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Avatar for Glenn Reyes Glenn Reyes
March 11, 2026
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Dutch AI Conference - Building Interactive Chat Interfaces with MCP-UI

Avatar for Glenn Reyes

Glenn Reyes

March 11, 2026
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Transcript

  1. @glnnrys · glennreyes.com Building Interactive Chat Interfaces with MCP Apps

  2. Glenn Reyes @glnnrys · glennreyes.com Engineer, Speaker & Teacher Sta

    ff Frontend Engineer @ Adverity

  3. @glnnrys

  4. @glnnrys Have you tried … shopping with an AI?

  5. @glnnrys

  6. @glnnrys

  7. @glnnrys

  8. @glnnrys THE TEXT WALL PROBLEM

  9. @glnnrys — Shopify Product Team “A product isn't just a

    SKU and price.”

  10. @glnnrys

  11. @glnnrys Seat 12A is available, it's a window seat, $45

    extra.

  12. @glnnrys

  13. @glnnrys We had this fi gured out in 2010

  14. @glnnrys Why are we throwing away decades of UX expertise?

  15. @glnnrys Part 1: The Problem ✓ Part 2: The Philosophy

    →

  16. @glnnrys AI Agents Traditional UIs 🤖 vs. 🖥

  17. @glnnrys AI Agent Intelligence + Traditional UI Excellence = ?

  18. @glnnrys “Don't throw away decades of UX expertise.”

  19. @glnnrys

  20. @glnnrys Accessibility

  21. @glnnrys

  22. @glnnrys

  23. @glnnrys Core Principles • Don't abandon UX expertise • Right

    tool for the right job • Accessibility through adaptation • Future-proof interaction pa tt erns

  24. @glnnrys Part 1: The Problem ✓ Part 2: The Philosophy

    ✓ Part 3: The Solution →

  25. @glnnrys MCP-UI extended the Model Context Protocol to enable AI

    agents to return fully interactive UI components — and became the foundation for MCP Apps, the first official MCP extension.

  26. @glnnrys

  27. @glnnrys

  28. @glnnrys INTENT-BASED ARCHITECTURE

  29. @glnnrys From Experiment to Standard • Nov 2025: MCP-UI proposed

    as extension • Nov 2025: OpenAI launches Apps SDK • Jan 26, 2026: MCP Apps goes o ff icial • Shipped in: Claude, ChatGPT, VS Code, Goose • Launch partners: Figma, Asana, Slack, Salesforce, Canva

  30. @glnnrys Who owns the state? The UI component? The AI

    agent? Both? (chaos!)

  31. @glnnrys

  32. @glnnrys

  33. @glnnrys The agent remains the source of truth.

  34. @glnnrys

  35. @glnnrys 3 Ways to Deliver UI 1. Inline HTML 2.

    Remote Resources 3. Remote DOM

  36. @glnnrys Inline HTML

  37. @glnnrys Remote Ressources

  38. @glnnrys Remote DOM

  39. @glnnrys remote-dom github.com/Shopify/remote-dom

  40. @glnnrys

  41. @glnnrys

  42. @glnnrys

  43. @glnnrys

  44. @glnnrys

  45. @glnnrys

  46. @glnnrys

  47. @glnnrys What else could use MCP-UI?

  48. @glnnrys

  49. @glnnrys MCP Apps is official The fi rst o ff

    icial MCP extension. Shipped in production.

  50. @glnnrys Thank you! @glnnrys · glennreyes.com Glenn Reyes