# HarnessBeforeInvocationHook
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The configuration for a hook that runs before an invocation begins.

## Contents
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 ** name **   <a name="bedrockagentcorecontrol-Type-HarnessBeforeInvocationHook-name"></a>
The name of the hook.  
Type: String  
Length Constraints: Minimum length of 1. Maximum length of 64.  
Pattern: `[a-zA-Z0-9_-]+`   
Required: Yes

 ** target **   <a name="bedrockagentcorecontrol-Type-HarnessBeforeInvocationHook-target"></a>
The target that receives the hook event.  
Type: [HarnessHookTarget](API_HarnessHookTarget.md) object  
 **Note: **This object is a Union. Only one member of this object can be specified or returned.  
Required: Yes

## See Also
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For more information about using this API in one of the language-specific AWS SDKs, see the following:
+  [AWS SDK for C\+\+](https://docs.aws.amazon.com/goto/SdkForCpp/bedrock-agentcore-control-2023-06-05/HarnessBeforeInvocationHook) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/bedrock-agentcore-control-2023-06-05/HarnessBeforeInvocationHook) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/bedrock-agentcore-control-2023-06-05/HarnessBeforeInvocationHook)