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PopUI

PopUI

Public
kelnishi/PopUI

Enhances macOS Claude Desktop with a bi-directional Model Context Protocol bridge that enables real-time collaborative UX by creating, updating, and interacting with dynamic visual interfaces for seamless user and AI interaction.

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0 tools
May 30, 2025
Updated Jun 4, 2025

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PopUI - Collaborative UX for Claude Desktop

Platform Claude Desktop

Overview

PopUI is a companion desktop app for macOS that gives Claude Desktop new tools.

Leveraging Claude's ability to create user interfaces, PopUI creates a bi-directional bridge to a visual context.

  • Claude creates and automatically displays a user interface (similar to artifacts)
  • Claude can read changes done in the UI and use the UI as a visual context
  • Claude can also push changes to the UI, visually updating it for the user
  • The UI can send events and text back to chat, obviating the need for keyboard input in the loop

Collaborative UX

How is this different from Artifacts?

PopUI closes the interaction loop. While Claude Artifacts can generate interactive UI elements, any events or changes that happen in them are trapped outside of the chat conversation. With PopUI, Claude has tools to interrogate and manipulate the external state, allowing Claude to build further conversation on top of that shared context.

Realtime visual context

PopUI also gives the Claude and the user the ability to receive and manipulate visual context.

Some examples:

  • Instantly build control panels for tweaking and refining values in the chat
  • Talk to Claude about colors with a color picker with swatches.
  • Talk to Claude about a physical layout
  • Play turn-based games with Claude on a shared gameboard
  • Give Claude a sense of time with a real-time wall clock
  • Give Claude a literal face to express its emotions during the chat

Installation

Just download the latest release and launch the app.

Automatic SSE Proxy to Claude Desktop

PopUI provides all its dependencies to function, even the MCP gateway for Claude! The first time you launch PopUI, you'll be asked to install into Claude Desktop. After this, PopUI will be launched by Claude Desktop and automatically connected as an MCP server.

You can access all the created user interfaces from the settings window or from the menubar icon.

Sponsorship & Collaboration

PopUI was my MCP hackathon entry.

If you like it, please consider supporting me through sponsorship or work opportunities.

My Apple Developer membership cost $100/year 💸 Oh for codesign...

Sponsor me or connect with me on LinkedIn if you're interested in collaborating!

⭐Stars⭐ are always appreciated!

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