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# AWS::BedrockAgentCore::Runtime RequestHeaderConfiguration
<a name="aws-properties-bedrockagentcore-runtime-requestheaderconfiguration"></a>

Configuration for HTTP request headers that will be passed through to the runtime.

## Syntax
<a name="aws-properties-bedrockagentcore-runtime-requestheaderconfiguration-syntax"></a>

To declare this entity in your CloudFormation template, use the following syntax:

### JSON
<a name="aws-properties-bedrockagentcore-runtime-requestheaderconfiguration-syntax.json"></a>

```
{
  "[RequestHeaderAllowlist](#cfn-bedrockagentcore-runtime-requestheaderconfiguration-requestheaderallowlist)" : [ String, ... ]
}
```

### YAML
<a name="aws-properties-bedrockagentcore-runtime-requestheaderconfiguration-syntax.yaml"></a>

```
  [RequestHeaderAllowlist](#cfn-bedrockagentcore-runtime-requestheaderconfiguration-requestheaderallowlist): 
    - String
```

## Properties
<a name="aws-properties-bedrockagentcore-runtime-requestheaderconfiguration-properties"></a>

`RequestHeaderAllowlist`  <a name="cfn-bedrockagentcore-runtime-requestheaderconfiguration-requestheaderallowlist"></a>
A list of HTTP headers that are allowed to be passed through to the runtime.  
*Required*: No  
*Type*: Array of String  
*Minimum*: `1`  
*Maximum*: `20`  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)