MCP Apps in Action: Chat Interfaces That Return Interactive Visual Content

NielsRogge · x · 2026-08-27

The author introduces MCP Apps, an extension of the MCP protocol that lets chat interfaces return interactive, visual content. As a demo, he uses the @excalidraw MCP App to visualize papers directly in the chat—just say "visualize it" at the linked site to try it. This shows MCP evolving from plain tool calls toward rich interactive UI.

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