This is the new *CloudFormation Template Reference Guide*. Please update your bookmarks and links. For help getting started with CloudFormation, see the [AWS CloudFormation User Guide](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/Welcome.html).

# AWS::BedrockAgentCore::Evaluator
<a name="aws-resource-bedrockagentcore-evaluator"></a>

Specifies an evaluator for Amazon Bedrock AgentCore. An evaluator assesses agent quality using LLM-as-a-Judge configurations to measure and improve agent performance.

For more information, see [Evaluate agent quality with Amazon Bedrock AgentCore](https://docs.aws.amazon.com/bedrock-agentcore/latest/devguide/evaluators.html).

See the **Properties** section below for descriptions of both the required and optional properties.

## Syntax
<a name="aws-resource-bedrockagentcore-evaluator-syntax"></a>

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

### JSON
<a name="aws-resource-bedrockagentcore-evaluator-syntax.json"></a>

```
{
  "Type" : "AWS::BedrockAgentCore::Evaluator",
  "Properties" : {
      "[Description](#cfn-bedrockagentcore-evaluator-description)" : String,
      "[EvaluatorConfig](#cfn-bedrockagentcore-evaluator-evaluatorconfig)" : EvaluatorConfig,
      "[EvaluatorName](#cfn-bedrockagentcore-evaluator-evaluatorname)" : String,
      "[Level](#cfn-bedrockagentcore-evaluator-level)" : String,
      "[Tags](#cfn-bedrockagentcore-evaluator-tags)" : [ Tag, ... ]
    }
}
```

### YAML
<a name="aws-resource-bedrockagentcore-evaluator-syntax.yaml"></a>

```
Type: AWS::BedrockAgentCore::Evaluator
Properties:
  [Description](#cfn-bedrockagentcore-evaluator-description): String
  [EvaluatorConfig](#cfn-bedrockagentcore-evaluator-evaluatorconfig): 
    EvaluatorConfig
  [EvaluatorName](#cfn-bedrockagentcore-evaluator-evaluatorname): String
  [Level](#cfn-bedrockagentcore-evaluator-level): String
  [Tags](#cfn-bedrockagentcore-evaluator-tags): 
    - Tag
```

## Properties
<a name="aws-resource-bedrockagentcore-evaluator-properties"></a>

`Description`  <a name="cfn-bedrockagentcore-evaluator-description"></a>
 The description of the evaluator.   
*Required*: No  
*Type*: String  
*Minimum*: `1`  
*Maximum*: `200`  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`EvaluatorConfig`  <a name="cfn-bedrockagentcore-evaluator-evaluatorconfig"></a>
 The configuration of the evaluator, including LLM-as-a-Judge settings for custom evaluators.   
*Required*: Yes  
*Type*: [EvaluatorConfig](aws-properties-bedrockagentcore-evaluator-evaluatorconfig.md)  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`EvaluatorName`  <a name="cfn-bedrockagentcore-evaluator-evaluatorname"></a>
 The name of the evaluator.   
*Required*: Yes  
*Type*: String  
*Pattern*: `^[a-zA-Z][a-zA-Z0-9_]{0,47}$`  
*Update requires*: [Replacement](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-replacement)

`Level`  <a name="cfn-bedrockagentcore-evaluator-level"></a>
 The evaluation level (`TOOL_CALL`, `TRACE`, or `SESSION`) that determines the scope of evaluation.   
*Required*: Yes  
*Type*: String  
*Allowed values*: `TOOL_CALL | TRACE | SESSION`  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`Tags`  <a name="cfn-bedrockagentcore-evaluator-tags"></a>
The tags for the evaluator.  
*Required*: No  
*Type*: Array of [Tag](aws-properties-bedrockagentcore-evaluator-tag.md)  
*Maximum*: `50`  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

## Return values
<a name="aws-resource-bedrockagentcore-evaluator-return-values"></a>

### Ref
<a name="aws-resource-bedrockagentcore-evaluator-return-values-ref"></a>

When you pass the logical ID of this resource to the intrinsic `Ref` function, `Ref` returns the ARN of the evaluator. For example:

 `arn:aws:bedrock-agentcore:us-east-1:123456789012:evaluator/EXAMPLE12345` 

For more information about using the `Ref` function, see [https://docs.aws.amazon.com/AWSCloudFormation/latest/TemplateReference/intrinsic-function-reference-ref.html](https://docs.aws.amazon.com/AWSCloudFormation/latest/TemplateReference/intrinsic-function-reference-ref.html).

