Did you find a solution
Several solutions have been given, mainly use the API
If you all are afraid of using API calls from website to HA then you could do it the other way also.
Have HA send values using GET as a rest sensor.
On the page you just save the values received.
@jasperowaale nope, have given up on that since a long time as none easy and safe solution 
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That’s not even remotely a “solution”. You don’t even bother to post a link to the API documentation.
And I guess you didn’t bother to search for it?
You literally wrote two out of the four words needed for a Google search.
If you just add Home Assistant then that is your search query.
All integrations are found here: Integrations - Home Assistant (API)
Lord
As I said… not even remotely a solution. Sure, I can find the API documentation. I’m still not finding a way to do this. We want unauthenticated people to have some access to some data. And it looks like the best way is to not use HASS (ie, to pull it out of another database).
Home Assistant is not built for this purpose… it’s like complaining that using your ferrari to plow snow is too difficult.
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But you have not either explained what you are looking for.
You just came here to complain that the link was missing.
So how are we supposed to know what you want?
The solution, yes solution I posted one moth ago works very fine.
It is actually how the “banner” below works.
HA sends what version I’m on to my webpage and the webpage cache the data.
When someone visits a page here on the forum there is a image link to my webpage and it displays the data when requested.