AG-UI for Product Managers: Building Agents People Can Work With

AG-UI, or Agent-User Interaction Protocol, is presented as a standard for connecting AI agents with user-facing applications through structured events that communicate agent activity, shared state, tool calls, user decisions, and errors. Using an appointment-rescheduling example, the discussion identifies product decisions around what context an agent receives, how progress and failures are displayed, how users provide input, when approvals are required, and which frontend and backend actions agents may request while applications retain authorization and business-rule enforcement. A common protocol can help teams reuse interface patterns and support multiple agent frameworks, although integrations still require testing. The piece also argues that teams should evaluate complete user-agent trajectories rather than treating successful tool calls as sufficient, using records of user context, approvals, agent requests, and saved outcomes to detect failures such as booking an unapproved time. It recommends starting with a single existing workflow, defining clear acceptance criteria and recovery behavior, then using observed user interactions to improve the agent experience.

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