### Fn::GetAtt
<a name="aws-resource-bedrockagentcore-evaluator-return-values-fn--getatt"></a>

The `Fn::GetAtt` intrinsic function returns a value for a specified attribute of this type. The following are the available attributes and sample return values.

For more information about using the `Fn::GetAtt` intrinsic function, see [https://docs.aws.amazon.com/AWSCloudFormation/latest/TemplateReference/intrinsic-function-reference-getatt.html](https://docs.aws.amazon.com/AWSCloudFormation/latest/TemplateReference/intrinsic-function-reference-getatt.html).

#### 
<a name="aws-resource-bedrockagentcore-evaluator-return-values-fn--getatt-fn--getatt"></a>

`CreatedAt`  <a name="CreatedAt-fn::getatt"></a>
The timestamp when the evaluator was created.

`EvaluatorArn`  <a name="EvaluatorArn-fn::getatt"></a>
The Amazon Resource Name (ARN) of the evaluator.

`EvaluatorId`  <a name="EvaluatorId-fn::getatt"></a>
The unique identifier of the evaluator.

`Status`  <a name="Status-fn::getatt"></a>
The current status of the evaluator.

`UpdatedAt`  <a name="UpdatedAt-fn::getatt"></a>
The timestamp when the evaluator was last updated.

# AWS::BedrockAgentCore::Evaluator BedrockEvaluatorModelConfig
<a name="aws-properties-bedrockagentcore-evaluator-bedrockevaluatormodelconfig"></a>

 The Amazon Bedrock model configuration for evaluation. 

## Syntax
<a name="aws-properties-bedrockagentcore-evaluator-bedrockevaluatormodelconfig-syntax"></a>

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

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

```
{
  "[AdditionalModelRequestFields](#cfn-bedrockagentcore-evaluator-bedrockevaluatormodelconfig-additionalmodelrequestfields)" : Json,
  "[InferenceConfig](#cfn-bedrockagentcore-evaluator-bedrockevaluatormodelconfig-inferenceconfig)" : InferenceConfiguration,
  "[ModelId](#cfn-bedrockagentcore-evaluator-bedrockevaluatormodelconfig-modelid)" : String
}
```

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

```
  [AdditionalModelRequestFields](#cfn-bedrockagentcore-evaluator-bedrockevaluatormodelconfig-additionalmodelrequestfields): Json
  [InferenceConfig](#cfn-bedrockagentcore-evaluator-bedrockevaluatormodelconfig-inferenceconfig): 
    InferenceConfiguration
  [ModelId](#cfn-bedrockagentcore-evaluator-bedrockevaluatormodelconfig-modelid): String
```

## Properties
<a name="aws-properties-bedrockagentcore-evaluator-bedrockevaluatormodelconfig-properties"></a>

`AdditionalModelRequestFields`  <a name="cfn-bedrockagentcore-evaluator-bedrockevaluatormodelconfig-additionalmodelrequestfields"></a>
 Additional model-specific request fields to customize model behavior beyond the standard inference configuration.   
*Required*: No  
*Type*: Json  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`InferenceConfig`  <a name="cfn-bedrockagentcore-evaluator-bedrockevaluatormodelconfig-inferenceconfig"></a>
 The inference configuration parameters that control model behavior during evaluation, including temperature, token limits, and sampling settings.   
*Required*: No  
*Type*: [InferenceConfiguration](aws-properties-bedrockagentcore-evaluator-inferenceconfiguration.md)  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`ModelId`  <a name="cfn-bedrockagentcore-evaluator-bedrockevaluatormodelconfig-modelid"></a>
 The identifier of the Amazon Bedrock model to use for evaluation. Must be a supported foundation model available in your region.   
*Required*: Yes  
*Type*: String  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

# AWS::BedrockAgentCore::Evaluator CategoricalScaleDefinition
<a name="aws-properties-bedrockagentcore-evaluator-categoricalscaledefinition"></a>

 The definition of a categorical rating scale option that provides a named category with its description for evaluation scoring. 

