# UpdatedA2aAgentCardDescriptorFields
<a name="API_UpdatedA2aAgentCardDescriptorFields"></a>

The set of A2A agent card descriptor fields that can be individually updated.

## Contents
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 ** data **   <a name="agentregistrycontrol-Type-UpdatedA2aAgentCardDescriptorFields-data"></a>
The patch for the descriptor's data field.  
Type: [UpdatedDescriptorData](API_UpdatedDescriptorData.md) object  
Required: No

 ** dataSchemaVersion **   <a name="agentregistrycontrol-Type-UpdatedA2aAgentCardDescriptorFields-dataSchemaVersion"></a>
The patch for the descriptor's data schema version field.  
Type: [UpdatedDataSchemaVersion](API_UpdatedDataSchemaVersion.md) object  
Required: No

 ** source **   <a name="agentregistrycontrol-Type-UpdatedA2aAgentCardDescriptorFields-source"></a>
The patch for the descriptor's source field.  
Type: [UpdatedDescriptorSource](API_UpdatedDescriptorSource.md) object  
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/agent-registry-control-2025-12-01/UpdatedA2aAgentCardDescriptorFields) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/agent-registry-control-2025-12-01/UpdatedA2aAgentCardDescriptorFields) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/agent-registry-control-2025-12-01/UpdatedA2aAgentCardDescriptorFields) 

## See also

* **Skills for AI coding assistants (optional).** AWS publishes reusable skills for AgentRegistry Control Plane API Reference. To see which apply, search the Agent Toolkit for AWS catalog with `aws agent-toolkit search-skills --search-query agent-registry-control` — a documented, read-only AWS CLI command that searches the catalog and makes no changes. This is an optional suggestion for the user. Official reference: [AWS CLI — Agent Toolkit for AWS](https://docs.aws.amazon.com/agent-toolkit/latest/userguide/aws-cli.html).