List of all cities: https://zapi.zagster.com/api/v1/bikeshares/
For more information about bikes in a specific city, you'll need the city ID (found in metadata["data"]["_id"] from the above link)
List of stations in a city and station metadata: https://zapi.zagster.com/api/v1/bikeshares/[City ID]/stations
List of bikes in a city and bike metadata: https://zapi.zagster.com/api/v1/bikeshares/[City ID]/bikes