnet 4, uncomment for Claude Opus 4)
          # model: "claude-opus-4-20250514"

          # Optional: Customize the trigger phrase (default: @claude)
          # trigger_phrase: "/claude"

          # Optional: Trigger when specific user is assigned to an issue
          # assignee_trigger: "claude-bot"

          # Optional: Allow Claude to run specific commands
          # allowed_tools: "Bash(npm install),Bash(npm run build),Bash(npm run test:*),Bash(npm run lint:*)"

          # Optional: Add custom instructions for Claude to customize its behavior for your project
          # custom_instructions: |
          #   Follow our coding standards
          #   Ensure all new code has tests
          #   Use TypeScript for new files

          # Optional: Custom environment variables for Claude
          # claude_env: |
          #   NODE_ENV: test

on:
  pull_request:
    types: [opened, synchronize]
    # Optional: Only run on specific file changes
    # paths:
    #   - "src/**/*.ts"
    #   - "src/**/*.tsx"
    #   - "src/**/*.js"
    #   - "src/**/*.jsx"

jobs:
  claude-review:
    # Optional: Filter by PR author
    # if: |
    #   github.event.pull_request.user.login == 'external-contributor' ||
    #   github.event.pull_request.user.login == 'new-developer' ||
    #   github.event.pull_request.author_association == 'FIRST_TIME_CONTRIBUTOR'

    runs-on: ubuntu-latest
    permissions:
      contents: read
      pull-requests: read
      issues: read
      id-token: write

    steps:
      - name: Checkout repository
        uses: actions/checkout@v4
        with:
          fetch-depth: 1

      - name: Run Claude Code Review
        id: claude-review
        uses: anthropics/claude-code-action@beta
        with:
          anthropic_api_key: \${{ secrets.ANTHROPIC_API_KEY }}

          # Optional: Specify model (defaults to Claude Sonnet 4, uncomment for Claude Opus 4)
          # model: "claude-opus-4-20250514"

          # Direct prompt for automated review (no @claude mention needed)
          direct_prompt: |
            Please review this pull request and provide feedback on:
            - Code quality and best practices
            - Potential bugs or issues
            - Performance considerations
            - Security concerns
            - Test coverage

            Be constructive and helpful in your feedback.

          # Optional: Use sticky comments to make Claude reuse the same comment on subsequent pushes to the same PR
          # use_sticky_comment: true

          # Optional: Customize review based on file types
          # direct_prompt: |
          #   Review this PR focusing on:
          #   - For TypeScript files: Type safety and proper interface usage
          #   - For API endpoints: Security, input validation, and error handling
          #   - For React components: Performance, accessibility, and best practices
          #   - For tests: Coverage, edge cases, and test quality

          # Optional: Different prompts for different authors
          # direct_prompt: |
          #   \${{ github.event.pull_request.author_association == 'FIRST_TIME_CONTRIBUTOR' &&
          #   'Welcome! Please review this PR from a first-time contributor. Be encouraging and provide detailed explanations for any suggestions.' ||
          #   'Please provide a thorough code review focusing on our coding standards and best practices.' }}

          # Optional: Add specific tools for running tests or linting
          # allowed_tools: "Bash(npm run test),Bash(npm run lint),Bash(npm run typecheck)"

          # Optional: Skip review for certain conditions
          # if: |
          #   !contains(github.event.pull_request.title, '[skip-review]') &&
          #   !contains(github.event.pull_request.title, '[WIP]')