I can see the search engine, but I can only enter the date. Can I search for posts or display them in json format e.g. only from the last hour, 5 hours etc?
Yes you can, but only for days, using the advanced search page /search or by using the
before search operators:
You can then sort by latest posts to see the ones from the last hour or so.
Half very much / anyway can i limit the number of results only to the first 10 instead of 50 ?