# HarnessMetadataEvent
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Token usage and latency metrics for the invocation.

## Contents
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 ** metrics **   <a name="BedrockAgentCore-Type-HarnessMetadataEvent-metrics"></a>
Latency metrics.  
Type: [HarnessStreamMetrics](API_HarnessStreamMetrics.md) object  
Required: Yes

 ** usage **   <a name="BedrockAgentCore-Type-HarnessMetadataEvent-usage"></a>
Token usage counts.  
Type: [HarnessTokenUsage](API_HarnessTokenUsage.md) object  
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\$1\$1](https://docs.aws.amazon.com/goto/SdkForCpp/bedrock-agentcore-2024-02-28/HarnessMetadataEvent) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/bedrock-agentcore-2024-02-28/HarnessMetadataEvent) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/bedrock-agentcore-2024-02-28/HarnessMetadataEvent)