If you reference to the implementation code for comment counts, it does not seem to work.
so for example if I use:
<div class="gc-counter" data-url="http://example.com/url-with-gc"></div>
But the https://graphcomment.com/api/pub/numberOfComments returns a 400 bad request for pages that do exist at that URL:
On the other hand the API used in a thread at the top to show the count seems to work just fine:
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