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DocumentationAPIsCloud Load BalancerCLB API 2017Making API RequestsRequest StructureCommon Request Parameters
Common Request Parameters
Last updated: 2025-03-19 14:55:29
Common Request Parameters
Last updated: 2025-03-19 14:55:29
Common parameters are required in every API for authenticating users and the APIs. Unless otherwise required, they will not be described in individual API documents.
Parameter
Type
Description
Required
Action
String
Command API name of a specific operation, such as DescribeInstances.
Yes
Region
String
Identifies the region where the instance you want to operate on resides. Valid values: gz: Guangzhou; sh: Shanghai; bj: Beijing; cd: Chengducq: Chongqing; hk: Hong Kong (China); sg: Singapore; th: Bangkok; kr: Seoul; jp: Tokyo; de: Frankfurt; usw: Silicon Vally; use: Virginia
Yes
Timestamp
UInt
Current Unix timestamp.
Yes
Nonce
UInt
A random positive integer, which is used in conjunction with `Timestamp` to prevent replay attacks.
Yes
SecretId
String
SecretId applied from Tencent Cloud which is used for identification. Each SecretId corresponds to a unique SecretKey, while SecretKey is used to generate request Signature.For more information, see Signature Method.
Yes
Signature
String
Request signature, which is used to verify the validity of the current request. For more information, see Signature Method.
Yes
The format of common request parameters in API request links is shown below. Take Tencent Cloud CVM as an example, suppose you need to query the list of CVM instances, the request link of "Action=DescribeInstance" should be:
https://domain/v2/index.php?Action=DescribeInstances
&SecretId=xxxxxxx
&Region=gz
&Timestamp=1402992826
&Nonce=345122
&Signature=mysignature
&instanceId=101
instanceId is a command parameter, and others are common parameters.
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