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Features & Server APIs
  • On-Cloud Recording
  • Relay to CDN
  • RTMP Streaming with TRTC
  • Event Callbacks
    • Event Callbacks
    • Relay to CDN Callback
    • Verify Signature Example
  • Sending and Receiving Messages
  • Access Management
    • Overview
    • Manageable Resources and Actions
    • Preset Policies
    • Custom Policies
  • Enabling Advanced Permission Control
  • How to push stream to TRTC room with OBS WHIP
  • Server APIs
    • API Category
    • History
    • Making API Request
      • Request Structure
      • Common Params
      • Signature v3
      • Signature
      • Responses
    • Room Management APIs
      • SetUserBlockedByStrRoomId
      • SetUserBlocked
      • RemoveUser
      • DismissRoom
      • RemoveUserByStrRoomId
      • DismissRoomByStrRoomId
    • Call Quality Monitoring APIs
      • DescribeRoomInfo
      • DescribeUserEvent
      • DescribeCallDetailInfo
      • DescribeUserInfo
      • DescribeScaleInfo
    • Pull Stream Relay Related Interface
      • StartStreamIngest
      • StopStreamIngest
      • DescribeStreamIngest
    • On-cloud Recording APIs
      • CreateCloudRecording
      • DescribeCloudRecording
      • ModifyCloudRecording
      • DeleteCloudRecording
    • Stream Mixing and Relay APIs
      • UpdatePublishCdnStream
      • StartPublishCdnStream
      • StopPublishCdnStream
    • Usage Statistics APIs
      • DescribeTrtcUsage
      • DescribeRecordingUsage
      • DescribeMixTranscodingUsage
      • DescribeRelayUsage
      • DescribeTrtcRoomUsage
    • Data Types
    • Error Codes
    • Appendix
      • Event ID Mapping Table
Features & Server APIs


1. API Description

Domain name for API request:

This API (the old DescribeHistoryScale) is used to query the daily number of rooms and users of an application (SDKAppID) in the last 14 days. Data for the current day cannot be queried.

A maximum of 20 requests can be initiated per second for this API.

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API Explorer provides a range of capabilities, including online call, signature authentication, SDK code generation, and API quick search. It enables you to view the request, response, and auto-generated examples.

2. Input Parameters

The following request parameter list only provides API request parameters and some common parameters. For the complete common parameter list, see Common Request Parameters.

Parameter NameRequiredTypeDescription
ActionYesStringCommon Params. The value used for this API: DescribeScaleInfo.
VersionYesStringCommon Params. The value used for this API: 2019-07-22.
RegionYesStringCommon Params. For more information, please see the list of regions supported by the product. This API only supports: ap-beijing, ap-guangzhou, ap-mumbai, ap-singapore, na-toronto.
SdkAppIdYesIntegerThe application ID, such as 1400xxxxxx.
StartTimeYesIntegerThe start time, which is a Unix timestamp (seconds) in local time, such as 1590065777.
Note: Only data in the last 14 days can be queried.
EndTimeYesIntegerThe end time, which is a Unix timestamp (seconds) in local time, such as 1590065877. The end time and start time should preferably be more than 24 hours apart.
Note: Data is collected on a daily basis. To query the data of a day, make sure the end time is later than 00:00 on that day. Otherwise, no data will be returned. For example, to query the data on the 20th, the end time must be later than 00:00 on the 20th.

3. Output Parameters

Parameter NameTypeDescription
TotalIntegerThe number of records returned.
ScaleListArray of ScaleInfomationThe returned data.
Note: This field may return null, indicating that no valid values can be obtained.
RequestIdStringThe unique request ID, generated by the server, will be returned for every request (if the request fails to reach the server for other reasons, the request will not obtain a RequestId). RequestId is required for locating a problem.

4. Example

Example1 Querying the number of rooms and users

This example shows you how to query the number of rooms and users.

Input Example

Content-Type: application/json
X-TC-Action: DescribeScaleInfo
<Common request parameters>

    "StartTime": 1590065777,
    "SdkAppId": 1400353843,
    "EndTime": 1590065877

Output Example

    "Response": {
        "Total": 4,
        "ScaleList": [
                "Time": 1587830400,
                "RoomNumbers": 130644,
                "UserNumber": 2111978,
                "UserCount": 7004243
                "Time": 1587744000,
                "RoomNumbers": 79241,
                "UserNumber": 781494,
                "UserCount": 2968232
                "Time": 1587657600,
                "RoomNumbers": 180341,
                "UserNumber": 3047931,
                "UserCount": 10839565
                "Time": 1587571200,
                "RoomNumbers": 185469,
                "UserNumber": 3267726,
                "UserCount": 11656700
        "RequestId": "70259dd1-c935-4a31-8576-f4daadd942ef"

5. Developer Resources


TencentCloud API 3.0 integrates SDKs that support various programming languages to make it easier for you to call APIs.

Command Line Interface

6. Error Code

The following only lists the error codes related to the API business logic. For other error codes, see Common Error Codes.

Error CodeDescription
InternalErrorInternal error.
InternalError.DBErrorAn error occurred while querying the database.
InternalError.HttpParaseFaliedFailed to parse the HTTP request.
InternalError.InterfaceErrAPI error.
InternalError.MethodErrUnsupported method.
InvalidParameter.BodyParamsErrorFailed to parse body parameters.
InvalidParameter.EndTsInvalid EndTs.
InvalidParameter.SdkAppIdSdkAppId is incorrect.
InvalidParameter.SdkAppidInoperable SdkAppid.
InvalidParameter.StartTsInvalid StartTs.
InvalidParameter.StartTsOversizeThe start time for query exceeded the limit.
InvalidParameter.UserIdsMorethanSixThe number of users exceeds 6.
MissingParameter.EndTsendTS_s is missing.
MissingParameter.SdkAppIdSdkAppId is missing.
MissingParameter.StartTsstartTS_s is missing.