Researchgate and Academia.edu don't provide any sort of structured metadata, so any sort of high-quality import from there is unlikely. Semantic scholar, they mostly just provide the PDF, which you should be able to import to Zotero using the browser button and have metadata retrieved automatically.
But so there is no way to save lists from here to Zotero (as opposed to one-by-one)? The yellow folder icon does show up, but nothing seems to happen then.
I looked at Semantic Scholar: On the positive side, it has an API that's very straightforward. However, the API does not include volume and page numbers. Those are included in the BibTeX/Endnote output, but getting those is rather involved, at least on initial assessment.
Well Sebastian, this does look like an extremely interesting site for people who want the full texts. And the metadata can presumably still be retrieved by other means like through the DOIs, which presumably could be retrieved by the new DOI plugin, no?
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On the positive side, it has an API that's very straightforward. However, the API does not include volume and page numbers.
Those are included in the BibTeX/Endnote output, but getting those is rather involved, at least on initial assessment.