OAbot could be used to add free to read links on Wikidata items representing publications. Due to the nature of Wikidata we could simply rephrase that as "import BASE in Wikidata" (for the items that are already there).
|Open||None||T194813 Find ways to integrate/improve OABot with WikiCite efforts|
|Open||None||T164152 Integrate with Wikidata|
I note you say identifiers, not URLs. I agree with that: there's probably little use at this point in integrating the Unpaywall database into Wikidata, especially as it's evolving quickly. But we have millions of identifier-based links which are very stable, like PMC. I'm pretty sure I saw people like @Harej and @Daniel_Mietchen adding a lot of them with quickstatements, for instance: https://tools.wmflabs.org/quickstatements/#/batch/5018 https://tools.wmflabs.org/quickstatements/#/batch/5017
@Daniel_Mietchen regarding https://twitter.com/EvoMRI/status/1055785761574813696 (I do not read Twitter notifications - but happily interact on open platforms such as Mastodon):
"integrating OAbot with Wikidata" just amounts to importing BASE / Unpaywall / Dissemin in Wikidata - no need for an interactive tool like OAbot for that.
If you need help to carry out that sort of import, let me know! I will not do it but I am interested in helping others get the tools and skills to do it themselves.
User:Sic19 has been importing full text URLs from institutional repositories with OpenRefine (such as https://tools.wmflabs.org/editgroups/b/OR/bf07dab/).
During our Wikicite session at Wiki TechStorm 2018 in The Hague, @valhallasw imported arXiv ids from Unpaywall, with QuickStatements. I am sure they would be happy to share their workflows with you!
See T208118 / https://www.wikidata.org/wiki/Wikidata:Dataset_Imports/Unpaywall for details of what I'm working on. Currently my focus is on importing arXiv identifiers, but extending this to add links to institutional repositories (which has the benefit of more often being the actual published version) is a natural extension.
If you're interested on picking up parts of this, that would be great. I don't have a lot of time to spend on this, so it's going to be slow steps from my side.