# CharlesWiltgen > Open-source publisher. Listings imported from github.com/CharlesWiltgen — credited to the original author with their license. - **Listings:** 48 - **Total installs:** 0 - **Profile:** https://agentstack.voostack.com/s/charleswiltgen - **Website:** https://github.com/CharlesWiltgen ## Published listings - [Axiom Networking](https://agentstack.voostack.com/l/skill-charleswiltgen-axiom-axiom-networking) — Skill · Free · security-reviewed — `agentstack add skill-charleswiltgen-axiom-axiom-networking` Use when implementing or debugging ANY network connection, API call, or socket. Covers URLSession, Network.framework, NetworkConnection, connection diagnostics. - [Axiom Vision](https://agentstack.voostack.com/l/skill-charleswiltgen-axiom-axiom-vision) — Skill · Free · security-reviewed — `agentstack add skill-charleswiltgen-axiom-axiom-vision` Use when implementing ANY computer vision feature — image analysis, pose detection, person segmentation, subject lifting, text recognition, barcode scanning. - [Axiom Data](https://agentstack.voostack.com/l/skill-charleswiltgen-axiom-axiom-data) — Skill · Free · security-reviewed — `agentstack add skill-charleswiltgen-axiom-axiom-data` Use when working with ANY data persistence, database, storage, CloudKit, migration, or serialization. Covers SwiftData, Core Data, GRDB, SQLite, CloudKit sync, file storage, Codable, migrations. - [Axiom Audit Energy](https://agentstack.voostack.com/l/skill-charleswiltgen-axiom-axiom-audit-energy) — Skill · Free · security-reviewed — `agentstack add skill-charleswiltgen-axiom-axiom-audit-energy` Use when the user mentions battery drain, energy optimization, power consumption audit, or pre-release energy check. - [Axiom Audit Core Data](https://agentstack.voostack.com/l/skill-charleswiltgen-axiom-axiom-audit-core-data) — Skill · Free · security-reviewed — `agentstack add skill-charleswiltgen-axiom-axiom-audit-core-data` Use when the user mentions Core Data review, schema migration, production crashes, or data safety checking. - [Axiom Design](https://agentstack.voostack.com/l/skill-charleswiltgen-axiom-axiom-design) — Skill · Free · security-reviewed — `agentstack add skill-charleswiltgen-axiom-axiom-design` Use when making design decisions, implementing HIG patterns, Liquid Glass, SF Symbols, typography, or structuring app entry points and authentication flows. - [Axiom Audit Grdb Performance](https://agentstack.voostack.com/l/skill-charleswiltgen-axiom-axiom-audit-grdb-performance) — Skill · Free · security-reviewed — `agentstack add skill-charleswiltgen-axiom-axiom-audit-grdb-performance` Use when the user mentions GRDB performance review, slow GRDB queries, app-group database setup audit, or pre-release GRDB scan. - [Axiom Media](https://agentstack.voostack.com/l/skill-charleswiltgen-axiom-axiom-media) — Skill · Free · security-reviewed — `agentstack add skill-charleswiltgen-axiom-axiom-media` Use when working with camera, photos, audio, haptics, ShazamKit, or Now Playing. Covers AVCaptureSession, PHPicker, PhotosPicker, AVFoundation, Core Haptics, audio recognition, MediaPlayer, CarPlay, MusicKit. - [Axiom Testing](https://agentstack.voostack.com/l/skill-charleswiltgen-axiom-axiom-testing) — Skill · Free · security-reviewed — `agentstack add skill-charleswiltgen-axiom-axiom-testing` Use when writing ANY test, debugging flaky tests, making tests faster, or choosing Swift Testing vs XCTest. Covers unit tests, UI tests, async testing, test architecture. - [Axiom Macos](https://agentstack.voostack.com/l/skill-charleswiltgen-axiom-axiom-macos) — Skill · Free · security-reviewed — `agentstack add skill-charleswiltgen-axiom-axiom-macos` Use when building ANY macOS app — windows, menus, sandboxing, distribution, AppKit bridging or modernization (control events, state restoration, concentric corners), or macOS-specific SwiftUI patterns. - [Axiom Audit Icloud](https://agentstack.voostack.com/l/skill-charleswiltgen-axiom-axiom-audit-icloud) — Skill · Free · security-reviewed — `agentstack add skill-charleswiltgen-axiom-axiom-audit-icloud` Use