SimAgentation

Overview

SimAgentation lets you annotate a running iOS simulator in your browser and send those notes to your coding agent. You click an element or draw a box over an area, write a note, and the agent receives it with element details and a screenshot. The page is laid out like Xcode's Device Hub.

Features

• Design Mode freezes the screen and loads the accessibility tree so you can pick elements
• MCP server with seven tools for pending annotations, watching for new ones and marking them resolved
• In Claude Code, annotations can arrive in a running session as you send them
• Copy all pending annotations as Markdown to paste anywhere
• Supports the iPhone Duo foldable in Xcode 27.1

Requirements

• macOS on Apple silicon
• Xcode 26 (27.1 for iPhone Duo)

Install

1. Install with Homebrew and open it

   brew install lcandy2/tap/sim-agentation
   sim-agentation serve --open

2. Claude Code plugin

   /plugin marketplace add lcandy2/sim-agentation
   /plugin install sim-agentation@sim-agentation

3. Or add just the MCP server

   claude mcp add sim-agentation -- sim-agentation mcp

Example

Press Shift Command D, click a misaligned button, note "this should line up with the title" and your agent picks it up and fixes the layout.