Need help connecting to AWS bedrock knowledge base

Feature Requests
1

Use case

In my chatbot workflow I want to call AWS bedrock knowledge base to get RAG data. I want to use the “retrieve” API endpoint.

The problem

When I try to use http request node with AWS credentials, I get authentication error. From the docs of n8n I read that currently the AWS credentials support various AWS services, including “AWS Bedrock Chat Model” but not AWS bedrock knowledgeBase

The output returned by http request node

403 - “{"message":"Missing Authentication Token"}”

As a workaround I called an AWS lambda that calls AWS bedrock knowledge base, but I wonder if there is a way to call it directly from n8n, and if not, would love to have it developed

Thanks!