Postman is software that you can use to test APIs. See: https://www.getpostman.com/ (External Link).
You can import the DAP web services endpoints into a Postman collection using the following address:
Note: at the time of writing the Authorization settings will default to Basic Auth. Public use of /ws/v2 endpoints should not require authentication. CSIRO staff who with so use authentication may wish to read the /ws/v2 authentication guide and edit the Postman collection accordingly.
Tested using Postman v7.2.2.