Use TagResource with an Amazon SDK or command line tool

To add a tag to a topic

The following tag-resource example adds a metadata tag to the specified Amazon SNS topic.

aws sns tag-resource \
    --resource-arn arn:aws:sns:us-west-2:123456789012:MyTopic \
    --tags Key=Team,Value=Alpha

This command produces no output.

import software.amazon.awssdk.regions.Region;
import software.amazon.awssdk.services.sns.SnsClient;
import software.amazon.awssdk.services.sns.model.SnsException;
import software.amazon.awssdk.services.sns.model.Tag;
import software.amazon.awssdk.services.sns.model.TagResourceRequest;
import java.util.ArrayList;
import java.util.List;

/**
 * Before running this Java V2 code example, set up your development
 * environment, including your credentials.
 *
 * For more information, see the following documentation topic:
 *
 * https://docs.aws.amazon.com/sdk-for-java/latest/developer-guide/get-started.html
 */
public class AddTags {
    public static void main(String[] args) {
        final String usage = """

                Usage:    <topicArn>

                Where:
                   topicArn - The ARN of the topic to which tags are added.

                """;

        if (args.length != 1) {
            System.out.println(usage);
            System.exit(1);
        }

        String topicArn = args[0];
        SnsClient snsClient = SnsClient.builder()
                .region(Region.US_EAST_1)
                .build();

        addTopicTags(snsClient, topicArn);
        snsClient.close();
    }

    public static void addTopicTags(SnsClient snsClient, String topicArn) {
        try {
            Tag tag = Tag.builder()
                    .key("Team")
                    .value("Development")
                    .build();

            Tag tag2 = Tag.builder()
                    .key("Environment")
                    .value("Gamma")
                    .build();

            List<Tag> tagList = new ArrayList<>();
            tagList.add(tag);
            tagList.add(tag2);

            TagResourceRequest tagResourceRequest = TagResourceRequest.builder()
                    .resourceArn(topicArn)
                    .tags(tagList)
                    .build();

            snsClient.tagResource(tagResourceRequest);
            System.out.println("Tags have been added to " + topicArn);

        } catch (SnsException e) {
            System.err.println(e.awsErrorDetails().errorMessage());
            System.exit(1);
        }
    }
}

suspend fun addTopicTags(topicArn: String) {

    val tag = Tag {
        key = "Team"
        value = "Development"
    }

    val tag2 = Tag {
        key = "Environment"
        value = "Gamma"
    }

    val tagList = mutableListOf<Tag>()
    tagList.add(tag)
    tagList.add(tag2)

    val request = TagResourceRequest {
        resourceArn = topicArn
        tags = tagList
    }

    SnsClient { region = "us-east-1" }.use { snsClient ->
        snsClient.tagResource(request)
        println("Tags have been added to $topicArn")
    }
}