AG-UI and Generative UI Specs
Several recently released specs have enabled agents to return generative UI, increasing the power and flexibility of the Agent<->User conversation. A2UI, MCP-UI, and Open-JSON-UI are all generative UI specifications. Generative UIs allow agents to respond to users not only with text but also with dynamic UI components.
Despite the naming similarities, AG-UI is not a generative UI specification — it’s a User Interaction protocol that provides the bi-directional runtime connection between the agent and the application.
AG-UI natively supports all of the above generative UI specs and allows developers to define their own custom generative UI standards as well.