DescribeRepositories - Amazon Elastic Container Registry


Describes image repositories in a registry.

Request Syntax

{ "maxResults": number, "nextToken": "string", "registryId": "string", "repositoryNames": [ "string" ] }

Request Parameters

For information about the parameters that are common to all actions, see Common Parameters.

The request accepts the following data in JSON format.


The maximum number of repository results returned by DescribeRepositories in paginated output. When this parameter is used, DescribeRepositories only returns maxResults results in a single page along with a nextToken response element. The remaining results of the initial request can be seen by sending another DescribeRepositories request with the returned nextToken value. This value can be between 1 and 1000. If this parameter is not used, then DescribeRepositories returns up to 100 results and a nextToken value, if applicable. This option cannot be used when you specify repositories with repositoryNames.

Type: Integer

Valid Range: Minimum value of 1. Maximum value of 1000.

Required: No


The nextToken value returned from a previous paginated DescribeRepositories request where maxResults was used and the results exceeded the value of that parameter. Pagination continues from the end of the previous results that returned the nextToken value. This value is null when there are no more results to return. This option cannot be used when you specify repositories with repositoryNames.


This token should be treated as an opaque identifier that is only used to retrieve the next items in a list and not for other programmatic purposes.

Type: String

Required: No


The AWS account ID associated with the registry that contains the repositories to be described. If you do not specify a registry, the default registry is assumed.

Type: String

Pattern: [0-9]{12}

Required: No


A list of repositories to describe. If this parameter is omitted, then all repositories in a registry are described.

Type: Array of strings

Array Members: Minimum number of 1 item. Maximum number of 100 items.

Length Constraints: Minimum length of 2. Maximum length of 256.

Pattern: (?:[a-z0-9]+(?:[._-][a-z0-9]+)*/)*[a-z0-9]+(?:[._-][a-z0-9]+)*

Required: No

Response Syntax

{ "nextToken": "string", "repositories": [ { "createdAt": number, "encryptionConfiguration": { "encryptionType": "string", "kmsKey": "string" }, "imageScanningConfiguration": { "scanOnPush": boolean }, "imageTagMutability": "string", "registryId": "string", "repositoryArn": "string", "repositoryName": "string", "repositoryUri": "string" } ] }

Response Elements

If the action is successful, the service sends back an HTTP 200 response.

The following data is returned in JSON format by the service.


The nextToken value to include in a future DescribeRepositories request. When the results of a DescribeRepositories request exceed maxResults, this value can be used to retrieve the next page of results. This value is null when there are no more results to return.

Type: String


A list of repository objects corresponding to valid repositories.

Type: Array of Repository objects


For information about the errors that are common to all actions, see Common Errors.


The specified parameter is invalid. Review the available parameters for the API request.

HTTP Status Code: 400


The specified repository could not be found. Check the spelling of the specified repository and ensure that you are performing operations on the correct registry.

HTTP Status Code: 400


These errors are usually caused by a server-side issue.

HTTP Status Code: 500


In the following example or examples, the Authorization header contents (AUTHPARAMS) must be replaced with an AWS Signature Version 4 signature. For more information about creating these signatures, see Signature Version 4 Signing Process in the AWS General Reference.

You only need to learn how to sign HTTP requests if you intend to manually create them. When you use the AWS Command Line Interface (AWS CLI) or one of the AWS SDKs to make requests to AWS, these tools automatically sign the requests for you with the access key that you specify when you configure the tools. When you use these tools, you don't need to learn how to sign requests yourself.


This example describes the repositories in the default registry for an account.

Sample Request

POST / HTTP/1.1 Host: Accept-Encoding: identity X-Amz-Target: AmazonEC2ContainerRegistry_V20150921.DescribeRepositories Content-Type: application/x-amz-json-1.1 User-Agent: aws-cli/1.16.190 Python/3.6.1 Darwin/16.7.0 botocore/1.12.180 X-Amz-Date: 20190715T205400Z Authorization: AUTHPARAMS Content-Length: 2 {}

Sample Response

HTTP/1.1 200 OK x-amzn-RequestId: 123a4b56-7c89-01d2-3ef4-example5678f Content-Type: application/x-amz-json-1.1 Content-Length: 1061 Connection: keep-alive { "repositories":[ { "createdAt":1.563223656E9, "imageTagMutability":"MUTABLE", "registryId":"012345678910", "repositoryArn":"arn:aws:ecr:us-west-2:012345678910:repository/sample-repo", "repositoryName":"sample-repo", "repositoryUri":"" }, { "createdAt":1.554824595E9, "imageTagMutability":"IMMUTABLE", "registryId":"012345678910", "repositoryArn":"arn:aws:ecr:us-west-2:012345678910:repository/tagging-test", "repositoryName":"tagging-test", "repositoryUri":"" } ] }

See Also

For more information about using this API in one of the language-specific AWS SDKs, see the following: