MCP Apps: The Spec Behind Imagine, ChatGPT Apps and Shopify | Liad Yosef & Ido Salomon

🔥 Every interactive UI inside Claude, ChatGPT and Cursor runs on one spec: MCP Apps. ⚡ It's live in millions of Shopify stores, it powers Claude's Imagine - and it takes the user journey away from your app. What's inside: 🔹 How a server returns a live UI component instead of text - SDK, sandbox, message flow 🔹 Why apps no longer own the user journey: the agent assembles the UI from atoms 🔹 The distribution math: 800M weekly users, 170x the App Store at launch, one codebase 🎙 Liad Yosef is a software architect and AI lead. He's the co-builder of MCP-UI, co-author and maintainer of MCP Apps on the MCP Steering Committee, and co-creator of GitMCP. Previously AI Lead in Shopify's CEO office, leading agentic interfaces; now co-founder and CTO at Era Labs, building human-agentic interfaces. Connect with Liad: 👉 https://twitter.com/liadyosef 👉 https://linkedin.com/in/liadyosef See his open-source work: 👉 https://github.com/liady 🎙 Ido Salomon is an AI lead and software architect. He's the creator of AgentCraft and MCP-UI, co-creator and maintainer of MCP Apps on the MCP Steering Committee, and co-creator of GitMCP. Previously an architect leading end-user AI at Palo Alto Networks. Connect with Ido: 👉 https://twitter.com/idosal1 👉 https://linkedin.com/in/ido-salomon See his open-source work: 👉 https://github.com/idosal 📝 Talk: MCP Apps – the Next Web | Liad Yosef & Ido Salomon This talk was recorded at JSNation Amsterdam 2026: 🔗 https://jsnation.com/?utm_source=youtube&utm_medium=LiadYosef_IdoSalomon 📌 Follow the link to watch the full version of all the conference talks, QnA’s with speakers and hands-on workshop recordings: 🔗 https://gitnation.com/events/jsnation-2026?utm_source=youtube&utm_medium=LiadYosef_IdoSalomon 🕐 Timestamps: 00:00 - Intro 00:54 - Your 20% Off 🫣 01:17 - Text is the worst interface ever built 02:31 - The protocol that saved 20 years of UX and how Shopify bet early 05:18 - How UI actually travels over MCP, and why it talks back 06:53 - Seeing is believing: PostHog, and Claude's Imagine out of thin air 10:44 - Break the web into atoms - your app no longer owns the user journey 13:48 - What the spec still can't do, and what's coming next 17:03 - 800M weekly users: one codebase, 170x the App Store at launch 18:36 - How to ship your first MCP App - and how to change the spec 20:09 - We're not at Jarvis yet, but the monolith is already breaking 📌 We’ve hidden a secret code for 20% off your next event. Join our upcoming conferences! 💫 JSNation US 2026 Nov 16 & 19, 2026 (NewYork & Online) 🔗 https://jsnation.us/?utm_source=youtube&utm_medium=LiadYosef_IdoSalomon 💫 React Summit US 2026 Nov 17 & 20, 2026 (NewYork & Online) 🔗 https://reactsummit.us/?utm_source=youtube&utm_medium=LiadYosef_IdoSalomon 💫 AI Coding Summit Nov 16 & 17, 2026 (New York & Online) https://aicodingsummit.com/nyc/?utm_source=youtube&utm_medium=LiadYosef_IdoSalomon and more! 🚀 Check out all the upcoming events from GitNation: 🔗 https://gitnation.com/events?utm_source=youtube&utm_medium=LiadYosef_IdoSalomon Don't forget to use INSIDER20 promo code for 20% off on tickets. #JSNation #GitNation #MCP #MCPApps #MCPUI #ModelContextProtocol #AgenticWeb #AgenticAI #GenerativeUI #AIAgents #LLM #AITools #WebDevelopment #WebDev #SoftwareArchitecture #DeveloperTools #OpenSource #API #TypeScript #JavaScript #React #FrontendDevelopment #UIDevelopment #AIEngineering #ChatGPT #Claude #Cursor #VSCode #Shopify #PostHog #TechTalk #ConferenceTalk