the limit of capacity that has the tags
As far as I know there is no limit on the size of tags data (except your computers memory). I believe tags for the whole of the Linux kernal have been loaded by some users.
Also a quick look at the linked repository shows you seem to have used field two as a description when its intended to be the return type. Tags are not a manual, they are for locating entities in code, and are generally created by parsing the source, so there is no description available anyway.