[Advent of Agents] Day 31: A2UI & A2A: Building the Dog Weather App

[abraha...@google.com]

Hi everyone,

Day 31 of Google's Advent of Agents — Season 2 is now live! 🌸

Stop sending raw text and start shipping interactive micro-apps directly within Gemini Enterprise using the A2UI and A2A protocols. Learn how to combine the ADK framework and Cloud Run to build a high-fidelity Dog Weather App that manages complex session states and multi-modal tool chaining.

Today's Highlights:

• Native rendering in Gemini Enterprise using declarative A2UI templates and strictly validated JSON for high-fidelity UI components.
• Seamless orchestration via the ADK framework and Cloud Run to manage deterministic flows between weather data and live image fetching.
• Advanced session management using A2A protocols to route dynamic button interactions and maintain context without deploying custom frontend code.

👉 View Day 31 Drop Here

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Happy building!
The Advent of Agents Team

© 2026 Google Cloud · Season 2 · Spring Edition