# AWS explains how to use decision models with Amazon Bedrock AgentCore Evaluations

> Original title: Use decision models with Amazon Bedrock AgentCore Evaluations

- Source: AWS Machine Learning Blog
- Published: 2026-11-04T18:46:36.000Z
- Bad Influence: https://badinfluence.news/items/yvt8nlspnn9714lluoabuf3zo
- Original: https://aws.amazon.com/blogs/machine-learning/use-decision-models-with-amazon-bedrock-agentcore-evaluations/

## Summary

AWS explains how to connect two decision model backends, TypeSafe's hosted Jev and the open-source Strands Decider 2B, to Amazon Bedrock AgentCore Evaluations through code-based evaluators. The post says decision models return calibrated probabilities over fixed answers, which suits narrow checks such as policy adherence or tool-call safety. Jev requires a TypeSafe API key, and Strands Decider requires a host running the Strands Decider server.