# ListAssetModels
<a name="API_ListAssetModels"></a>

Retrieves a paginated list of summaries of all asset models.

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

```
GET /asset-models?assetModelTypes=assetModelTypes&assetModelVersion=assetModelVersion&maxResults=maxResults&nextToken=nextToken HTTP/1.1
```

## URI Request Parameters
<a name="API_ListAssetModels_RequestParameters"></a>

The request uses the following URI parameters.

 ** [assetModelTypes](#API_ListAssetModels_RequestSyntax) **   <a name="iotsitewise-ListAssetModels-request-uri-assetModelTypes"></a>
The type of asset model. If you don't provide an `assetModelTypes`, all types of asset models are returned.  
+  **ASSET\$1MODEL** – An asset model that you can use to create assets. Can't be included as a component in another asset model.
+  **COMPONENT\$1MODEL** – A reusable component that you can include in the composite models of other asset models. You can't create assets directly from this type of asset model. 
+  **INTERFACE** – An interface is a type of model that defines a standard structure that can be applied to different asset models.
Valid Values: `ASSET_MODEL | COMPONENT_MODEL | INTERFACE` 

 ** [assetModelVersion](#API_ListAssetModels_RequestSyntax) **   <a name="iotsitewise-ListAssetModels-request-uri-assetModelVersion"></a>
The version alias that specifies the latest or active version of the asset model. The details are returned in the response. The default value is `LATEST`. See [ Asset model versions](https://docs.amazonaws.cn/iot-sitewise/latest/userguide/model-active-version.html) in the * Amazon IoT SiteWise User Guide*.  
Pattern: `^(LATEST|ACTIVE)$` 

 ** [maxResults](#API_ListAssetModels_RequestSyntax) **   <a name="iotsitewise-ListAssetModels-request-uri-maxResults"></a>
The maximum number of results to return for each paginated request.  
Default: 50  
Valid Range: Minimum value of 1. Maximum value of 250.

 ** [nextToken](#API_ListAssetModels_RequestSyntax) **   <a name="iotsitewise-ListAssetModels-request-uri-nextToken"></a>
The token to be used for the next set of paginated results.  
Length Constraints: Minimum length of 1. Maximum length of 4096.  
Pattern: `[A-Za-z0-9+/=]+` 

## Request Body
<a name="API_ListAssetModels_RequestBody"></a>

The request does not have a request body.

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

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

{
   "assetModelSummaries": [ 
      { 
         "arn": "string",
         "assetModelType": "string",
         "creationDate": number,
         "description": "string",
         "externalId": "string",
         "id": "string",
         "lastUpdateDate": number,
         "name": "string",
         "status": { 
            "error": { 
               "code": "string",
               "details": [ 
                  { 
                     "code": "string",
                     "message": "string"
                  }
               ],
               "message": "string"
            },
            "state": "string"
         },
         "version": "string"
      }
   ],
   "nextToken": "string"
}
```

## Response Elements
<a name="API_ListAssetModels_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.

 ** [assetModelSummaries](#API_ListAssetModels_ResponseSyntax) **   <a name="iotsitewise-ListAssetModels-response-assetModelSummaries"></a>
A list that summarizes each asset model.  
Type: Array of [AssetModelSummary](API_AssetModelSummary.md) objects

 ** [nextToken](#API_ListAssetModels_ResponseSyntax) **   <a name="iotsitewise-ListAssetModels-response-nextToken"></a>
The token for the next set of results, or null if there are no additional results.  
Type: String  
Length Constraints: Minimum length of 1. Maximum length of 4096.  
Pattern: `[A-Za-z0-9+/=]+` 

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

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

 ** InternalFailureException **   
 Amazon IoT SiteWise can't process your request right now. Try again later.  
HTTP Status Code: 500

 ** InvalidRequestException **   
The request isn't valid. This can occur if your request contains malformed JSON or unsupported characters. Check your request and try again.  
HTTP Status Code: 400

 ** ThrottlingException **   
Your request exceeded a rate limit. For example, you might have exceeded the number of Amazon IoT SiteWise assets that can be created per second, the allowed number of messages per second, and so on.  
For more information, see [Quotas](https://docs.amazonaws.cn/iot-sitewise/latest/userguide/quotas.html) in the * Amazon IoT SiteWise User Guide*.  
HTTP Status Code: 429

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

For more information about using this API in one of the language-specific Amazon SDKs, see the following:
+  [Amazon Command Line Interface V2](https://docs.amazonaws.cn/goto/cli2/iotsitewise-2019-12-02/ListAssetModels) 
+  [Amazon SDK for .NET V4](https://docs.amazonaws.cn/goto/DotNetSDKV4/iotsitewise-2019-12-02/ListAssetModels) 
+  [Amazon SDK for C\$1\$1](https://docs.amazonaws.cn/goto/SdkForCpp/iotsitewise-2019-12-02/ListAssetModels) 
+  [Amazon SDK for Go v2](https://docs.amazonaws.cn/goto/SdkForGoV2/iotsitewise-2019-12-02/ListAssetModels) 
+  [Amazon SDK for Java V2](https://docs.amazonaws.cn/goto/SdkForJavaV2/iotsitewise-2019-12-02/ListAssetModels) 
+  [Amazon SDK for JavaScript V3](https://docs.amazonaws.cn/goto/SdkForJavaScriptV3/iotsitewise-2019-12-02/ListAssetModels) 
+  [Amazon SDK for Kotlin](https://docs.amazonaws.cn/goto/SdkForKotlin/iotsitewise-2019-12-02/ListAssetModels) 
+  [Amazon SDK for PHP V3](https://docs.amazonaws.cn/goto/SdkForPHPV3/iotsitewise-2019-12-02/ListAssetModels) 
+  [Amazon SDK for Python](https://docs.amazonaws.cn/goto/boto3/iotsitewise-2019-12-02/ListAssetModels) 
+  [Amazon SDK for Ruby V3](https://docs.amazonaws.cn/goto/SdkForRubyV3/iotsitewise-2019-12-02/ListAssetModels)