Jitbit Helpdesk comes with both "inbound" and "outbound" APIs. The "inbound" API is a traditional RESTful web-service used to create support tickets, add replies to existing tickets, assign, close tickets etc. The "outbound" API - is Jitbit Helpdesk calling external apps when something happens inside the Helpdesk system. For example, when a new support ticket is created. This is called "API hooks".
You can set the help desk system to send an http-request to your own in-house app. Or post items to an RSS feed or a Facebook page when a new ticket is created - nearly everything is possible. You just have to know the API on the receiving end.
To set up a hook you have to navigate to "Admin - Automation rules" and create a "rule" that will trigger an HTTP request to some external app. For example:
In order to help you get started, we have published a detailed manual on how to set up HipChat integration that you can use as a great example of "outbound" integration (see the bottom of the page, "Advanced integration").
For testing and debugging the receiving app's http-API we recommend using a great Chrome-application called Postman. After making sure the "http-post" (or "get") request works fine in Postman you can copy all the settings into your Helpdesk automation rule and enjoy the integration.