Here you can test all DummyAPI requests.
Try to start with a simple request for getting generated user data.
To execute request just enter an entity name/request url. And press SUBMIT button. In additional you can also add query params as a string in the end of line. As on example.
You can also go to the DummyAPI Documentation page. There we have a list of available routes, and a link for a fast testing.
We have three presentational views. One for a plain dummy api JSON response. One, for a JSON tree view. And the biggest one for UI Preview. Where you can get a simple idea of each data key representation.