Claude Code Review workflow (reactjs/react-rails)

The Claude Code Review workflow from reactjs/react-rails, explained and optimized by Latchkey.

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Source: reactjs/react-rails.github/workflows/claude-code-review.ymlLicense Apache-2.0View source

What it does

This is the Claude Code Review workflow from the reactjs/react-rails repository, a real project running GitHub Actions. It is shown here with attribution under its Apache-2.0 license.

Below, Latchkey shows a faster, safer version produced by its optimization engine.

The workflow

workflow (.yml)

name: Claude Code Review

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@v1
        with:
          claude_code_oauth_token: ${{ secrets.CLAUDE_CODE_OAUTH_TOKEN }}
          prompt: |
            REPO: ${{ github.repository }}
            PR NUMBER: ${{ github.event.pull_request.number }}

            Please review this pull request and provide feedback on:
            - Code quality and best practices
            - Potential bugs or issues
            - Performance considerations
            - Security concerns
            - Test coverage

            Use the repository's CLAUDE.md for guidance on style and conventions. Be constructive and helpful in your feedback.

            Use `gh pr comment` with your Bash tool to leave your review as a comment on the PR.

          # See https://github.com/anthropics/claude-code-action/blob/main/docs/usage.md
          # or https://code.claude.com/docs/en/cli-reference for available options
          claude_args: '--allowed-tools "Bash(gh issue view:*),Bash(gh search:*),Bash(gh issue list:*),Bash(gh pr comment:*),Bash(gh pr diff:*),Bash(gh pr view:*),Bash(gh pr list:*)"'

The same workflow, on Latchkey

Removes redundant runs and caps runaway jobs. Added and changed lines are highlighted.

name: Claude Code Review
 
on:
  pull_request:
    types: [opened, synchronize]
    # Optional: Only run on specific file changes
    # paths:
    #   - "src/**/*.ts"
    #   - "src/**/*.tsx"
    #   - "src/**/*.js"
    #   - "src/**/*.jsx"
 
concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true
 
jobs:
  claude-review:
    timeout-minutes: 30
    # 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: latchkey-small
    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@v1
        with:
          claude_code_oauth_token: ${{ secrets.CLAUDE_CODE_OAUTH_TOKEN }}
          prompt: |
            REPO: ${{ github.repository }}
            PR NUMBER: ${{ github.event.pull_request.number }}
 
            Please review this pull request and provide feedback on:
            - Code quality and best practices
            - Potential bugs or issues
            - Performance considerations
            - Security concerns
            - Test coverage
 
            Use the repository's CLAUDE.md for guidance on style and conventions. Be constructive and helpful in your feedback.
 
            Use `gh pr comment` with your Bash tool to leave your review as a comment on the PR.
 
          # See https://github.com/anthropics/claude-code-action/blob/main/docs/usage.md
          # or https://code.claude.com/docs/en/cli-reference for available options
          claude_args: '--allowed-tools "Bash(gh issue view:*),Bash(gh search:*),Bash(gh issue list:*),Bash(gh pr comment:*),Bash(gh pr diff:*),Bash(gh pr view:*),Bash(gh pr list:*)"'

What changed

Run on Latchkey managed runners with one line (runs-on), which apply the fixes below automatically and self-heal transient failures. This example uses latchkey-small; pick the runner size that fits the job.
Cancel superseded runs when a branch or PR gets a newer push.
Add a job timeout so a hung step cannot burn hours of runner time.

1 third-party action is referenced by a movable tag. Pin it to the commit SHA (Latchkey resolves and applies this automatically) so a repointed tag cannot change what runs.

This workflow runs 1 job per trigger. On Latchkey the same minutes cost up to 58% less than GitHub-hosted, with zero queue time.

Actions used in this workflow

actions/checkout