I recently worked on automating bulk document create process using Excel, Curl and Jive REST, this way helped me not to create a plugin for this.
One interesting observation was, I did not need to pass X-J-Token attribute for POST service with CURL. I am yet to explore, and thought to post here if already someone have done some analysis. Please let me know.
echo ---->>log.out echo creating document for row2 >> log.out