Category 8 of 9

# Present Show a human the result

Classic-web analog: the browser

How an agent renders output or a live interaction to a person.

Few standards exist for this step yet. 3 found as of 2026-09-07. The gap is the finding; see [blanks](/methodology/#blanks).

- [A2UI (Agent to UI) Protocol](/protocols/a2ui/) A2UI

- [Agent-User Interaction Protocol](/protocols/ag-ui/) AG-UI

- [MCP Apps](/protocols/mcp-apps/) MCP Apps