CloudWatch / Client / tag_resource



Assigns one or more tags (key-value pairs) to the specified CloudWatch resource. Currently, the only CloudWatch resources that can be tagged are alarms and Contributor Insights rules.

Tags can help you organize and categorize your resources. You can also use them to scope user permissions by granting a user permission to access or change only resources with certain tag values.

Tags don’t have any semantic meaning to Amazon Web Services and are interpreted strictly as strings of characters.

You can use the TagResource action with an alarm that already has tags. If you specify a new tag key for the alarm, this tag is appended to the list of tags associated with the alarm. If you specify a tag key that is already associated with the alarm, the new tag value that you specify replaces the previous value for that tag.

You can associate as many as 50 tags with a CloudWatch resource.

See also: AWS API Documentation

Request Syntax

response = client.tag_resource(
            'Key': 'string',
            'Value': 'string'
  • ResourceARN (string) –


    The ARN of the CloudWatch resource that you’re adding tags to.

    The ARN format of an alarm is arn:aws:cloudwatch:Region:account-id:alarm:alarm-name

    The ARN format of a Contributor Insights rule is arn:aws:cloudwatch:Region:account-id:insight-rule/insight-rule-name

    For more information about ARN format, see Resource Types Defined by Amazon CloudWatch in the Amazon Web Services General Reference.

  • Tags (list) –


    The list of key-value pairs to associate with the alarm.

    • (dict) –

      A key-value pair associated with a CloudWatch resource.

      • Key (string) – [REQUIRED]

        A string that you can use to assign a value. The combination of tag keys and values can help you organize and categorize your resources.

      • Value (string) – [REQUIRED]

        The value for the specified tag key.

Return type:



Response Syntax


Response Structure

  • (dict) –


  • CloudWatch.Client.exceptions.InvalidParameterValueException

  • CloudWatch.Client.exceptions.ResourceNotFoundException

  • CloudWatch.Client.exceptions.ConcurrentModificationException

  • CloudWatch.Client.exceptions.InternalServiceFault