Automatically closes all sub-issues associated with a parent issue when the parent is closed.

• Automatically closes all open sub-issues when parent issue is closed
• Adds a summary comment to the parent issue listing closed sub-issues
• Handles large numbers of sub-issues safely with pagination

Add this workflow to your repository at .github/workflows/close-sub-issues.yml:

name: Close Sub-Issues

on:
  issues:
    types: [closed]

permissions:
  issues: write      # Required to close issues and add comments
  contents: read     # Required to access repository

jobs:
  close-sub-issues:
    runs-on: ubuntu-latest
    steps:
      - name: Close Sub-Issues
        uses: RehabAbotalep/close-sub-issues-action@v1
        with:
          github_token: ${{ secrets.GITHUB_TOKEN }}
          issue_number: ${{ github.event.issue.number }}
          repository: ${{ github.repository }}

This action requires the following permissions to work correctly:

Note: If you encounter a 403 - Resource not accessible by integration error, make sure you've added the permissions block to your workflow file as shown above.

When a parent issue is closed, this action will:

1. Find all open sub-issues
2. Close each sub-issue
3. Add a comment to the parent issue:

✅ Automatically closed the following sub-issues: #2 #3 #4

MIT