Can Jira pull data exposed from some other API?

[vikram salunke]

I'm using Jira software server.
I need to pull data from external middle-wares / systems. 
I want to know that if there is any interface in JIRA where we can write API call.

Can Jira pull data exposed from some other API? 
Also i want to make automated API calls to pull the data.
Please let me know if there is a way and how.

[Alexey Matveev]

Hello,

You can develop your own Jira plugin the integrate Jira with another system or you can use the built-in functionality, called Webhooks.

Webhooks are REST calls, which are executed on Jira events or post functions. It is a REST call to an external API. You can read more about webhooks here:

https://developer.atlassian.com/server/jira/platform/webhooks/

[Vikram Salunke]

Thank you guys. i will try and let you know for any concern. 

[Jimmy Van (GLiNTECH)]

Check out nFeed

https://marketplace.atlassian.com/apps/23337/nfeed-external-data-in-custom-fields

Will let you grab data from another REST API (and a few other sources)