## Syntax
<a name="aws-properties-bedrockagentcore-evaluator-categoricalscaledefinition-syntax"></a>

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

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

```
{
  "[Definition](#cfn-bedrockagentcore-evaluator-categoricalscaledefinition-definition)" : String,
  "[Label](#cfn-bedrockagentcore-evaluator-categoricalscaledefinition-label)" : String
}
```

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

```
  [Definition](#cfn-bedrockagentcore-evaluator-categoricalscaledefinition-definition): String
  [Label](#cfn-bedrockagentcore-evaluator-categoricalscaledefinition-label): String
```

## Properties
<a name="aws-properties-bedrockagentcore-evaluator-categoricalscaledefinition-properties"></a>

`Definition`  <a name="cfn-bedrockagentcore-evaluator-categoricalscaledefinition-definition"></a>
 The description that explains what this categorical rating represents and when it should be used.   
*Required*: Yes  
*Type*: String  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`Label`  <a name="cfn-bedrockagentcore-evaluator-categoricalscaledefinition-label"></a>
 The label or name of this categorical rating option.   
*Required*: Yes  
*Type*: String  
*Minimum*: `1`  
*Maximum*: `100`  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

# AWS::BedrockAgentCore::Evaluator CodeBasedEvaluatorConfig
<a name="aws-properties-bedrockagentcore-evaluator-codebasedevaluatorconfig"></a>

<a name="aws-properties-bedrockagentcore-evaluator-codebasedevaluatorconfig-description"></a>The `CodeBasedEvaluatorConfig` property type specifies Property description not available. for an [AWS::BedrockAgentCore::Evaluator](aws-resource-bedrockagentcore-evaluator.md).

## Syntax
<a name="aws-properties-bedrockagentcore-evaluator-codebasedevaluatorconfig-syntax"></a>

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

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

```
{
  "[LambdaConfig](#cfn-bedrockagentcore-evaluator-codebasedevaluatorconfig-lambdaconfig)" : LambdaEvaluatorConfig
}
```

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

```
  [LambdaConfig](#cfn-bedrockagentcore-evaluator-codebasedevaluatorconfig-lambdaconfig): 
    LambdaEvaluatorConfig
```

## Properties
<a name="aws-properties-bedrockagentcore-evaluator-codebasedevaluatorconfig-properties"></a>

`LambdaConfig`  <a name="cfn-bedrockagentcore-evaluator-codebasedevaluatorconfig-lambdaconfig"></a>
Property description not available.  
*Required*: Yes  
*Type*: [LambdaEvaluatorConfig](aws-properties-bedrockagentcore-evaluator-lambdaevaluatorconfig.md)  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

# AWS::BedrockAgentCore::Evaluator EvaluatorConfig
<a name="aws-properties-bedrockagentcore-evaluator-evaluatorconfig"></a>

 The configuration of the evaluator, including LLM-as-a-Judge settings for custom evaluators. 

## Syntax
<a name="aws-properties-bedrockagentcore-evaluator-evaluatorconfig-syntax"></a>

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

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

```
{
  "[CodeBased](#cfn-bedrockagentcore-evaluator-evaluatorconfig-codebased)" : CodeBasedEvaluatorConfig,
  "[LlmAsAJudge](#cfn-bedrockagentcore-evaluator-evaluatorconfig-llmasajudge)" : LlmAsAJudgeEvaluatorConfig
}
```

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

```
  [CodeBased](#cfn-bedrockagentcore-evaluator-evaluatorconfig-codebased): 
    CodeBasedEvaluatorConfig
  [LlmAsAJudge](#cfn-bedrockagentcore-evaluator-evaluatorconfig-llmasajudge): 
    LlmAsAJudgeEvaluatorConfig
```

## Properties
<a name="aws-properties-bedrockagentcore-evaluator-evaluatorconfig-properties"></a>

`CodeBased`  <a name="cfn-bedrockagentcore-evaluator-evaluatorconfig-codebased"></a>
Property description not available.  
*Required*: No  
*Type*: [CodeBasedEvaluatorConfig](aws-properties-bedrockagentcore-evaluator-codebasedevaluatorconfig.md)  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`LlmAsAJudge`  <a name="cfn-bedrockagentcore-evaluator-evaluatorconfig-llmasajudge"></a>
 The LLM-as-a-Judge configuration that uses a language model to evaluate agent performance based on custom instructions and rating scales.   
*Required*: No  
*Type*: [LlmAsAJudgeEvaluatorConfig](aws-properties-bedrockagentcore-evaluator-llmasajudgeevaluatorconfig.md)  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

# AWS::BedrockAgentCore::Evaluator EvaluatorModelConfig
<a name="aws-properties-bedrockagentcore-evaluator-evaluatormodelconfig"></a>

 The model configuration that specifies which foundation model to use and how to configure it for evaluation. 

