Mezzobit's Audience Control Module works to profile tag activity on the page, allowing for analysis of tags as well as actions such as alerts and blocking. The module can be enabled for tags in the container, and an additional script can be used to allow the ACM to function for all tags on the page.
To enable the ACM for the container, simply edit the container and check the "enable profiling" box.
If you would also like to profile elements outside of the TMS, check the "profile elements outside the container" box that appears. This will display a short script below the main container code.
You will then need to add this code to the head of your pages.
The key here is to insert the Mezzobit tags (particularly the synchronous tag) before any first- or third-party code that you want to monitor. For publishers, this would definitely include being loaded ahead of ad server tags and header bidder tags. So the rule of thumb is embed the synchronous Mezzobit tag as high up in the <head> section of the page as possible, usually right after the CSS and before the first JS calls. The Mezzobit async tag should be embedded just before the close of the <head>.