How are you enforcing runtime policy and trust boundaries in agent systems today?

I’m seeing more agent projects move beyond model safety and toward runtime controls for actions, tool calls, identity, and isolation. We’re hosting a free online discussion on this topic with Imran Siddique, maintainer of Microsoft’s open source Agent Governance Toolkit. I’d love to hear how others here are thinking about agent runtime governance, especially in open source stacks. Event link in case it is useful: Building Governed AI Agents: Microsoft Agent Governance Toolkit, Thu, May 7, 2026, 7:00 PM | Meetup