https://fewsdocs.deltares.nl/admininterface/api/v1/html5/api-guide.html
"Since" tags indicate the version of new features.
This menu item contains the link to the main page of the Delft-FEWS Admin Interface (2018.02 and later) User Guide
This menu item contains the link to the main page of the REWS API Documentation of the Delft-FEWS Admin Interface. This page is included in the Delft-FEWS Admin Interface package and will be available within each AI.
For an example on how to use the API from a Windows Powershell script, please see: Admin Interface REST API Powershell example