This authorization mechanism is different from Oauth API authorization, which is equivalent to obtaining authorization on a webpage. In theory, it can have the ability of a webpage version, but developers need to refer to the HTTP requests on the webpage themselves!
Go to client page: https://www.febbox.com/open/client Create a client and obtain the client ID redirect URIs : After allowing login, the webpage will redirect to this URL and the login credentials will be passed through GET method
Put the obtained auth_token into the cookie, with the key being UI, and you can use some APIs on the webpageExp: curl 'https://www.febbox.com/xxxxx' -H 'cookie: ui=[auth_token]'