The SMC API is an RPC-based API and can be called using the GET and POST methods. This topic describes how to call the SMC API. Every request made to the SMC API must be signed and authenticated.

API calling tools

You can use developer tools such as OpenAPI Explorer, Alibaba Cloud CLI, Cloud Shell, and SDKs to debug and call Alibaba Cloud APIs.
  • OpenAPI Explorer

    OpenAPI Explorer is a Web-based, visual API calling tool. The URL of the OpenAPI Explorer is You can call Alibaba Cloud APIs and view the API request structure and response in the OpenAPI Explorer. For more information, see Alibaba Cloud OpenAPI Explorer User Guide.

  • Alibaba Cloud CLI

    Alibaba Cloud CLI is an open source tool built on Alibaba Cloud Go SDK. You can use Alibaba Cloud CLI to manage your Alibaba Cloud resources.

    For more information, see Alibaba Cloud CLI User Guide.

  • Cloud Shell

    Cloud Shell is a Web-based command line tool. You can use Cloud Shell from any browser to run cloud commands and manage Alibaba Cloud resources.

    For more information, see Alibaba Cloud Cloud Shell User Guide.


    You can obtain SMC SDKs from Github Repo Alibaba Cloud.

Request structure

This section describes the structure of an API request made over HTTP or HTTPS. The URL format of a GET request is as follows:
http(s)://Endpoint/? Action=xx&Parameters
  • Endpoint: the cloud service access point. Example:
  • Action: the operation to be performed for the current request. For example, you can create a migration task by specifying this value as CreateReplicationJob.
  • Parameters: the request parameters, consisting of both common and API-specific request parameters. Separate each parameter with an ampersand (&).
The following example shows how to call the CreateReplicationJob operation:
& Common request parameters


The endpoint of the SMC API is

Common parameters

The following table describes common request parameters used when you send GET requests through the URL to call the SMC API.
Parameter Type Required Example Description
Action String Yes CreateReplicationJob The operation that you want to perform. For more information about the parameter values, see List of operations by function.
AccessKeyId String Yes LTAIp4********fjx The AccessKey ID. For more information, see Create an AccessKey.
Signature String Yes OLeaidS1JvxuMvnyHOwuJ%2BuX5qY%3D Your signature. For more information about RPC-based API signatures, see Digital signature.
SignatureMethod String Yes HMAC-SHA1 The signature method. Set the value to HMAC-SHA1.
SignatureVersion String Yes 1.0 The version of the signature algorithm. Set the value to 1.0.
SignatureNonce String Yes 3ee8c1b8-****-44af-****-4e0ad82fd6cf A unique random number that is used to prevent network replay attacks. Different random numbers must be used for different requests.
Timestamp String Yes 2018-01-01T12:00:00Z The timestamp of the request. Specify the time in the ISO 8601 standard in the yyyy-MM-ddTHH:mm:ssZ format. The time must be in UTC.
Version String Yes 2014-08-28 The API version to use. The value must be in the YYYY-MM-DD format. Set the value to 2019-06-01.
Format String No json The output format of the response. Valid values: json and xml.

Default value: json

RAM authentication

The following table describes the authentication rules for some API operations. For more information about the Alibaba Cloud Resource Name (ARN) formats of SMC API resources, see RAM terms.
Action ARN value
DeleteSourceServer acs:smc:$regionid:$accountid:sourceServer/$sourceId
DescribeSourceServers acs:smc:$regionid:$accountid:sourceServer/*
ModifySourceServerAttribute acs:smc:$regionid:$accountid:sourceServer/$sourceId
  • acs:smc:$regionid:$accountid:sourceServer/$sourceId
  • acs:smc:$regionid:$accountid:replicationJob/*
DeleteReplicationJob acs:smc:$regionid:$accountid:replicationJob/$jobId
DescribeReplicationJobs acs:smc:$regionid:$accountid:replicationJob/*
ModifyReplicationJobAttribute acs:smc:$regionid:$accountid:replicationJob/$jobId
StartReplicationJob acs:smc:$regionid:$accountid:replicationJob/$jobId
StopReplicationJob acs:smc:$regionid:$accountid:replicationJob/$jobId