README.md

To delete all your workflow runs, use this workflow file .github/workflows/clean.yml in your root directory and run it via workflow_dispatch.

delete.yml

name: 🗑 Delete workflow runs 🗑
on:
  workflow_dispatch:
    inputs:
      days:
        description: 'Number of days.'
        required: true
        default: "5"
      minimum_runs:
        description: 'Minimum runs to keep.'
        required: true
        default: "1"

jobs:
  delete_runs:
    runs-on: ubuntu-latest
    steps:
      - name: Delete workflow runs
        uses: Mattraks/delete-workflow-runs@main
        with:
          token: ${{ secrets.GITHUB_TOKEN }}
          repository: ${{ github.repository }}
          retain_days: ${{ github.event.inputs.days }}
          keep_minimum_runs: ${{ github.event.inputs.minimum_runs }}