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词汇表

Common Request Parameters

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最后更新时间： 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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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

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负载均衡

Common Request Parameters

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