# SendMessageContentBlockDeltaEvent
<a name="API_SendMessageContentBlockDeltaEvent"></a>

Event emitted for each incremental content delta within a content block

## Contents
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 ** delta **   <a name="devopsagent-Type-SendMessageContentBlockDeltaEvent-delta"></a>
The incremental content delta  
Type: [SendMessageContentBlockDelta](API_SendMessageContentBlockDelta.md) object  
 **Note: **This object is a Union. Only one member of this object can be specified or returned.  
Required: No

 ** index **   <a name="devopsagent-Type-SendMessageContentBlockDeltaEvent-index"></a>
Zero-based index of the content block  
Type: Integer  
Required: No

 ** sequenceNumber **   <a name="devopsagent-Type-SendMessageContentBlockDeltaEvent-sequenceNumber"></a>
Event sequence number  
Type: Integer  
Required: No

## 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/devops-agent-2026-01-01/SendMessageContentBlockDeltaEvent) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/devops-agent-2026-01-01/SendMessageContentBlockDeltaEvent) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/devops-agent-2026-01-01/SendMessageContentBlockDeltaEvent)