## Syntax
<a name="aws-properties-bedrockagentcore-evaluator-evaluatormodelconfig-syntax"></a>

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

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

```
{
  "[BedrockEvaluatorModelConfig](#cfn-bedrockagentcore-evaluator-evaluatormodelconfig-bedrockevaluatormodelconfig)" : BedrockEvaluatorModelConfig
}
```

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

```
  [BedrockEvaluatorModelConfig](#cfn-bedrockagentcore-evaluator-evaluatormodelconfig-bedrockevaluatormodelconfig): 
    BedrockEvaluatorModelConfig
```

## Properties
<a name="aws-properties-bedrockagentcore-evaluator-evaluatormodelconfig-properties"></a>

`BedrockEvaluatorModelConfig`  <a name="cfn-bedrockagentcore-evaluator-evaluatormodelconfig-bedrockevaluatormodelconfig"></a>
 The Amazon Bedrock model configuration for evaluation.   
*Required*: Yes  
*Type*: [BedrockEvaluatorModelConfig](aws-properties-bedrockagentcore-evaluator-bedrockevaluatormodelconfig.md)  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

# AWS::BedrockAgentCore::Evaluator InferenceConfiguration
<a name="aws-properties-bedrockagentcore-evaluator-inferenceconfiguration"></a>

 The inference configuration parameters that control model behavior during evaluation, including temperature, token limits, and sampling settings. 

## Syntax
<a name="aws-properties-bedrockagentcore-evaluator-inferenceconfiguration-syntax"></a>

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

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

```
{
  "[MaxTokens](#cfn-bedrockagentcore-evaluator-inferenceconfiguration-maxtokens)" : Integer,
  "[Temperature](#cfn-bedrockagentcore-evaluator-inferenceconfiguration-temperature)" : Number,
  "[TopP](#cfn-bedrockagentcore-evaluator-inferenceconfiguration-topp)" : Number
}
```

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

```
  [MaxTokens](#cfn-bedrockagentcore-evaluator-inferenceconfiguration-maxtokens): Integer
  [Temperature](#cfn-bedrockagentcore-evaluator-inferenceconfiguration-temperature): Number
  [TopP](#cfn-bedrockagentcore-evaluator-inferenceconfiguration-topp): Number
```

## Properties
<a name="aws-properties-bedrockagentcore-evaluator-inferenceconfiguration-properties"></a>

`MaxTokens`  <a name="cfn-bedrockagentcore-evaluator-inferenceconfiguration-maxtokens"></a>
 The maximum number of tokens to generate in the model response during evaluation.   
*Required*: No  
*Type*: Integer  
*Minimum*: `1`  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`Temperature`  <a name="cfn-bedrockagentcore-evaluator-inferenceconfiguration-temperature"></a>
 The temperature value that controls randomness in the model's responses. Lower values produce more deterministic outputs.   
*Required*: No  
*Type*: Number  
*Minimum*: `0`  
*Maximum*: `1`  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`TopP`  <a name="cfn-bedrockagentcore-evaluator-inferenceconfiguration-topp"></a>
 The top-p sampling parameter that controls the diversity of the model's responses by limiting the cumulative probability of token choices.   
*Required*: No  
*Type*: Number  
*Minimum*: `0`  
*Maximum*: `1`  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

# AWS::BedrockAgentCore::Evaluator LambdaEvaluatorConfig
<a name="aws-properties-bedrockagentcore-evaluator-lambdaevaluatorconfig"></a>

<a name="aws-properties-bedrockagentcore-evaluator-lambdaevaluatorconfig-description"></a>The `LambdaEvaluatorConfig` property type specifies Property description not available. for an [AWS::BedrockAgentCore::Evaluator](aws-resource-bedrockagentcore-evaluator.md).

## Syntax
<a name="aws-properties-bedrockagentcore-evaluator-lambdaevaluatorconfig-syntax"></a>

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

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

```
{
  "[LambdaArn](#cfn-bedrockagentcore-evaluator-lambdaevaluatorconfig-lambdaarn)" : String,
  "[LambdaTimeoutInSeconds](#cfn-bedrockagentcore-evaluator-lambdaevaluatorconfig-lambdatimeoutinseconds)" : Integer
}
```

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

```
  [LambdaArn](#cfn-bedrockagentcore-evaluator-lambdaevaluatorconfig-lambdaarn): String
  [LambdaTimeoutInSeconds](#cfn-bedrockagentcore-evaluator-lambdaevaluatorconfig-lambdatimeoutinseconds): Integer
```

