Google Developers Blog

Historical synthesis preserved from the August 2026 source captures. The September reconciliation checks identifiers and provenance; time-sensitive claims have not been freshly re-verified.

Google Developers Blog is Google's developer-facing publication represented in this wiki by the A2UI v0.9 announcement about portable, framework-agnostic generative UI.

Key facts

• Type: Developer publication
• Source role: Publisher of "A2UI v0.9: The New Standard for Portable, Framework-Agnostic Generative UI" ^[src-038]
• Author/team: Google A2UI Team ^[src-038]
• Publication date: 2026-04-17 ^[src-038]
• Concepts introduced here: A2ui, Generative Ui, Component Catalog Driven Ui, Agent To Agent Protocol ^[src-038]
• Agent architecture coverage: In ^[src-101], the blog shows how Google Agent Development Kit can support Long Running Agents with durable state machines, persistent sessions, event-driven dormancy, and multi-agent delegation.
• Agent UI coverage: In ^[src-115], the blog explains how A2UI and MCP Apps can be combined through three patterns for native and custom agentic UI.
• Agent discovery coverage: In ^[src-116], the blog announces Agentic Resource Discovery as a federated discovery and verification layer for tools, skills, agents, and MCP servers.

What it adds

The post extends the wiki's agent coverage from tools and orchestration into user interfaces. It presents A2UI as a standard that lets local or remote agents declare UI intent while client applications render the result with their existing component catalogs across web, mobile, and other surfaces ^[src-038].

Related concepts

• A2ui
• Generative Ui
• Component Catalog Driven Ui
• Agent To Agent Protocol
• Model Context Protocol
• MCP Apps
• Agentic Resource Discovery
• Google Agent Development Kit
• Long Running Agents
• Harness Engineering

2026-06-22 update

• Google Developers Blog adds an A2A anniversary/update piece that frames Agent To Agent Protocol as infrastructure for collaborative agents and task handoffs ^[src-127].

2026-08-06 update

• The blog describes the 2026-07-28 MCP specification release candidate as a move to self-contained requests, standard HTTP routing headers, explicit caching, and resumable multi-round-trip interactions ^[src-407].
• The release-candidate label matters: production implementers should validate the exact adopted specification and SDK rather than assume the article describes an immutable final standard ^[src-407].

Source references

• ^[src-038] Google A2UI Team — "A2UI v0.9: The New Standard for Portable, Framework-Agnostic Generative UI" (2026-04-17)
• ^[src-101] Shubham Saboo and Eric Dong – "Build Long-running AI agents that pause, resume, and never lose context with ADK" (2026-05-12)
• ^[src-115] Google A2UI Team, Ido Salomon, Liad Yosef – "A2UI + MCP Apps" (2026-06-17)
• ^[src-116] Junjie Bu and Srinivas Krishnan – "Announcing the Agentic Resource Discovery specification" (2026-06-17)
• ^[src-127] Google Developers Blog – "How A2A is Building a World of Collaborative Agents" (2026-06-18)
• ^[src-407] Kurtis Van Gent and Alan Blount – "Scaling AI Agent Infrastructure with the MCP Stateless updates" (2026-08-05)