AWS has decided to discontinue AWS Proton, with support ending on October 7, 2026. New customers will not be able to sign up after October 7, 2025, but existing customers can continue to use the service until October 7, 2026.For more information, see [AWS Proton Service Deprecation and Migration Guide](https://docs.aws.amazon.com/proton/latest/userguide/proton-end-of-support.html).

# ListTagsForResource
<a name="API_ListTagsForResource"></a>

List tags for a resource. For more information, see [AWS Proton resources and tagging](https://docs.aws.amazon.com/proton/latest/userguide/resources.html) in the * AWS Proton User Guide*.

## Request Syntax
<a name="API_ListTagsForResource_RequestSyntax"></a>

```
{
   "maxResults": {{number}},
   "nextToken": "{{string}}",
   "resourceArn": "{{string}}"
}
```

## Request Parameters
<a name="API_ListTagsForResource_RequestParameters"></a>

For information about the parameters that are common to all actions, see [Common Parameters](CommonParameters.md).

The request accepts the following data in JSON format.

 ** [maxResults](#API_ListTagsForResource_RequestSyntax) **   <a name="proton-ListTagsForResource-request-maxResults"></a>
The maximum number of tags to list.  
Type: Integer  
Valid Range: Minimum value of 1. Maximum value of 100.  
Required: No

 ** [nextToken](#API_ListTagsForResource_RequestSyntax) **   <a name="proton-ListTagsForResource-request-nextToken"></a>
A token that indicates the location of the next resource tag in the array of resource tags, after the list of resource tags that was previously requested.  
Type: String  
Required: No

 ** [resourceArn](#API_ListTagsForResource_RequestSyntax) **   <a name="proton-ListTagsForResource-request-resourceArn"></a>
The Amazon Resource Name (ARN) of the resource for the listed tags.  
Type: String  
Length Constraints: Minimum length of 1. Maximum length of 200.  
Pattern: `arn:(aws|aws-cn|aws-us-gov):[a-zA-Z0-9-]+:[a-zA-Z0-9-]*:\d{12}:([\w+=,.@-]+[/:])*[\w+=,.@-]+`   
Required: Yes

## Response Syntax
<a name="API_ListTagsForResource_ResponseSyntax"></a>

```
{
   "nextToken": "string",
   "tags": [ 
      { 
         "key": "string",
         "value": "string"
      }
   ]
}
```

## Response Elements
<a name="API_ListTagsForResource_ResponseElements"></a>

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

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

 ** [nextToken](#API_ListTagsForResource_ResponseSyntax) **   <a name="proton-ListTagsForResource-response-nextToken"></a>
A token that indicates the location of the next resource tag in the array of resource tags, after the current requested list of resource tags.  
Type: String

 ** [tags](#API_ListTagsForResource_ResponseSyntax) **   <a name="proton-ListTagsForResource-response-tags"></a>
A list of resource tags with detail data.  
Type: Array of [Tag](API_Tag.md) objects  
Array Members: Minimum number of 0 items. Maximum number of 50 items.

## Errors
<a name="API_ListTagsForResource_Errors"></a>

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

 ** AccessDeniedException **   
There *isn't* sufficient access for performing this action.  
HTTP Status Code: 400

 ** InternalServerException **   
The request failed to register with the service.  
HTTP Status Code: 500

 ** ResourceNotFoundException **   
The requested resource *wasn't* found.  
HTTP Status Code: 400

 ** ThrottlingException **   
The request was denied due to request throttling.  
HTTP Status Code: 400

 ** ValidationException **   
The input is invalid or an out-of-range value was supplied for the input parameter.  
HTTP Status Code: 400

## See Also
<a name="API_ListTagsForResource_SeeAlso"></a>

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/proton-2020-07-20/ListTagsForResource) 
+  [AWS SDK for .NET V4](https://docs.aws.amazon.com/goto/DotNetSDKV4/proton-2020-07-20/ListTagsForResource) 
+  [AWS SDK for C\+\+](https://docs.aws.amazon.com/goto/SdkForCpp/proton-2020-07-20/ListTagsForResource) 
+  [AWS SDK for Go v2](https://docs.aws.amazon.com/goto/SdkForGoV2/proton-2020-07-20/ListTagsForResource) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/proton-2020-07-20/ListTagsForResource) 
+  [AWS SDK for JavaScript V3](https://docs.aws.amazon.com/goto/SdkForJavaScriptV3/proton-2020-07-20/ListTagsForResource) 
+  [AWS SDK for Kotlin](https://docs.aws.amazon.com/goto/SdkForKotlin/proton-2020-07-20/ListTagsForResource) 
+  [AWS SDK for PHP V3](https://docs.aws.amazon.com/goto/SdkForPHPV3/proton-2020-07-20/ListTagsForResource) 
+  [AWS SDK for Python](https://docs.aws.amazon.com/goto/boto3/proton-2020-07-20/ListTagsForResource) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/proton-2020-07-20/ListTagsForResource)