when the user mentions iCloud sync issues, CloudKit errors, ubiquitous container problems, or asks to audit cloud sync. - [Axiom Audit Storage](https://agentstack.voostack.com/l/skill-charleswiltgen-axiom-axiom-audit-storage) — Skill · Free · security-reviewed — `agentstack add skill-charleswiltgen-axiom-axiom-audit-storage` Use when the user mentions file storage issues, data loss, backup bloat, or asks to audit storage usage. - [Axiom Audit Spritekit](https://agentstack.voostack.com/l/skill-charleswiltgen-axiom-axiom-audit-spritekit) — Skill · Free · security-reviewed — `agentstack add skill-charleswiltgen-axiom-axiom-audit-spritekit` Use when the user wants to audit SpriteKit game code for common issues. - [Axiom Audit Accessibility](https://agentstack.voostack.com/l/skill-charleswiltgen-axiom-axiom-audit-accessibility) — Skill · Free · security-reviewed — `agentstack add skill-charleswiltgen-axiom-axiom-audit-accessibility` Use when the user mentions accessibility checking, App Store submission, code review, or WCAG compliance. - [Axiom Xcode Mcp](https://agentstack.voostack.com/l/skill-charleswiltgen-axiom-axiom-xcode-mcp) — Skill · Free · security-reviewed — `agentstack add skill-charleswiltgen-axiom-axiom-xcode-mcp` Use when connecting to Xcode via MCP, using xcrun mcpbridge, or working with ANY Xcode MCP tool (XcodeRead, BuildProject, RunTests, RenderPreview). Covers setup, tool reference, workflow patterns, troubleshooting. - [Axiom Audit Liquid Glass](https://agentstack.voostack.com/l/skill-charleswiltgen-axiom-axiom-audit-liquid-glass) — Skill · Free · security-reviewed — `agentstack add skill-charleswiltgen-axiom-axiom-audit-liquid-glass` Use when the user mentions Liquid Glass review, iOS 26 UI updates, toolbar improvements, or visual effect migration. - [Axiom Audit Foundation Models](https://agentstack.voostack.com/l/skill-charleswiltgen-axiom-axiom-audit-foundation-models) — Skill · Free — `agentstack add skill-charleswiltgen-axiom-axiom-audit-foundation-models` Use when the user mentions Foundation Models review, on-device AI audit, LanguageModelSession issues, @Generable checking, or Apple Intelligence integration review. - [Axiom Analyze Test Failures](https://agentstack.voostack.com/l/skill-charleswiltgen-axiom-axiom-analyze-test-failures) — Skill · Free · security-reviewed — `agentstack add skill-charleswiltgen-axiom-axiom-analyze-test-failures` Use when the user mentions flaky tests, tests that pass locally but fail in CI, race conditions in tests, or needs to diagnose WHY a specific test fails. - [Axiom Apple Docs](https://agentstack.voostack.com/l/skill-charleswiltgen-axiom-axiom-apple-docs) — Skill · Free · security-reviewed — `agentstack add skill-charleswiltgen-axiom-axiom-apple-docs` Use when ANY question involves Apple framework APIs, Swift compiler errors, or Xcode-bundled documentation. Covers Liquid Glass, Swift 6.2 concurrency, Foundation Models, SwiftData, StoreKit, 32 Swift compiler diagnostics. - [Axiom Location](https://agentstack.voostack.com/l/skill-charleswiltgen-axiom-axiom-location) — Skill · Free · security-reviewed — `agentstack add skill-charleswiltgen-axiom-axiom-location` Use when implementing location services, maps, geofencing, or debugging location/MapKit issues. Covers Core Location, CLMonitor, MapKit, annotations, directions. - [Axiom Games](https://agentstack.voostack.com/l/skill-charleswiltgen-axiom-axiom-games) — Skill · Free · security-reviewed — `agentstack add skill-charleswiltgen-axiom-axiom-games` Use when building ANY 2D or 3D game with SpriteKit, SceneKit, or RealityKit, or adding touch controls or game controller support. Covers scene graphs, ECS, physics, actions, game loops, rendering, TouchController, GCController. - [Axiom Integration](https://agentstack.voostack.com/l/skill-charleswiltgen-axiom-axiom-integration) — Skill · Free · security-reviewed — `agentstack add skill-charleswiltgen-axiom-axiom-integration` Use when integrating ANY iOS system feature - Siri, Shortcuts, widgets, IAP, localization, privacy, alarms, calendar, reminders, contacts, background