Docs Overview/
Chat/
Server APIs/
Webhooks/
Group Webhooks/
Before a Group Is Created/

Before a Group Is Created

Overview

This webhook event is used by the app backend to check users' group creation requests in real time. The app backend can also reject the requests.

Notes

To enable this webhook, you must configure a webhook URL and toggle on the corresponding protocol. For more information on the configuration method, see Webhook Configuration.
During this webhook event, the Chat backend initiates an HTTP POST request to the app backend.
After receiving the webhook request, the app backend must check whether the SDKAppID contained in the request URL is the SDKAppID of the app.
For more security considerations, see the Security Considerations section in Webhook Overview.

Webhook Triggering Scenarios

The app user creates a group on the client.
The app admin creates a group through the RESTful API.

Webhook Triggering Timing

It will be triggered before the Chat backend creates a group.

API Calling Description

Sample request URL

In the following sample, the webhook URL configured in the app is https://www.example.com. Example:
https://www.example.com?SdkAppid=$SDKAppID&CallbackCommand=$CallbackCommand&contenttype=json&ClientIP=$ClientIP&OptPlatform=$OptPlatform

Request parameters

Parameter
Description
https
The request protocol is HTTPS, and the request method is POST.
www.example.com
Webhook URL
SdkAppid
The SDKAppID assigned by the Chat console when the app is created
CallbackCommand
Fixed value: Group.CallbackBeforeCreateGroup.
contenttype
Fixed value: JSON.
ClientIP
Client IP, such as 127.0.0.1
OptPlatform
Client platform. For valid values, see the description of OptPlatform in the Webhook Protocols section of Webhook Overview.

Sample request

{
    "CallbackCommand": "Group.CallbackBeforeCreateGroup", // Webhook command
    "Operator_Account": "leckie", // Operator
    "Owner_Account": "leckie", // Group owner
    "Type": "Public", // Group type
    "Name": "MyFirstGroup", // Group name
    "CreateGroupNum": 123, // Number of groups of the same type that the user has created
    "MemberList": [ // List of initial members
        {
            "Member_Account": "bob"
        },
        {
            "Member_Account": "peter"
        }
    ],
    "EventTime":"1670574414123"// Event trigger timestamp in milliseconds
}

Request fields

Object
Type
Description
CallbackCommand
String
Webhook command
Operator_Account
String
UserID of the operator who initiates the group creation request
Owner_Account
String
UserID of the owner of the group requested to be created
Type
String
Type of the group that generates group messages, such as Public. For details, see Group Types section in Group System.
Name
String
Name of the group requested to be created
CreateGroupNum
Integer
Number of groups of the same type that the user has created
MemberList
Array
List of initial members of the group requested to be created
EventTime
Integer
Event trigger timestamp in milliseconds

Sample response

Creation allowed

The user is allowed to create a group.
{
    "ActionStatus": "OK",
    "ErrorInfo": "",
    "ErrorCode": 0 // Creation allowed
}

Creation disallowed

The user is not allowed to create a group. No group will be created, and the error code 10016 will be returned to the caller.
{
    "ActionStatus": "OK",
    "ErrorInfo": "",
    "ErrorCode": 1 // Creation refused
}

Response fields

Field
Type
Required
Description
ActionStatus
String
Yes
Request result. OK: Successful; FAIL: Failed
ErrorCode
Integer
Yes
Error code returned. 0: Allows group creation; 1: Forbids group creation. If the business side wants to use a custom error code to forbid a user to create a group and send ErrorCode and ErrorInfo to the client, ensure that the value of ErrorCode is set within the range of [10100, 10200].
ErrorInfo
String
Yes
Error information

References

Webhook Overview
RESTful API: Creating a Group