Calling

The following figure shows the process of calling an API.

1. Obtain an AK/SK for authentication.

   Request authentication is required for calling an API. After successful authentication, the authentication field is filled into the next method to request for message construction.

   AK/SK authentication is used for calling APIs.

   AK/SK authentication: Requests are encrypted using AK/SK pairs.

   When you send requests to underlying services through API Gateway (APIG), the requests must be signed using access key ID (AK) and secret access key (SK).

   • AK: access key ID, which is a unique identifier used with a secret access key to sign requests cryptographically.
   • SK: secret access key. It is used together with an access key ID to identify a sender who initiates a request and to cryptographically sign requests, preventing the request from being modified.
     

     • For details about how to obtain SDKs, see Calling APIs Through App Authentication.
     • You can obtain an AK/SK on the Access Keys page.
2. Construct a request.

   Configure the request parameters to construct a request.

3. Initiate the request.
4. Parse a response.