Sending a notification to a topic

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Yandex Cloud

Updated at July 7, 2026

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Management console

AWS CLI

AWS SDK for Python

In the management console, select the folder containing the topic.
Navigate to Cloud Notification Service.

Select Topics on the left.

Select the topic.
Click Send notification.
Select a notification type:
- Same: To send the same notification to all channel types.
- Different: To enter different texts for different channel types.

Enter the same text for all channels, or different texts for different channel types, in JSON format. If a channel is not specified, the notification will contain the default message text.

Notification format in JSON:

{
  "default": "<Default_text>",
  "sms": "<Notification_text_for_sms>",
  "WEB": "<Notification_text_for_bowser>",
  "APNS": {
    "aps": {
      "alert": {
        "title": "Notification_title",
        "body": "Notification_text"
      }
    }
  },
  "GCM": {
    "notification": {
      "title": "Notification_title",
      "body": "Notification_text"
    }
  },
  "HMS": {
    "notification": {
      "title": "Notification_title",
      "body": "<Notification_text>"
    }
  },
  "RUSTORE": {
    "notification": {
      "title": "Notification_title",
      "body": "<Notification_text>"
    }
  }
}

Click Send.

If you do not have the AWS CLI yet, install and configure it.
Run this command:

To send a notification:
```
aws sns publish \
--topic-arn <topic_ARN> \
--message-structure json \
--message '{"default": "<notification_text>","APNS": {"aps":{"alert":"<notification_text>"}},"GCM": {"notification":{"body":"<notification_text>"}},"HMS": {"notification":{"body":"<notification_text>"}},"RUSTORE": {"notification":{"body":"<notification_text>"}},"WEB": "<notification_text>","sms": "<notification_text>"}'
```
Where:
- topic-arn: Topic ARN.
- message-structure: Message format (json).
- message: Notification text or path to the notification file. To send different notifications depending on channel type, specify the channel and notification text: If some channel is not specified, the default message will be sent.
Learn more about the aws sns publish command in this AWS guide.

If you do not have the AWS SDK for Python (boto3) yet, install and configure it.

To create a push notification channel, use the following code:

try:
    response = client.publish(
        TopicArn="<topic_ARN>",
        Message=json.dumps({
            "default": "<notification_text>",
            "APNS": {"aps":{"alert":"<notification_text>"}},
            "GCM": {"notification":{"body":"<notification_text>"}},
            "HMS": {"notification":{"body":"<notification_text>"}},
            "RUSTORE": {"notification":{"body":"<notification_text>"}},
            "WEB": "<notification_text>",
            "sms": "<notification_text>"
        }),
        MessageStructure="json"
    )
    print(f"Message ID: {response["MessageId"]}")
except botocore.exceptions.ClientError as error:
    print(f"Error: {error}")

Where:

TopicArn: Topic ARN.
Message: Notification text. You can add the same text for all channel types or different texts for each channel type. If a channel is not specified, the notification will contain the default message text.
MessageStructure: Message format (json).

Sending a notification to a topic

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