Hello, I am certified JIRA administrator, I have many years skills with Atlassian Server and I also JIRA Cloud last year.
I can set up OOB jira settings in JIRA SD as well. I am also jira server developer, I made some addons for JIRA. Lets talk more about your requirements. I need to analyze your needs to choose optimal REST API. Do you use some add-ons (additional apps), for example Insight? What JIRA do you use cloud or server, lets talk about that.
Have a nice day
R.B.