I’m the current maintainer of the R client for DataCite APIs - GitHub - ropensci/rdatacite: Wrapper to DataCite metadata - It’s an rOpenSci package.
I can no longer maintain the client, so am seeking a new maintainer. Even if you only know a little bit of R this might be a good opportunity.
I’m willing to help a little bit in the transition (including a brief call to get your oriented), but can’t help moving forward.
Happy to answer any questions here or you can DM me at https://twitter.com/sckottie