Jev: Is This Tool Call Ready?

Why watch

A developer tutorial demonstrating how to use AWS Jev model as a semantic classifier within the Strands Interventions API to catch bad tool calls before they execute. Shows how to create an InterventionHandler with before_tool_call that sends conversation context and proposed tool calls to Jev for classification on intent matching, missing information, argument grounding, and Prematurity. The demo uses a single file with one simple tool and incomplete user request to clearly show the evaluation flow: model proposes tool → Jev classifies → Python policy decides → intervention returns Guide or Proceed.