Xray uses JIRA issues for implementing Test, Pre-Condition, Test Set, Test Execution and Test Plan entities. Therefore, these entities may be created or updated using JIRA's native REST API, taking into consideration Xray's custom fields.
The authentication is based on JIRA's REST API authentication, so you can use HTTP basic authentication using some user credentials. It should also be possible to use other authentication methods such as cookie based or OAuth (more info here ).
Xray for JIRA REST API provides additional endpoints specificaly made for dealing with test management, as you may see on the next pages.
Feel free to contribute!
Xray for JIRA is being used and integrated with many different platforms, so if you have the time and know-how, feel free to contribute with an API implementation in your preferred language (e.g. Java, .NET, Javascript, etc).
We'll be glad to include links to your contributions 