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Agentic UI with Open Standards: AG-UI, A2UI, an...
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Manfred Steyer
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November 10, 2026
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Agentic UI with Open Standards: AG-UI, A2UI, and MCP Apps – When Do You Need Which? @OOP Focus Day 2026, Online
Manfred Steyer
PRO
November 10, 2026
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Transcript
Mastertextformat bearbeiten • Textmasterformat bearbeiten • Zweite Ebene Agentic UI
with Open Standards: AG-UI, A2UI, and MCP Apps - When Do You Need Which? ANGULARarchitects.io
Mastertextformat bearbeiten • Textmasterformat bearbeiten • Zweite Ebene Let's imagine
a "Killer App" … 2
Mastertextformat bearbeiten • Textmasterformat bearbeiten • Zweite Ebene VisiCalc, 1979
3
Mastertextformat bearbeiten • Textmasterformat bearbeiten • Zweite Ebene "Really, we
need to chat now?" 4
Mastertextformat bearbeiten • Textmasterformat bearbeiten • Zweite Ebene To chat
or not to chat … … that's the wrong question! 5
Mastertextformat High Level View onbearbeiten Agentic AI • Textmasterformat bearbeiten
• Zweite Ebene User Intent Iterative Autonomous Behavior Goal Tool Access 6
Mastertextformat bearbeiten • Textmasterformat bearbeiten • Zweite Ebene DEMO 7
LLM Mastertextformat bearbeiten Backend • Textmasterformat bearbeiten Agent Tools •
Zweite Ebene HTTP (SSE, Web Sockets, etc.) UI Runtime Component Tools Frontend 16
Mastertextformat bearbeiten • Textmasterformat bearbeiten • Zweite Ebene How to
communicate with the Agent? How to prevent coupling to the server stack and LLM? 19
Mastertextformat bearbeiten • Textmasterformat bearbeiten How to support • Zweite
Ebene dynamic UI as an answer from the Agent? 20
Mastertextformat bearbeiten • Textmasterformat bearbeiten How to visualize • Zweite
Ebene tools provided by other systems? 21
Mastertextformat bearbeiten Agenda 1) AG-UI: Agent Communication • Textmasterformat bearbeiten
2) A2UI: Dynamic/ Generative UI • Zweite Ebene 3) MCP Apps: Visual Tools 22
Mastertextformat About Me bearbeiten Manfred Steyer, ANGULARarchitects.io • Textmasterformat bearbeiten
• Zweite Ebene (Remote) Angular Workshops and Consulting Google Developer Expert for Angular & AI Blog, Books, Articles, and Talks about Angular 23
Mastertextformat bearbeiten • Textmasterformat bearbeiten • Zweite Ebene How to
communicate with the Agent? How to prevent coupling to the server stack and LLM? 24
Mastertextformat bearbeiten • Textmasterformat bearbeiten • Zweite Ebene AG-UI for
Agent Communication 26
Mastertextformat bearbeiten • Textmasterformat bearbeiten • Zweite Ebene 27
Mastertextformat Supported Integrations bearbeiten • LangGraph • Spring AI •
Textmasterformat bearbeiten • CrewAI • Pydantic AI • Zweite Ebene • Microsoft Agent Framework • Agno • Google ADK • LlamaIndex • AWS Strands Agents • AG2 • AWS Bedrock AgentCore • AWS Bedrock Agents • Mastra • OpenAI Agent SDK • Cloudflare Agents 28
Mastertextformat bearbeiten SDKs •• TypeScript • Java Textmasterformat bearbeiten •
Python • Rust • Zweite Ebene • Kotlin • .NET • Golang • Nim • Dart • Flowise • Langflow 29
Mastertextformat bearbeiten • Textmasterformat bearbeiten • Zweite Ebene DEMO 31
Mastertextformat bearbeiten • Textmasterformat bearbeiten How to support • Zweite
Ebene dynamic UI as an answer from the Agent? 32
Mastertextformat bearbeiten • Textmasterformat bearbeiten • Zweite Ebene 33
Mastertextformat bearbeiten • Textmasterformat bearbeiten • Zweite Ebene A2UI: Dynamic
UI 34
Mastertextformat bearbeiten • Textmasterformat bearbeiten • Zweite Ebene 35
Mastertextformat A2UI Example bearbeiten { "id": "root", "children": ["headline", "name",
"..."] } • Textmasterformat bearbeiten { • Zweite Ebene "id": "headline", "component": "Text", "text": "## Passenger", } { "id": "name", "component": "Text", "variant": "body" "text": { "@path": "/passenger/name" } } 36
Mastertextformat A2UI Express Example bearbeiten <a2ui> • Textmasterformat bearbeiten root
= Column([ Text("## Passenger"), Text($/passenger/name, "body") ]) • Zweite Ebene </a2ui> 37
Mastertextformat bearbeiten Catalogs • Basic Catalog • Textmasterformat bearbeiten https://a2ui.org/reference/components/
• Zweite Ebene • Custom Catalogs: Components + Functions + Metadata 38
Mastertextformat bearbeiten Renderer • React • Textmasterformat bearbeiten • Lit
(Web Components) • Zweite Ebene • Angular • Flutter • Dart • Android • SwiftUI, iOS 43
Mastertextformat bearbeiten • Textmasterformat bearbeiten • Zweite Ebene DEMO 44
Mastertextformat bearbeiten • Textmasterformat bearbeiten How to useEbene tools provided
by • Zweite other systems? 45
Mastertextformat bearbeiten • Textmasterformat bearbeiten • Zweite Ebene MCP Apps
46
Mastertextformat MCP Apps bearbeiten • Textmasterformat bearbeiten Visualize Tools Provides
incl. Results • Zweite Ebene Client Code Host Context: Theme, Size, … Sandbox Messaging w/ Widget 47
Mastertextformat bearbeiten • Textmasterformat bearbeiten • Zweite Ebene DEMO 48
Agentic UI with Angular Mastertextformat bearbeiten Architectures with Open Standards
• Textmasterformat bearbeiten 220+ pages, PDF, EPUB • Zweite Ebene Regular Free Updates! agentic-angular.com 49
Mastertextformat bearbeiten Conclusion • Textmasterformat bearbeiten Agentic AI/UI • Zweite
Ebene • Intent • Autonomy • Tools Standards • AG-UI • A2UI • MCP Apps Tactics • JSON Schema • Processing Messages (Text, Widgets, Tools) 50
Mastertextformat bearbeiten • Textmasterformat bearbeiten • Zweite Ebene Let's build
the next "Killer App" … 51
Mastertextformat bearbeiten Manfred Steyer •[LinkedIn, Textmasterformat bearbeiten Twitter, Facebook] Manfred
Steyer [web] ANGULARarchitects.io • Zweite Ebene Slides, Examples, Book @ Manfred Steyer 52