I see we can [fetch tags via the API][1], which works fine
but, sadly, there doesn't seem to be a way to get the count of all possible tags. 

Currently http://stackoverflow.com/tags shows 36 tags per page with pagination up to page 1426, which means there are around ~51336 tags. 

Does the API have any such feature? 


  [1]: https://api.stackexchange.com/2.2/badges?order=desc&sort=rank&site=stackoverflow