# ListEnvironments


**Note**  
 AWS Migration Hub is no longer open to new customers as of November 7, 2025. For capabilities similar to AWS Migration Hub, explore [AWS Migration Hub](https://aws.amazon.com/transform).

Lists AWS Migration Hub Refactor Spaces environments owned by a caller account or shared with the caller account. 

## Request Syntax


```
GET /environments?maxResults=MaxResults&nextToken=NextToken HTTP/1.1
```

## URI Request Parameters


The request uses the following URI parameters.

 ** [MaxResults](#API_ListEnvironments_RequestSyntax) **   <a name="migrationhubrefactorspaces-ListEnvironments-request-uri-MaxResults"></a>
The maximum number of results to return with a single call. To retrieve the remaining results, make another call with the returned `nextToken` value.  
Valid Range: Minimum value of 1. Maximum value of 100.

 ** [NextToken](#API_ListEnvironments_RequestSyntax) **   <a name="migrationhubrefactorspaces-ListEnvironments-request-uri-NextToken"></a>
The token for the next page of results.  
Length Constraints: Minimum length of 1. Maximum length of 2048.  
Pattern: `[a-zA-Z0-9/\+\=]{0,2048}` 

## Request Body


The request does not have a request body.

## Response Syntax


```
HTTP/1.1 200
Content-type: application/json

{
   "EnvironmentSummaryList": [ 
      { 
         "Arn": "string",
         "CreatedTime": number,
         "Description": "string",
         "EnvironmentId": "string",
         "Error": { 
            "AccountId": "string",
            "AdditionalDetails": { 
               "string" : "string" 
            },
            "Code": "string",
            "Message": "string",
            "ResourceIdentifier": "string",
            "ResourceType": "string"
         },
         "LastUpdatedTime": number,
         "Name": "string",
         "NetworkFabricType": "string",
         "OwnerAccountId": "string",
         "State": "string",
         "Tags": { 
            "string" : "string" 
         },
         "TransitGatewayId": "string"
      }
   ],
   "NextToken": "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.

 ** [EnvironmentSummaryList](#API_ListEnvironments_ResponseSyntax) **   <a name="migrationhubrefactorspaces-ListEnvironments-response-EnvironmentSummaryList"></a>
The list of `EnvironmentSummary` objects.   
Type: Array of [EnvironmentSummary](API_EnvironmentSummary.md) objects

 ** [NextToken](#API_ListEnvironments_ResponseSyntax) **   <a name="migrationhubrefactorspaces-ListEnvironments-response-NextToken"></a>
The token for the next page of results.  
Type: String  
Length Constraints: Minimum length of 1. Maximum length of 2048.  
Pattern: `[a-zA-Z0-9/\+\=]{0,2048}` 

## Errors


For information about the errors that are common to all actions, see [Common Error Types](CommonErrors.md).

 ** AccessDeniedException **   
The user does not have sufficient access to perform this action.   
HTTP Status Code: 403

 ** InternalServerException **   
An unexpected error occurred while processing the request.  
HTTP Status Code: 500

 ** ResourceNotFoundException **   
The request references a resource that does not exist.     
 ** ResourceId **   
The ID of the resource.   
 ** ResourceType **   
The type of resource. 
HTTP Status Code: 404

 ** ThrottlingException **   
Request was denied because the request was throttled.     
 ** QuotaCode **   
Service quota requirement to identify originating quota. Reached throttling quota exception.   
 ** RetryAfterSeconds **   
The number of seconds to wait before retrying.   
 ** ServiceCode **   
Service quota requirement to identify originating service. Reached throttling quota exception service code. 
HTTP Status Code: 429

 ** ValidationException **   
The input does not satisfy the constraints specified by an AWS service.   
HTTP Status Code: 400

## See Also


For more information about using this API in one of the language-specific AWS SDKs, see the following:
+  [AWS Command Line Interface V2](https://docs.aws.amazon.com/goto/cli2/migration-hub-refactor-spaces-2021-10-26/ListEnvironments) 
+  [AWS SDK for .NET V4](https://docs.aws.amazon.com/goto/DotNetSDKV4/migration-hub-refactor-spaces-2021-10-26/ListEnvironments) 
+  [AWS SDK for C\$1\$1](https://docs.aws.amazon.com/goto/SdkForCpp/migration-hub-refactor-spaces-2021-10-26/ListEnvironments) 
+  [AWS SDK for Go v2](https://docs.aws.amazon.com/goto/SdkForGoV2/migration-hub-refactor-spaces-2021-10-26/ListEnvironments) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/migration-hub-refactor-spaces-2021-10-26/ListEnvironments) 
+  [AWS SDK for JavaScript V3](https://docs.aws.amazon.com/goto/SdkForJavaScriptV3/migration-hub-refactor-spaces-2021-10-26/ListEnvironments) 
+  [AWS SDK for Kotlin](https://docs.aws.amazon.com/goto/SdkForKotlin/migration-hub-refactor-spaces-2021-10-26/ListEnvironments) 
+  [AWS SDK for PHP V3](https://docs.aws.amazon.com/goto/SdkForPHPV3/migration-hub-refactor-spaces-2021-10-26/ListEnvironments) 
+  [AWS SDK for Python](https://docs.aws.amazon.com/goto/boto3/migration-hub-refactor-spaces-2021-10-26/ListEnvironments) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/migration-hub-refactor-spaces-2021-10-26/ListEnvironments)