Component Catalog Driven UI

Component catalog driven UI is a generative-interface architecture where an agent selects and configures approved client components rather than inventing arbitrary new UI.

Key points

  • Google emphasizes that frontend teams already have design systems and components, so agents should dynamically use existing frontends instead of forcing a new component set [src-038].
  • In A2UI, a catalog defines the components an agent may produce, and examples can be supplied for few-shot learning [src-038].
  • The Schema Manager turns catalogs and spec versions into system instructions, then validates and repairs the LLM's JSON against the selected catalog [src-038].
  • Dynamic catalogs allow runtime switching across component schemas based on device constraints, user permissions, or client capabilities [src-038].
  • Version negotiation lets the agent choose the best A2UI spec version based on what the client supports [src-038].
  • Catalog-driven generation gives product teams a guardrail: agents can create adaptive interfaces while preserving brand, accessibility, and implementation constraints owned by the frontend [src-038].

Related entities

Related concepts

Source references

  • [src-038] Google A2UI Team — "A2UI v0.9: The New Standard for Portable, Framework-Agnostic Generative UI" (2026-04-17)

Robin Cartier perspective

This page is part of Robin Cartier's working AI knowledge graph: a practical research layer for production AI, recommendation systems, experimentation, GEO, and agentic web readiness.

The useful next step is to connect this concept back to applied product leadership and operating models.

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