# SystemTool
<a name="API_runtime_SystemTool"></a>

Specifies a system-defined tool for the model to use. *System-defined tools* are tools that are created and provided by the model provider.

## Contents
<a name="API_runtime_SystemTool_Contents"></a>

 ** name **   <a name="bedrock-Type-runtime_SystemTool-name"></a>
The name of the system-defined tool that you want to call.   
Type: String  
Length Constraints: Minimum length of 1. Maximum length of 64.  
Pattern: `[a-zA-Z0-9_-]+`   
Required: Yes

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

For more information about using this API in one of the language-specific AWS SDKs, see the following:
+  [AWS SDK for C\$1\$1](https://docs.aws.amazon.com/goto/SdkForCpp/bedrock-runtime-2023-09-30/SystemTool) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/bedrock-runtime-2023-09-30/SystemTool) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/bedrock-runtime-2023-09-30/SystemTool)