Topic on Extension talk:TemplateData

Unclear request, suggest to use the API.

I would like to create a DPL that lists all the templates in a category, along with the description listed inside their data block. Is this possible?

What is a DPL?

Searching categories is possible with CirrusSearch, even recursively with the deepcat: keyword. The TemplateData extension comes with its own action API called action=templatedata. You have probably see the documentation. These APIs can be combined with the generator feature of the query API. We improved this particular feature just recently. I hope this helps.