Use decision models with Amazon Bedrock AgentCore Evaluations
This post explains how to integrate decision models like Jev and Strands Decider 2B into Amazon Bedrock AgentCore Evaluations via code-based evaluators. It covers the trade-offs between decision models and LLM-as-a-judge, provides a step-by-step validation procedure, and recommends a cascade pattern where decision models screen turns and escalate low-confidence cases to built-in evaluators. The accompanying code sample demonstrates an HR Assistant agent with deterministic, built-in, and decision-model evaluators.
Why it matters: Provides a concrete, recent AWS tutorial with practical guidance on using decision models for agent evaluation, including validation steps and architecture, valuable for developers building AI evaluation pipelines.