Set Bucket ACLs

To set or modify the ACLs on an existing bucket you make a PUT request that is scoped to the bucket and you use the acl query string parameter. You must include an XML document in the request body that contains the ACL settings you want to apply. Notice that you cannot set the ACLs on a new bucket you are creating. (When you create a new bucket, the default ACL (project- private) is automatically applied to the bucket.)

You must have FULL_CONTROL permission to apply ACLs to an existing bucket. Also, you must be authenticated to use the PUT Bucket method. Anonymous bucket creation requests will fail.

Query string parameters

Parameter Description Required
acl You use this to change ACLs on an existing bucket. You must provide the ACL XML document in the request body. No

Request headers

See common request headers.

Request body elements

Notes: To see how these elements are nested, see the ACL syntax.

The following request body elements are applicable only if you use the acl query string parameter to apply ACLs to an existing bucket.

Element Description
Owner Container for bucket owner information.
ID The Google Storage ID of the bucket owner or the Google Storage ID of the user or group for whom the ACLs are being applied.
Name Comment field for GroupByEmail, GroupById, UserByEmail, and UserById. If you do not specify anything in Name when you apply an ACL, the Cloud Storage system populates this field with the email address you specified in EmailAddress.
AccessControlList Container for the ACLs you are applying.
Entries Container for the ACL entries you are applying.
Entry The ACL entry you are applying.
Scope The scope to which the ACLs apply.
Permission The permission you are granting. Can be any of the Cloud Storage permissions, including READ, WRITE, or FULL_CONTROL
EmailAddress A Google account email address or a Google group email address.
Domain A Google Apps domain.

Request syntax

PUT /?acl HTTP/1.1
Host: <bucket>
Date: <date and time of the request>
Content-Length: <request body length>
Content-Type: <MIME type of the body>
Authorization: <authentication string>
x-goog-project-id: <project id>


Response headers

The request can return a variety of response headers depending on the request headers you use.

Response body elements

The response does not include an XML document in the response body.


The following sample applies ACLs to a bucket named acme-pets. The ACLs grant WRITE permission to members of the Google Storage (a Google group). Granting WRITE permission to the group lets each group member upload objects to the acme-pets bucket, delete objects in the acme- pets bucket, and list objects in the acme-pets bucket. The ACLs also grant FULL_CONTROL of the acme-pets bucket, which lets Jane upload objects, delete objects, list objects, and modify ACLs on the acme- pets bucket.


PUT /?acl HTTP/1.1
Date: Thu, 10 Jun 2010 03:38:42 GMT
Content-Length: 705
Authorization: Bearer ya29.AHES6ZRVmB7fkLtd1XTmq6mo0S1wqZZi3-Lh_s-6Uw7p8vtgSwg

<?xml version="1.0" encoding="UTF-8"?>
      <Scope type="UserById">
      <Scope type="UserByEmail">
      <Scope type="GroupByEmail">

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Cloud Storage Documentation