Ok here is a trick to create your own custom alexa skill.
No need to use amazon, and simple…ish.
create a phrase with amazon blue print Custom Q&A This will be your alexa skill phrase
Eg
Question - alexa what are the temperatures
Answer - ok
(ok in breif mode is a success beep)
goto to your skill and enable the skill.
Now using node-red and the alexa remote2 node, you can listen for the phrases you set.
In node-red you can connect to multiple platforms and build your own backend. so it simple to then query vera or other platforms, grab the temps and have node-red or vera announce the answers on the alexa you said the phrase to.
https://nodered.org/