When you are logged into the admin and have the application selected, you can add the following URL parameter to the URL at the end:
This will pull up the PureClarity Debug Bar. The PC Debug Bar allows you, among other things, to see which BMZs are active on your site, if they’re pulling data, and what the data is. This is really useful for integration.
This is the status page. This will only show if you’re logged into the admin at the same time, to prevent accidental use. This tells you the debugger is functional (active). The Template Preview tells you whether any templates on the site are in Preview mode.
The Events tab shows all the events sent from the site to PureClarity and the responses from PureClarity. This is useful if you are doing a manual integration as it helps you to see if the data being sent to PureClarity is correct.
The Zones tab gives you an overview of all the BMZs that are active on the page. It shows what context information is being sent to PureClarity (such as the product SKU) and also shows whether PureClarity understood the request. Again, this is useful whilst you are integrating.
Finally, the Previews tab shows you which, if any, templates are being previewed, what type of template it is, and what version it is.
Check out further information on templating here.
If you are Server-side integration, your site may be communicating some of the info from a non-PureClarity source ad hence BMZs may not show on the Debugger tool.