What is swift-mcp-gui CLAUDE.md?

Project instructions for building and running a macOS app that lets an agent control the graphical interface through the Model Context Protocol, a standard way for software tools to communicate with AI agents.

Use it when developing or releasing the Swift app, running its executable, managing dependencies, or working with mouse, keyboard, scrolling, screen-size, and pixel-color controls.

It gives developers the commands and project structure needed to build, release, install, update, and clean the app consistently.

How NakaokaRei/swift-mcp-gui configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to NakaokaRei/swift-mcp-gui. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/NakaokaRei/swift-mcp-gui/master/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/NakaokaRei/swift-mcp-gui

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/instructions/nakaokarei/swift-mcp-gui/claude-md/github.svg)](https://agentmods.dev/instructions/nakaokarei/swift-mcp-gui/claude-md)

Your own site

<a href="https://agentmods.dev/instructions/nakaokarei/swift-mcp-gui/claude-md"><img src="https://agentmods.dev/badge/instructions/nakaokarei/swift-mcp-gui/claude-md/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/instructions/nakaokarei/swift-mcp-gui/claude-md"><img src="https://agentmods.dev/badge/instructions/nakaokarei/swift-mcp-gui/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 616 This file is loaded in full into every session.

When invoked 616 The same file — it is already loaded in full.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

Model	Per session	Once invoked
Fable 5.1	$0.00616	$0.00616
Opus 5.5	$0.00246	$0.00246
Sonnet 5.5	$0.00123	$0.00123
Haiku 4.5	$0.00062	$0.00062

Measured 20d ago against content hash b2cf2756c609, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

swift-mcp-gui CLAUDE.md scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 20d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

CLAUDE.md · 80 lines

How it starts

The opening of the file, as written. The whole thing — 80 lines — stays where its author put it; the contents beside it link to each section on GitHub.

CLAUDE.md

This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.

Build and Development Commands

This is a Swift Package Manager project for macOS GUI automation via MCP (Model Context Protocol).

# Build the project
swift build

# Build for release (optimized)
swift build -c release

# Run the executable
swift run swift-mcp-gui

# Install the executable system-wide (experimental)
swift package experimental-install

# Uninstall the executable
swift package experimental-uninstall swift-mcp-gui

# Reinstall (uninstall then install) - Run this after implementing new features
swift package experimental-uninstall swift-mcp-gui && swift package experimental-install

# Clean build artifacts
swift package clean

# Update dependencies
swift package update

Architecture Overview

This project implements an MCP server that provides GUI automation capabilities for macOS through these tools:

moveMouse: Move cursor to x,y coordinates
mouseClick: Perform mouse clicks (left/right)
scroll: Scroll in any direction
sendKeys: Send keyboard shortcuts
getScreenSize: Get the display dimensions
getPixelColor: Get color of a pixel at x,y
captureScreen: Capture full screen as base64 PNG
captureRegion: Capture a region as base64 PNG
saveScreenshot: Save screenshot to file

Key Components

main.swift: MCP server initialization and startup
Server+Extension.swift: Extends MCP Server with waitForDisconnection() to keep the server running
ToolRegistry.swift: Manages tool registration and execution
Tools/:
- Mouse/: Mouse control tools (moveMouse, mouseClick)
- Screen/: Screen capture and scroll tools
- Keyboard/: Keyboard input tools (sendKeys)

Dependencies

mcp-swift-sdk: MCP protocol implementation
- Repository: https://github.com/modelcontextprotocol/swift-sdk
SwiftAutoGUI (v1.0.0+): macOS automation library
- Repository: https://github.com/NakaokaRei/SwiftAutoGUI
- Documentation: https://nakaokarei.github.io/SwiftAutoGUI/documentation/swiftautogui/

Read the full file on GitHub · 80 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

20d ago Changed · +1 lines · +8 tokens per session b2cf2756c609
2mo ago First seen · 79 lines · 608 tokens per session scan A 9f8777faceca

Subscribe to this mod's changes

swift-mcp-gui CLAUDE.md is an instructions file published in the GitHub repository NakaokaRei/swift-mcp-gui (61 stars, last pushed 21d ago), licensed MIT. It adds 616 tokens to every session, about $0.0025 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

automation mcp mcp-server swift

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swift-mcp-gui: Instructions file for Claude Code