The base URL for API on Server calls is:
http(s)://SERVER[:PORT]/[CONTEXT]/rest/rtm/1.0/api
In order to make REST requests to Jira Server, use basic authentication described on Atlassian’s website.
In Postman choose Basic Authentication and login with Username and Password. It can be a dedicated user with proper permissions, created in Jira especially for REST API purposes:
If you can’t find the answer you need in our documentation, raise a support request*.
*Include as much information as possible to help our support team resolve your issue faster.
Apps documentation