## Properties
<a name="aws-properties-bedrockagentcore-evaluator-lambdaevaluatorconfig-properties"></a>

`LambdaArn`  <a name="cfn-bedrockagentcore-evaluator-lambdaevaluatorconfig-lambdaarn"></a>
Property description not available.  
*Required*: Yes  
*Type*: String  
*Pattern*: `^arn:(aws[a-zA-Z-]*)?:lambda:([a-z]{2}(-gov)?-[a-z]+-\d{1}):(\d{12}):function:([a-zA-Z0-9-_.]+)(:(\$LATEST|[a-zA-Z0-9-_]+))?$`  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`LambdaTimeoutInSeconds`  <a name="cfn-bedrockagentcore-evaluator-lambdaevaluatorconfig-lambdatimeoutinseconds"></a>
Property description not available.  
*Required*: No  
*Type*: Integer  
*Minimum*: `1`  
*Maximum*: `300`  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

# AWS::BedrockAgentCore::Evaluator LlmAsAJudgeEvaluatorConfig
<a name="aws-properties-bedrockagentcore-evaluator-llmasajudgeevaluatorconfig"></a>

 The LLM-as-a-Judge configuration that uses a language model to evaluate agent performance based on custom instructions and rating scales. 

## Syntax
<a name="aws-properties-bedrockagentcore-evaluator-llmasajudgeevaluatorconfig-syntax"></a>

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

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

```
{
  "[Instructions](#cfn-bedrockagentcore-evaluator-llmasajudgeevaluatorconfig-instructions)" : String,
  "[ModelConfig](#cfn-bedrockagentcore-evaluator-llmasajudgeevaluatorconfig-modelconfig)" : EvaluatorModelConfig,
  "[RatingScale](#cfn-bedrockagentcore-evaluator-llmasajudgeevaluatorconfig-ratingscale)" : RatingScale
}
```

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

```
  [Instructions](#cfn-bedrockagentcore-evaluator-llmasajudgeevaluatorconfig-instructions): String
  [ModelConfig](#cfn-bedrockagentcore-evaluator-llmasajudgeevaluatorconfig-modelconfig): 
    EvaluatorModelConfig
  [RatingScale](#cfn-bedrockagentcore-evaluator-llmasajudgeevaluatorconfig-ratingscale): 
    RatingScale
```

## Properties
<a name="aws-properties-bedrockagentcore-evaluator-llmasajudgeevaluatorconfig-properties"></a>

`Instructions`  <a name="cfn-bedrockagentcore-evaluator-llmasajudgeevaluatorconfig-instructions"></a>
 The evaluation instructions that guide the language model in assessing agent performance, including criteria and evaluation guidelines.   
*Required*: Yes  
*Type*: String  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`ModelConfig`  <a name="cfn-bedrockagentcore-evaluator-llmasajudgeevaluatorconfig-modelconfig"></a>
 The model configuration that specifies which foundation model to use and how to configure it for evaluation.   
*Required*: Yes  
*Type*: [EvaluatorModelConfig](aws-properties-bedrockagentcore-evaluator-evaluatormodelconfig.md)  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`RatingScale`  <a name="cfn-bedrockagentcore-evaluator-llmasajudgeevaluatorconfig-ratingscale"></a>
 The rating scale that defines how the evaluator should score agent performance, either numerical or categorical.   
*Required*: Yes  
*Type*: [RatingScale](aws-properties-bedrockagentcore-evaluator-ratingscale.md)  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

# AWS::BedrockAgentCore::Evaluator NumericalScaleDefinition
<a name="aws-properties-bedrockagentcore-evaluator-numericalscaledefinition"></a>

 The definition of a numerical rating scale option that provides a numeric value with its description for evaluation scoring. 

