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Tagging Amazon Cognito resources - Amazon Cognito

A tag is a metadata label that you or AWS assigns to an AWS resource. Each tag consists of a key and a value. For tags that you assign, you define the key and value. For example, you might define the key as stage and the value for one resource as test.

Tags help you do the following:

• Identify and organize your AWS resources. Many AWS services support tagging, so that you can assign the same tag to resources from different services. This helps you indicate which resources are related. For example, you could assign the same tag to an Amazon Cognito user pool that you assign to an Amazon DynamoDB table.

• Track your AWS costs. You can activate these tags on the AWS Billing and Cost Management dashboard. AWS uses cost allocation tags to categorize your costs and deliver a monthly cost allocation report to you. For more information, see Use cost allocation tags in the AWS Billing User Guide.

• Control access to your resources based on the tags that are assigned to them. You can control access by specifying tag keys and values in the conditions for an AWS Identity and Access Management (IAM) policy. For example, you could allow a user to update a user pool only if the user pool has an owner tag with a value of that user's name. For more information, see Controlling access using tags in the IAM User Guide.

You can use the AWS Command Line Interface or the Amazon Cognito API to add, edit, or delete tags for both user and identity pools. You can also manage tags for user pools by using the Amazon Cognito console.

For tips on using tags, see the AWS tagging strategies post on the AWS Answers blog.

The following sections provide more information about tags for Amazon Cognito.

The following resources in Amazon Cognito support tagging:

• User pools

• Identity pools

The following restrictions apply to tags on Amazon Cognito resources:

• Maximum number of tags that you can assign to a resource – 50

• Maximum key length – 128 Unicode characters

• Maximum value length – 256 Unicode characters

• Valid characters for keys and values – a-z, A-Z, 0-9, space, and the following characters: _ . : / = + - @

• Keys and values are case sensitive

• Don't use aws: as a prefix for keys; it's reserved for AWS use

You can use the Amazon Cognito console to manage the tags that are assigned to your user pools.

1. Navigate to the Amazon Cognito console. If prompted, enter your AWS credentials.

2. Choose User Pools.

3. Choose an existing user pool from the list, or create a user pool.

4. Choose the Settings menu and locate the Tags tab.

5. Choose Add tags to add your first tag. If you have previously assigned tags to this user pool, in Manage tags, chose Add another.

6. Specify values for Tag Key and Tag Value.

7. For each additional tag that you want to add, choose Add another.

8. When you are finished adding tags, choose Save changes.

To tag an identity pool, navigate to the Identity pools menu and select or create an identity pool. In the Identity pool properties tab, locate Tags. Choose Add tag.

The AWS CLI provides commands that help you manage the tags that you assign to your Amazon Cognito user pools and identity pools.

Use the following commands to assign tags to your existing user pools and identity pools.

Assign tags to a user pool by using tag-resource within the cognito-idp set of commands:

$ aws cognito-idp tag-resource \
> --resource-arn user-pool-arn \
> --tags Stage=Test

This command includes the following parameters:

• resource-arn – The Amazon Resource Name (ARN) of the user pool that you are applying tags to. To look up the ARN, choose the user pool in the Amazon Cognito console, and view the Pool ARN value on the General settings tab.

• tags – The key-value pairs of the tags, in the format key=value.

To assign multiple tags at once, specify them in a comma-separated list:

$ aws cognito-idp tag-resource \
> --resource-arn user-pool-arn \
> --tags Stage=Test,CostCenter=80432,Owner=SysEng

Assign tags to an identity pool by using tag-resource within the cognito-identity set of commands:

$ aws cognito-identity tag-resource \
> --resource-arn identity-pool-arn \
> --tags Stage=Test

This command includes the following parameters:

• resource-arn – The Amazon Resource Name (ARN) of the identity pool that you are applying tags to. To look up the ARN, choose the identity pool in the Amazon Cognito console, and choose Edit identity pool. Then, at Identity pool ID, choose Show ARN.

• tags – The key-value pairs of the tags, in the format key=value.

To assign multiple tags at once, specify them in a comma-separated list:

$ aws cognito-identity tag-resource \
> --resource-arn identity-pool-arn \
> --tags Stage=Test,CostCenter=80432,Owner=SysEng

Use the following commands to view the tags that you have assigned to your user pools and identity pools.

View the tags that are assigned to a user pool by using list-tags-for-resource within the cognito-idp set of commands:

$ aws cognito-idp list-tags-for-resource --resource-arn user-pool-arn

View the tags that are assigned to an identity pool by using list-tags-for-resource within the cognito-identity set of commands:

$ aws cognito-identity list-tags-for-resource --resource-arn identity-pool-arn

Use the following commands to remove tags from your user pools and identity pools.

Remove tags from a user pool by using untag-resource within the cognito-idp set of commands:

$ aws cognito-idp untag-resource \
> --resource-arn user-pool-arn \
> --tag-keys Stage CostCenter Owner

For the --tag-keys parameter, specify one or more tag keys. Don't include the tag values. Separate keys with spaces.

Remove tags from an identity pool by using untag-resource within the cognito-identity set of commands:

$ aws cognito-identity untag-resource \
> --resource-arn identity-pool-arn \
> --tag-keys Stage CostCenter Owner

For the --tag-keys parameter, specify one or more tag keys. Don't include the tag values.

After you delete a user or identity pool, tags related to the deleted pool can still appear in the console or API calls for up to 30 days after deletion.

Use the following commands to assign tags at the moment you create a user pool or identity pool.

When you create a user pool by using the create-user-pool command, you can specify tags with the --user-pool-tags parameter:

$ aws cognito-idp create-user-pool \
> --pool-name user-pool-name \
> --user-pool-tags Stage=Test,CostCenter=80432,Owner=SysEng

Key-value pairs for tags must be in the format key=value. If you are adding multiple tags, specify them in a comma-separated list.

When you create an identity pool by using the create-identity-pool command, you can specify tags with the --identity-pool-tags parameter:

$ aws cognito-identity create-identity-pool \
> --identity-pool-name identity-pool-name \
> --allow-unauthenticated-identities \
> --identity-pool-tags Stage=Test,CostCenter=80432,Owner=SysEng

Key-value pairs for tags must be in the format key=value. If you are adding multiple tags, specify them in a comma-separated list.

You can use the following actions in the Amazon Cognito API to manage the tags for your user pools and identity pools.

Use the following API actions to assign, view, and remove tags for user pools.

Use the following API actions to assign, view, and remove tags for identity pools.

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