Vibe Check: There's no agent without the harness

​The model gets the credit. The harness does the engineering. Runtime, memory, identity, tool access, observability: strip those away and the model is back to being a chat completion.

​Elizabeth Fuentes Leone from AWS joins Melanie and guest co-host Shubham Londhe on Vibe Check to define harness engineering as a discipline, using AWS Bedrock AgentCore as the working example. Live demo, real code, and a frame you can apply to any agent stack.