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Web Application Firewall:DescribeVisitUas

Last Updated:Sep 08, 2025

Queries the top 10 User-Agents that sent the most requests.

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RAM authorization

The table below describes the authorization required to call this API. You can define it in a Resource Access Management (RAM) policy. The table's columns are detailed below:

  • Action: The actions can be used in the Action element of RAM permission policy statements to grant permissions to perform the operation.

  • API: The API that you can call to perform the action.

  • Access level: The predefined level of access granted for each API. Valid values: create, list, get, update, and delete.

  • Resource type: The type of the resource that supports authorization to perform the action. It indicates if the action supports resource-level permission. The specified resource must be compatible with the action. Otherwise, the policy will be ineffective.

    • For APIs with resource-level permissions, required resource types are marked with an asterisk (*). Specify the corresponding Alibaba Cloud Resource Name (ARN) in the Resource element of the policy.

    • For APIs without resource-level permissions, it is shown as All Resources. Use an asterisk (*) in the Resource element of the policy.

  • Condition key: The condition keys defined by the service. The key allows for granular control, applying to either actions alone or actions associated with specific resources. In addition to service-specific condition keys, Alibaba Cloud provides a set of common condition keys applicable across all RAM-supported services.

  • Dependent action: The dependent actions required to run the action. To complete the action, the RAM user or the RAM role must have the permissions to perform all dependent actions.

Action

Access level

Resource type

Condition key

Dependent action

yundun-waf:DescribeVisitUas

get

*All Resource

*

None None

Request parameters

Parameter

Type

Required

Description

Example

StartTimestamp

string

Yes

The beginning of the time range to query. This value is a UNIX timestamp. Unit: seconds.

1665331200

EndTimestamp

string

No

The end of the time range to query. This value is a UNIX timestamp. Unit: seconds. If you do not specify this parameter, the current time is used as the end time.

1665386280

Resource

string

No

The protected object.

www.aliyundoc.com

InstanceId

string

Yes

The ID of the WAF instance.

Note

Call DescribeInstance to query the ID of the WAF instance.

waf_cdnsdf3****

RegionId

string

No

The region where the WAF instance resides. Valid values:

  • cn-hangzhou: the Chinese mainland.

  • ap-southeast-1: outside the Chinese mainland.

cn-hangzhou

ResourceManagerResourceGroupId

string

No

The ID of the resource group.

rg-acfm***q

Response elements

Element

Type

Description

Example

object

The result of the request.

RequestId

string

The ID of the request.

2847CE98-AFAE-5A64-B80E-60461717F9DE

Uas

array<object>

The top 10 User-Agents.

object

The statistics of a User-Agent.

Count

integer

The total number of requests from the User-Agent.

698455

Ua

string

The User-Agent.

chrome

Examples

Success response

JSON format

{
  "RequestId": "2847CE98-AFAE-5A64-B80E-60461717F9DE",
  "Uas": [
    {
      "Count": 698455,
      "Ua": "chrome"
    }
  ]
}

Error codes

See Error Codes for a complete list.

Release notes

See Release Notes for a complete list.