In order to use tool
- Checkout the project
- Set AccessKey variable in xdbHelper.aspx.cs to a random value
- Publish to existing Sitecore solution
- Open website in InPrivat session, open http://<your_site_name>/yourfolder/xDBHelper.aspx?key= page in the same window
Please note that you are responsible to add appropriate security measures in order to prevent others from accessing this page.