This article guides you through the process of calling the API services published by other providers. You need to complete the following steps in order:
Three basic conditions are required to call an API：
- API: The API you are going to call, you need to obtain detailed parameter definitions.
- App: The app is your identity when calling the API. AppKey and AppSecret are used for authentication.
- Permission between API and app: The app should be authorized to call the API. This permission can be set up through the authorization function.
The following articles provide the details about how to meet the three conditions and show a Demo of calling an API.