hello
thank for your answer 
I think that you should reconsidered your position on plex.
why ? for many reason,
1) plex is very fast
2) plex server is very simple to use (i try all other media center ) , it's the best to manage the metadata
3) Plex is much more stable  (i use kodi for 1 month  now  kodi is slow, It is already impossible to me to close cleanly kodi )
4) to play media over the house  it's the best .

now i don't have sufficient skill  to create a plugin ,  but you need to understand that
i don't  want  manage the plex server  with VC   (many user think like me) 
i just want it to navigate  in plex media player  and do a vocal search 

for the api read this
http://forums.plex.tv/discussion/188378/client-http-api#latest
https://github.com/plexinc/plex-media-player/wiki/Remote-control-API

now i buy your software on 26 march  , i don't use it anymore  why ? because it's kodi it's self not work  properly  (not your software )

please give a try to plex is a very good software
i hope you should reconsidered your position on plex   BECAUSE it's more easy if you create  a plugin 

" I don't personally wish to invest the time necessary to create a plugin for Plex."  if i paid  for your time did you take the time to create this  ? Which would be your price ?

hello

i have a question why vox haven't a plugin  for  plex ?
i trying to follow the tutorial  Plex commands -- Getting Started
http://voxcommando.com/forum/index.php?topic=1637.0
but it's not working 
i use vox with kodi 17 work very well 
you do a plugin for mb3,kodi and other media center why not plex ?

i try many software  but your is very magic with kodi thank for that

i was use mb2 and mb3  and kodi  but plex is the best software  for mediacenter

can you give me some help ? i'm very sorry for my english