AWS::S3::AccessGrant - Amazon CloudFormation
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The AWS::S3::AccessGrant resource creates an access grant that gives a grantee access to your S3 data. The grantee can be an IAM user or role or a directory user, or group. Before you can create a grant, you must have an S3 Access Grants instance in the same Region as the S3 data. You can create an S3 Access Grants instance using the AWS::S3::AccessGrantsInstance. You must also have registered at least one S3 data location in your S3 Access Grants instance using AWS::S3::AccessGrantsLocation.


You must have the s3:CreateAccessGrant permission to use this resource.

Additional Permissions

For any directory identity - sso:DescribeInstance and sso:DescribeApplication

For directory users - identitystore:DescribeUser

For directory groups - identitystore:DescribeGroup


To declare this entity in your Amazon CloudFormation template, use the following syntax:


{ "Type" : "AWS::S3::AccessGrant", "Properties" : { "AccessGrantsLocationConfiguration" : AccessGrantsLocationConfiguration, "AccessGrantsLocationId" : String, "ApplicationArn" : String, "Grantee" : Grantee, "Permission" : String, "S3PrefixType" : String, "Tags" : [ Tag, ... ] } }



The configuration options of the grant location. The grant location is the S3 path to the data to which you are granting access. It contains the S3SubPrefix field. The grant scope is the result of appending the subprefix to the location scope of the registered location.

Required: No

Type: AccessGrantsLocationConfiguration

Update requires: No interruption


The ID of the registered location to which you are granting access. S3 Access Grants assigns this ID when you register the location. S3 Access Grants assigns the ID default to the default location s3:// and assigns an auto-generated ID to other locations that you register.

Required: Yes

Type: String

Update requires: No interruption


The Amazon Resource Name (ARN) of an Amazon IAM Identity Center application associated with your Identity Center instance. If the grant includes an application ARN, the grantee can only access the S3 data through this application.

Required: No

Type: String

Update requires: No interruption


The user, group, or role to which you are granting access. You can grant access to an IAM user or role. If you have added your corporate directory to Amazon IAM Identity Center and associated your Identity Center instance with your S3 Access Grants instance, the grantee can also be a corporate directory user or group.

Required: Yes

Type: Grantee

Update requires: No interruption


The type of access that you are granting to your S3 data, which can be set to one of the following values:

  • READ – Grant read-only access to the S3 data.

  • WRITE – Grant write-only access to the S3 data.

  • READWRITE – Grant both read and write access to the S3 data.

Required: Yes

Type: String

Allowed values: READ | WRITE | READWRITE

Update requires: No interruption


The type of S3SubPrefix. The only possible value is Object. Pass this value if the access grant scope is an object. Do not pass this value if the access grant scope is a bucket or a bucket and a prefix.

Required: No

Type: String

Allowed values: Object

Update requires: Replacement


The Amazon resource tags that you are adding to the access grant. Each tag is a label consisting of a user-defined key and value. Tags can help you manage, identify, organize, search for, and filter resources.

Required: No

Type: Array of Tag

Update requires: Replacement

Return values


When you pass the logical ID of this resource to the intrinsic Ref function, Ref returns some information about your access grant.

For more information about using the Ref function, see Ref.


The Fn::GetAtt intrinsic function returns a value for a specified attribute of this type. The following are the available attributes and sample return values.

For more information about using the Fn::GetAtt intrinsic function, see Fn::GetAtt.


The ARN of the access grant.


The ID of the access grant. S3 Access Grants auto-generates this ID when you create the access grant.


The S3 path of the data to which you are granting access. It is the result of appending the Subprefix to the location scope.