We would want to monitor the API used by our users, as in the Rest API can be accessed by users who have access to the site. Is there a way we can monitor who is calling the Jira REST services and on how much data they are consuming on daily basis? How much traffic they are inducing on the system? Please do let me know.
You may already have found the answer to this, but in case not, there is no audit logging for Jira Cloud.
Even the audit logging for Jira Server and Datacenter just records the events of accounts (users) and the method of the event (browser or system), but system actions encompass so much, including any apps that interact with the REST API, that it’s impossible to differentiate which are users accessing the REST API directly.