How can I ensure my Bedrock agent only uses my knowledge base for queries?

To make your Bedrock agent rely solely on your knowledge base, follow these steps closely: 1) Access your agent in Amazon Bedrock. 2) Disable any fallback behavior that allows it to use foundation models. 3) Ensure your knowledge base is correctly attached. 4) Draft a strict behavior policy in the system prompt that clearly states it should only answer based on the linked knowledge base. 5) Test it out with queries that aren’t available in your KB; it should return a message saying it doesn’t have information. Remember, even with these settings, some models may still generate unexpected outputs, so tweaking your prompts can be helpful.

Another thing you might want to try is refining your system prompts to include strong instructions like, 'DO NOT generate responses unless you have information from the knowledge base. If you can't provide an answer, just say you don’t have that information.' This helps the agent understand the boundaries better. Just make sure your knowledge base is properly linked within the agent’s settings and that the fallback option remains disabled. Testing it out with questions not covered in the KB should help you verify if it's working as intended!

It sounds like your agent might be falling back on responses from the foundation models when it doesn't find what it's looking for in the knowledge base. To fix this, you should look into your agent’s configuration settings in the Amazon Bedrock console. Specifically, disable the fallback option that allows it to use the foundation model if there's no answer in the KB. You can also enhance your system prompt to instruct it to strictly use the KB and communicate clearly when it doesn't have an answer. This way, it won’t generate responses based on incomplete information. Readers who've implemented similar strategies have found it effective.