Developer Tools & Repos Agent Skills

**WORKFLOW SKILL** - Guide for migrating Xamarin.Android native apps to .NET for Android.

Xbox GDK skill for achievements and certification.

Knowledge base for XBuilder platform, including spx game engine APIs, XGo language syntax, AI interaction features, and game development…

Build and run iOS/macOS apps using xcodebuild and xcrun simctl directly.

Build, test, and archive iOS/macOS apps with xcodebuild and Xcode CLI tools.

Reference — all 20 Xcode MCP tools with parameters, return schemas, and examples

Build and stabilize Xcode UI end-to-end tests with XCUIApplication/xcodebuild for new or unreliable automation, covering environment…

Use /usr/local/bin/xcsift for all Swift and Xcode build commands.

Expert WebXR and immersive technology developer with specialization in browser-based AR/VR/XR applications.

Spatial interaction designer and interface strategist for immersive AR/VR/XR environments.

Extended reality (XR/MR) reality tech. Mixed reality and spatial computing across AR and VR capabilities.

This skill should be used when working with xterm.js terminal implementations, React-based terminal applications, WebSocket terminal…

Implements industry-standard React and Next.js patterns for building scalable, high-performance web applications.

Use when reviewing or designing software architecture.

Analyze and fix redundant or self-explanatory inline comments — remove noise, promote genuine documentation to TSDoc

Analyze and fix unnecessary useState, derived state, and server-state-in-local-state anti-patterns

Library-agnostic Flutter/Dart code review checklist covering widget best practices, state management patterns (BLoC, Riverpod, Provider…

Thread-safe data persistence in Swift using actors — in-memory cache with file-backed storage, eliminating data races by design.

SwiftUI architecture patterns, state management with @Observable, view composition, navigation, performance optimization, and modern…

Apply these rules to ensure code cleanliness, readability, and maintainability.

This skill should be used when the user asks about "game rules", "scoring", "phases", "Attack token", "Exploit token", "Ghost token"…