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Ido Salomon 2025-11-21 19:33:22 +02:00
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# SEP-0000: MCP Apps: Interactive User Interfaces for MCP
**Track:** Extensions
**Authors:** Ido Salomon, Liad Yosef, Olivier Chafik, Jonathan Hefner, Anton Pidkuiko, Nick Cooper, Bryan Ashley, Alexei Christakis
**Authors:** Ido Salomon, Liad Yosef, Olivier Chafik, Jerome Swannack, Jonathan Hefner, Anton Pidkuiko, Nick Cooper, Bryan Ashley, Alexei Christakis
**Status:** Draft
**Created:** 2025-11-21
@ -13,7 +13,7 @@ This SEP proposes an extension (per SEP-1724) to MCP that enables servers to del
MCP lacks a standardized way for servers to deliver rich, interactive user interfaces to hosts. This gap blocks many use cases that require visual presentation and interactivity that goes beyond plain text or structured data. As more hosts adopt this capability, there's a growing risk of fragmentation and interoperability challenges.
MCP-UI has demonstrated the viability and value of MCP apps built on UI resources and serves as a community playground for the UI spec and SDK. Fuelled by a dedicated community, it developed the bi-directional communication model and the HTML, external URL, and remote DOM content types. MCP-UI's adopters, including hosts and providers such as Postman, HuggingFace, Shopify, Goose, and ElevenLabs, have provided critical insights and contributions to the community.
[MCP-UI](https://mcpui.dev/) has demonstrated the viability and value of MCP apps built on UI resources and serves as a community playground for the UI spec and SDK. Fuelled by a dedicated community, it developed the bi-directional communication model and the HTML, external URL, and remote DOM content types. MCP-UI's adopters, including hosts and providers such as Postman, HuggingFace, Shopify, Goose, and ElevenLabs, have provided critical insights and contributions to the community.
OpenAI's Apps SDK, launched in November 2025, further validated the demand for rich UI experiences within conversational AI interfaces. The Apps SDK enables developers to build rich, interactive applications inside ChatGPT using MCP as its backbone.