Build and capture Xcode/SwiftUI previews for visual analysis. Use when you need to see rendered UI output, verify layouts, or inspect visual components.
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This skill allows you to build SwiftUI views and capture screenshots of their rendered output for visual analysis. It supports:
Scripts are located at ${CLAUDE_PLUGIN_ROOT}/scripts/
Auto-detects project type and uses the best approach:
"${CLAUDE_PLUGIN_ROOT}"/scripts/preview \
<path-to-file.swift> \
--output /tmp/preview.png
Capture a screenshot of whatever is currently displayed on the booted simulator.
"${CLAUDE_PLUGIN_ROOT}"/scripts/capture-simulator.sh \
--output /tmp/preview-capture.png
Fast builds by injecting a minimal PreviewHost target (handled automatically by the unified script):
"${CLAUDE_PLUGIN_ROOT}"/scripts/preview \
<path-to-file.swift> \
--project <path.xcodeproj> \
--output /tmp/preview.png
Auto-detected from Package.swift in parent directories:
"${CLAUDE_PLUGIN_ROOT}"/scripts/preview \
<path-to-file.swift> \
--output /tmp/preview.png
Build a standalone Swift file with system frameworks only:
"${CLAUDE_PLUGIN_ROOT}"/scripts/preview \
<path-to-file.swift> \
--output /tmp/preview.png
When the user invokes /preview, follow this workflow:
Identify the target: Determine what needs to be previewed:
Build and capture: Use the appropriate script based on the target
Read and analyze: Use the Read tool to view the captured PNG image
Report findings: Describe what you see in the preview, including:
The user can specify:
file: Path to a Swift file to previewproject: Path to an Xcode projectworkspace: Path to an Xcode workspacescheme: Build scheme namesimulator: Simulator to use (default: "iPhone 17 Pro")wait: Seconds to wait before capture (default: 3)User: /preview ContentView.swift
User: /preview --project MyApp.xcodeproj --scheme MyApp
User: /preview --capture-only
If the build fails:
If no simulator is booted:
After capturing, always:
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When the user wants to A/B test App Store product page elements to improve conversion rate. Also use when the user mentions "A/B test", "product page optimization", "test my screenshots", "test my icon", "conversion rate optimization", "CPP", or "custom product pages". For screenshot design, see screenshot-optimization. For metadata optimization, see metadata-optimization.
中文简介正在准备中。当前显示原文说明。
Discover and configure Bluetooth and Wi-Fi accessories using AccessorySetupKit. Use when presenting a privacy-preserving accessory picker, defining discovery descriptors for BLE or Wi-Fi devices, handling accessory session events, migrating from CoreBluetooth permission-based scanning, or setting up accessories without requiring broad Bluetooth permissions.
中文简介正在准备中。当前显示原文说明。
Implement, review, or improve Live Activities and Dynamic Island experiences in iOS apps using ActivityKit. Use when building real-time updating widgets for the Lock Screen and Dynamic Island — delivery tracking, sports scores, ride-sharing status, workout timers, media playback, or any time-sensitive information that updates in real time. Also use when working with ActivityKit, ActivityAttributes, Activity lifecycle (request/update/end), Dynamic Island layouts (compact/minimal/expanded), push-to-update Live Activities, or Lock Screen live widgets.
中文简介正在准备中。当前显示原文说明。
Measure ad effectiveness with privacy-preserving attribution using AdAttributionKit. Use when registering ad impressions, handling attribution postbacks, updating conversion values, implementing re-engagement attribution, configuring publisher or advertiser apps, or replacing SKAdNetwork with AdAttributionKit for ad measurement.
中文简介正在准备中。当前显示原文说明。
Implement AlarmKit alarms and countdown timers for iOS and iPadOS with Lock Screen, Dynamic Island, and Apple Watch system UI. Covers AlarmManager scheduling, AlarmAttributes and AlarmPresentation, AlarmButton stop and snooze actions, authorization, state observation, and Live Activity integration. Use when building wake-up alarms, countdown timers, or alarm-style alerts that need Apple's system alarm experience.
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When the user wants to optimize their Google Play Store listing — title, short description, full description, keywords, ratings, or Play Store-specific features. Use when the user mentions "Google Play", "Android", "Play Store", "Play Console", "short description", "full description indexed", "Google Play ASO", or wants Google Play-specific keyword, creative, or ratings strategy. For iOS App Store optimization, see aso-audit and metadata-optimization.
中文简介正在准备中。当前显示原文说明。