Thanks you for using Tag Meta.
I'm not sure I got you question. At the moment Tag Meta works when an item match the current URL. The matching is based on URL part, so if you are able to catch the category by URL, then you could use Tag Meta. Another problem could be if you need to set meta info dinamically. For this Tag Meta provide some macros, but I think you would like to have a specific macro for the extension you need.
This is not so difficult, but without more info I can't say more.
Let me know if you need more info.
Best regards,
Luigi