AWS Bedrock Knowledge Base Retriever

​

Node Details

• Name: awsBedrockKBRetriever
• Type: AWSBedrockKBRetriever
• Version: 1.0
• Category: Retrievers

​

Base Classes

• AWSBedrockKBRetriever
• BaseRetriever

​

Credentials

• Credential Name: awsApi
• Fields:
  • AWS Key
  • AWS Secret
  • AWS Session Token (optional)

​

Input Parameters

1. Region (required)
   • Type: Async Options
   • Default: us-east-1
   • Description: AWS region where the Knowledge Base is located
2. Knowledge Base ID (required)
   • Type: String
   • Description: Unique identifier for the AWS Bedrock Knowledge Base
3. Query (optional)
   • Type: String
   • Description: Query to retrieve documents from the retriever. If not specified, the user’s question will be used
   • Accepts variables
4. TopK (optional)
   • Type: Number
   • Default: 5
   • Description: Number of chunks to retrieve
5. SearchType (optional)
   • Type: Options
   • Options: HYBRID, SEMANTIC
   • Description: Knowledge Base search type. If not specified, the default will be used
6. Filter (optional)
   • Type: String
   • Description: Knowledge Base retrieval filter. Requires specific syntax as per AWS documentation

​

Functionality

​

Use Cases

• Question-answering systems that need to retrieve relevant information from large knowledge bases
• Information retrieval systems that require access to specific AWS Bedrock Knowledge Bases
• Applications that need to integrate AWS Bedrock’s Knowledge Base capabilities for enhanced search and retrieval functionalities

​

Notes

• The node supports both HYBRID and SEMANTIC search types, allowing for flexible querying based on the use case
• Filters can be applied to refine the search results, but require adherence to AWS documentation for proper syntax
• The number of retrieved chunks can be customized using the TopK parameter
• AWS