Hello! Can I use api invisioncommunity to get all activity, as in section All Activity?

You can get the 'all activity' stream as an RSS feed for consumption. Click stream options in the top right when you're on that page.

The REST API doesn't have any activity stream abilities at this time. - It does have the ability to search though which could return useful results.

49 minutes ago, Stuart Silvester said:

Вы можете получить поток «все действия» в виде RSS-канала для потребления. Нажмите параметры трансляции в правом верхнем углу, когда вы находитесь на этой странице.

Thanks for the answer! Is it possible to set up an rss chanel for text like this in the xml file?: "Aris posted an article in Articles"

No, RSS doesn't contain enough information for you to do something like that.

Are you looking to embed this in a remote page? - If you are, you may find our 'external blocks' functionality useful

You can create an activity stream block and then embed it remotely into a different page