Bedrock Guardrail L3 Construct

This construct provides a high-level abstraction for creating Amazon Bedrock Guardrails for content filtering and safety.

Features

• Content Filtering: Support for multiple content filter types (hate, sexual, violence, etc.)
• Contextual Grounding: Grounding and relevance threshold controls
• Custom Messages: Configurable blocked input/output messages
• KMS Encryption: Automatic encryption with customer-managed keys
• Flexible Configuration: Support for all guardrail filter strengths

Usage

import { BedrockGuardrailL3Construct } from '@aws-mdaa/bedrock-guardrail-l3-construct';

const guardrail = new BedrockGuardrailL3Construct(this, 'MyGuardrail', {
  guardrailName: 'my-guardrail',
  guardrailConfig: {
    description: 'Content filtering guardrail',
    contentFilters: {
      hate: {
        inputStrength: 'HIGH',
        outputStrength: 'HIGH'
      },
      sexual: {
        inputStrength: 'HIGH',
        outputStrength: 'HIGH'
      },
      violence: {
        inputStrength: 'MEDIUM',
        outputStrength: 'MEDIUM'
      }
    },
    contextualGroundingFilters: {
      grounding: 0.9,
      relevance: 0.8
    }
  },
  kmsKey: myKmsKey,
  naming: naming
});

Configuration Options

Guardrail Properties

• description: Optional description for the guardrail
• contentFilters: Content filter configurations (required)
• blockedInputMessaging: Custom message for blocked inputs
• blockedOutputsMessaging: Custom message for blocked outputs
• contextualGroundingFilters: Grounding and relevance thresholds

Content Filter Types

• hate: Hate speech detection
• sexual: Sexual content detection
• violence: Violence content detection
• insults: Insult detection
• misconduct: Professional misconduct detection
• promptAttack: Prompt injection attack detection

Filter Strengths

• LOW: Minimal filtering
• MEDIUM: Moderate filtering
• HIGH: Strict filtering

Contextual Grounding Filters

• grounding: Threshold for grounding to source material (0.0 to 1.0)
• relevance: Threshold for relevance to the query (0.0 to 1.0)

Example Configurations

Basic Content Filtering

contentFilters: {
  hate: { inputStrength: 'HIGH', outputStrength: 'HIGH' },
  sexual: { inputStrength: 'HIGH', outputStrength: 'HIGH' },
  violence: { inputStrength: 'MEDIUM', outputStrength: 'MEDIUM' }
}

Comprehensive Filtering

contentFilters: {
  hate: { inputStrength: 'HIGH', outputStrength: 'HIGH' },
  sexual: { inputStrength: 'HIGH', outputStrength: 'HIGH' },
  violence: { inputStrength: 'MEDIUM', outputStrength: 'MEDIUM' },
  insults: { inputStrength: 'LOW', outputStrength: 'LOW' },
  misconduct: { inputStrength: 'MEDIUM', outputStrength: 'MEDIUM' },
  promptAttack: { inputStrength: 'HIGH', outputStrength: 'HIGH' }
}

With Contextual Grounding

contextualGroundingFilters: {
  grounding: 0.9,  // High grounding requirement
  relevance: 0.8   // High relevance requirement
}

Dependencies

• @aws-mdaa/l3-construct
• aws-cdk-lib
• constructs