Hi,

Currently there’s no option to list all countries, because the query parameter is required – although the docs in the API say it isn’t but that’s because I can’t get to modify the settings of the API.

Anyway, what you can do is get a list of countries elsewhere, and then put those in your first dropdown. Then, when the user selects a country, just use it as the query param for this API and set the searchby param to “country”. This will get you a list of all cities in the selected country, then you can just grab all unique cities and show them in a second dropdown.

Hope that helps.