claude-code-review.yml

name: Claude Code Review

on:
  pull_request_target:
    types: [opened, synchronize, ready_for_review, reopened]

jobs:
  claude-review:
    runs-on: ubuntu-latest
    permissions:
      contents: read
      pull-requests: write
      issues: read
      actions: read
      id-token: write

    steps:
      - name: Checkout PR head (fork)
        uses: actions/checkout@v4
        with:
          ref: ${{ github.event.pull_request.head.sha }}
          fetch-depth: 1
          
      - name: Remove prior Claude review comment (so review runs again)
        env:
          GH_TOKEN: ${{ github.token }}
        run: |
          pr=${{ github.event.pull_request.number }}
          repo=${{ github.repository }}
      
          # Find first issue comment whose body starts with "## Claude Code Review"
          comment_id=$(gh api repos/$repo/issues/$pr/comments \
            --jq '.[] | select(.body | startswith("## Claude Code Review")) | .id' | head -n 1)
      
          if [ -n "$comment_id" ]; then
            echo "Deleting prior Claude review comment id=$comment_id"
            gh api -X DELETE repos/$repo/issues/comments/$comment_id
          else
            echo "No prior Claude review comment found."
          fi
          
      - name: Run Claude Code Review
        id: claude-review
        uses: anthropics/claude-code-action@v1
        with:
          claude_code_oauth_token: ${{ secrets.CLAUDE_CODE_OAUTH_TOKEN }}
          github_token: ${{ github.token }}

          plugin_marketplaces: 'https://github.com/anthropics/claude-code.git'
          plugins: 'code-review@claude-code-plugins'

          claude_args: >
            --allowedTools
            "Bash(gh pr view:*)"
            "Bash(gh pr diff:*)"
            "Bash(gh pr comment:*)"
            "Bash(gh api:*)"
            "Bash(gh search code:*)"
            "Bash(cat:*)"
            "Bash(ls:*)"
            "Bash(grep:*)"
            "Bash(python3:*)"
            "Bash(git:*)"

          prompt: |
            /code-review:code-review ${{ github.repository }}/pull/${{ github.event.pull_request.number }}

            Post the results as ONE top-level PR comment titled "Claude Code Review".

            Output requirements (even if no issues):
            - Start with: files changed count + list up to 15 changed file paths
            - Then: a short summary of what the PR changes (3–6 bullets)
            - Then: findings:
              - If issues: list them with file path + line numbers when possible
              - If no issues: list at least 3 concrete "improvement opportunities" with file paths

            If you cannot access the diff/files, say exactly what is blocked.
            If posting a PR comment is blocked, write the full review to the GitHub Actions job summary instead.

            IMPORTANT:
            - Do NOT stop just because a previous "Claude Code Review" comment exists.
            - If a prior Claude review exists, post a NEW comment titled "Claude Code Review (updated)" that includes:
              - current head SHA: ${{ github.event.pull_request.head.sha }}
              - files changed count + up to 15 file paths
              - 3–6 bullet summary of changes
              - findings or at least 3 improvement opportunities with file paths
            Post as ONE top-level PR comment.

          additional_permissions: |
            actions: read