Developer Open API

① Developer API
    Providing a stable and secure service interface 
    lets you care about implementing only a small amount of code 
② DevelopmentAPI 
     It is different from the Developer API in that it has more functions and power than the Developer API. 
     On the contrary, 
     in order to obtain such power, 
     it is not very stable
     
     
    ★Note that there: 
                       The Developer API is a stable version that you can use for exploration without pursuing more features.
                       The DevelopmentAPI is in the development version and is more buggy and volatile than the developer API
                       We hope you can join our team to build a better API.
                       Thank you very much for choosing us