Any listing can have only 1 exported calendar, composed by Guesty.
You can use the following request to retrieve an active exported-calendar for a specified listing.
Please, note, the response body will contain either an empty list, or a list with a single item - the exported calendar itself.
You can use this endpoint to get currently active exported calendar, if you do not have its id.
Click Try It! to start a request and see the response here!