## Syntax
<a name="aws-properties-bedrockagentcore-evaluator-numericalscaledefinition-syntax"></a>

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

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

```
{
  "[Definition](#cfn-bedrockagentcore-evaluator-numericalscaledefinition-definition)" : String,
  "[Label](#cfn-bedrockagentcore-evaluator-numericalscaledefinition-label)" : String,
  "[Value](#cfn-bedrockagentcore-evaluator-numericalscaledefinition-value)" : Number
}
```

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

```
  [Definition](#cfn-bedrockagentcore-evaluator-numericalscaledefinition-definition): String
  [Label](#cfn-bedrockagentcore-evaluator-numericalscaledefinition-label): String
  [Value](#cfn-bedrockagentcore-evaluator-numericalscaledefinition-value): Number
```

## Properties
<a name="aws-properties-bedrockagentcore-evaluator-numericalscaledefinition-properties"></a>

`Definition`  <a name="cfn-bedrockagentcore-evaluator-numericalscaledefinition-definition"></a>
 The description that explains what this numerical rating represents and when it should be used.   
*Required*: Yes  
*Type*: String  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`Label`  <a name="cfn-bedrockagentcore-evaluator-numericalscaledefinition-label"></a>
 The label or name that describes this numerical rating option.   
*Required*: Yes  
*Type*: String  
*Minimum*: `1`  
*Maximum*: `100`  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`Value`  <a name="cfn-bedrockagentcore-evaluator-numericalscaledefinition-value"></a>
 The numerical value for this rating scale option.   
*Required*: Yes  
*Type*: Number  
*Minimum*: `0`  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

# AWS::BedrockAgentCore::Evaluator RatingScale
<a name="aws-properties-bedrockagentcore-evaluator-ratingscale"></a>

 The rating scale that defines how the evaluator should score agent performance, either numerical or categorical. 

## Syntax
<a name="aws-properties-bedrockagentcore-evaluator-ratingscale-syntax"></a>

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

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

```
{
  "[Categorical](#cfn-bedrockagentcore-evaluator-ratingscale-categorical)" : [ CategoricalScaleDefinition, ... ],
  "[Numerical](#cfn-bedrockagentcore-evaluator-ratingscale-numerical)" : [ NumericalScaleDefinition, ... ]
}
```

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

```
  [Categorical](#cfn-bedrockagentcore-evaluator-ratingscale-categorical): 
    - CategoricalScaleDefinition
  [Numerical](#cfn-bedrockagentcore-evaluator-ratingscale-numerical): 
    - NumericalScaleDefinition
```

## Properties
<a name="aws-properties-bedrockagentcore-evaluator-ratingscale-properties"></a>

`Categorical`  <a name="cfn-bedrockagentcore-evaluator-ratingscale-categorical"></a>
 The categorical rating scale with named categories and definitions for qualitative evaluation.   
*Required*: No  
*Type*: Array of [CategoricalScaleDefinition](aws-properties-bedrockagentcore-evaluator-categoricalscaledefinition.md)  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`Numerical`  <a name="cfn-bedrockagentcore-evaluator-ratingscale-numerical"></a>
 The numerical rating scale with defined score values and descriptions for quantitative evaluation.   
*Required*: No  
*Type*: Array of [NumericalScaleDefinition](aws-properties-bedrockagentcore-evaluator-numericalscaledefinition.md)  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

# AWS::BedrockAgentCore::Evaluator Tag
<a name="aws-properties-bedrockagentcore-evaluator-tag"></a>

 A key-value pair for tagging the evaluator. 

## Syntax
<a name="aws-properties-bedrockagentcore-evaluator-tag-syntax"></a>

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

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

```
{
  "[Key](#cfn-bedrockagentcore-evaluator-tag-key)" : String,
  "[Value](#cfn-bedrockagentcore-evaluator-tag-value)" : String
}
```

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

```
  [Key](#cfn-bedrockagentcore-evaluator-tag-key): String
  [Value](#cfn-bedrockagentcore-evaluator-tag-value): String
```

## Properties
<a name="aws-properties-bedrockagentcore-evaluator-tag-properties"></a>

`Key`  <a name="cfn-bedrockagentcore-evaluator-tag-key"></a>
The key name of the tag. You can specify a value that's 1 to 128 Unicode characters in length and can't be prefixed with `aws:`. digits, whitespace, `_`, `.`, `:`, `/`, `=`, `+`, `@`, `-`, and `"`.  
For more information, see [Tag](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-resource-tags.html).  
*Required*: Yes  
*Type*: String  
*Minimum*: `1`  
*Maximum*: `128`  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`Value`  <a name="cfn-bedrockagentcore-evaluator-tag-value"></a>
The value for the tag. You can specify a value that's 1 to 256 characters in length. You can use any of the following characters: the set of Unicode letters, digits, whitespace, `_`, `.`, `/`, `=`, `+`, and `-`.  
For more information, see [Tag](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-resource-tags.html).  
*Required*: Yes  
*Type*: String  
*Minimum*: `0`  
*Maximum*: `256`  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)