Backend API Replaced With REST API
The Backend API is now deprecated. A new REST API was introduced in Nagios XI 5. The REST API allows you to read, write, delete, and update data in the Nagios XI system through commands that are authenticated via Nagios XI API keys.
To view the REST API documentation in Nagios XI navigate to Help > API
Docs. The following document is a great starting point:
For any support related questions please visit the Nagios Support Forums at:
http://support.nagios.com/forum/
Article ID: 176
Created On: Wed, Jan 27, 2016 at 6:28 PM
Last Updated On: Mon, Jan 12, 2026 at 12:49 PM
Authored by: tlea
Online URL: https://support.nagios.com/kb/article/nagios-xi-backend-api-deprecated-176.html