difference between atlassian jira rest client and jira rest api ?

[Tarun Kumar]

Can anyone clarify this?

[Nic Brough -Adaptavist-]

They're totally different things.  This comparison would be like asking what the difference between tea and a teapot.

The REST API is an interface that allows software to talk to Jira.

The JRJC is software that talks to Jira over the REST interface.

[Moustapha Toure]

Hi Nic Borough,

So if I want to use the rest api in my project it’s necessary that a include the both in my build file. 

[Nic Brough -Adaptavist-]

No.  You don't need either of them included. 

To use the REST API, make valid REST calls to Jira.  JRJC is supposed to be a helper library to make understanding what you get back easier.  For a lot of people it does.  But you don't need it if you are willing to spend the time understanding the REST API Jira has.