Amazon Web Services · Retrieval modes

Amazon Bedrock Managed Knowledge Base: single-shot and agentic retrieval

Amazon Bedrock Managed Knowledge Base now supports single-shot RAG and retrieval-only requests through the AgenticRetrieveStream API. The maxAgentIteration parameter, now in the range 0 to 5, selects one of three modes: passages only with no foundation model calls (0), one retrieval then one generated answer (1), or agentic multi-step planning and search (2 to 5). Setting generateResponse=true with a value of 0 returns a 4xx error, as generation needs an LLM call.