HTTP Post Inside ESO Addon
 

Is it possible to make a request to a webservice on a domain I host that would pass over some in game information stats?

Lua functions that interact with anything external to ESO's API are all disabled by the ESO Lua implementation.

I figured as much for security reasons. Wish there was a way to post live leaderboard stats to a website though.

Thank you for your time.

Only way is
to write the stats in the SavedVars and create an extern programm which reads the SavedVars File.
That tool could be able to do that...

Would not help unless you could somehow bring eso to flush the saved vars to disk every so often.

Or you can do something like is discussed here - http://www.esoui.com/forums/showthread.php?t=2223

reloading the ui will flush the data. I think Reload("ingame") was the lua command for reloading.