tasks, push notifications, timers. Covers App Intents, WidgetKit, StoreKit, EventKit, Contacts. - [Axiom Accessibility](https://agentstack.voostack.com/l/skill-charleswiltgen-axiom-axiom-accessibility) — Skill · Free · security-reviewed — `agentstack add skill-charleswiltgen-axiom-axiom-accessibility` Use when fixing or auditing ANY accessibility issue — VoiceOver, Dynamic Type, color contrast, touch targets, WCAG compliance, App Store accessibility review. - [Axiom Tools](https://agentstack.voostack.com/l/skill-charleswiltgen-axiom-axiom-tools) — Skill · Free · security-reviewed — `agentstack add skill-charleswiltgen-axiom-axiom-tools` Use when asking how to use Axiom or what skills exist, capturing console with xclog, symbolicating .ips/MetricKit/.crash crashes with xcsym, driving/validating simulator UI & accessibility with xcui, or analyzing xctrace/CPU profiles with xcprof. - [Axiom Audit Networking](https://agentstack.voostack.com/l/skill-charleswiltgen-axiom-axiom-audit-networking) — Skill · Free · security-reviewed — `agentstack add skill-charleswiltgen-axiom-axiom-audit-networking` Use when the user mentions networking review, deprecated APIs, connection issues, or App Store submission prep. - [Axiom Swift](https://agentstack.voostack.com/l/skill-charleswiltgen-axiom-axiom-swift) — Skill · Free · security-reviewed — `agentstack add skill-charleswiltgen-axiom-axiom-swift` Use when reviewing Swift code for modern idioms, working with noncopyable types, implementing drag and drop, adding debug deep links, or building for tvOS. - [Axiom Graphics](https://agentstack.voostack.com/l/skill-charleswiltgen-axiom-axiom-graphics) — Skill · Free · security-reviewed — `agentstack add skill-charleswiltgen-axiom-axiom-graphics` Use when working with ANY GPU rendering, Metal, OpenGL migration, shaders, 3D content, RealityKit, AR, USD/USDZ files, or display performance. Covers Metal migration, shader conversion, RealityKit ECS, RealityView, USDKit, ProMotion. - [Axiom Analyze Swiftui Performance](https://agentstack.voostack.com/l/skill-charleswiltgen-axiom-axiom-analyze-swiftui-performance) — Skill · Free · security-reviewed — `agentstack add skill-charleswiltgen-axiom-axiom-analyze-swiftui-performance` Use when the user mentions SwiftUI performance, janky scrolling, slow animations, or view update issues. - [Axiom Performance](https://agentstack.voostack.com/l/skill-charleswiltgen-axiom-axiom-performance) — Skill · Free · security-reviewed — `agentstack add skill-charleswiltgen-axiom-axiom-performance` Use when app feels slow, memory grows, battery drains, or diagnosing ANY performance issue. Covers memory leaks, profiling, Instruments workflows, retain cycles, performance optimization. - [Axiom Audit Memory](https://agentstack.voostack.com/l/skill-charleswiltgen-axiom-axiom-audit-memory) — Skill · Free · security-reviewed — `agentstack add skill-charleswiltgen-axiom-axiom-audit-memory` Use when the user mentions memory leak prevention, code review for memory issues, or proactive leak checking. - [Axiom Audit Codable](https://agentstack.voostack.com/l/skill-charleswiltgen-axiom-axiom-audit-codable) — Skill · Free · security-reviewed — `agentstack add skill-charleswiltgen-axiom-axiom-audit-codable` Use when the user mentions Codable review, JSON encoding/decoding issues, data serialization audit, or modernizing legacy code. - [Axiom Analyze Crash](https://agentstack.voostack.com/l/skill-charleswiltgen-axiom-axiom-analyze-crash) — Skill · Free · security-reviewed — `agentstack add skill-charleswiltgen-axiom-axiom-analyze-crash` Use when the user has a crash log (. - [Axiom Shipping](https://agentstack.voostack.com/l/skill-charleswiltgen-axiom-axiom-shipping) — Skill · Free · security-reviewed — `agentstack add skill-charleswiltgen-axiom-axiom-shipping` Use when preparing ANY app for submission, handling App Store rejections, writing appeals, or managing App Store Connect. Covers submission checklists, rejection troubleshooting, metadata requirements, privacy manifests, age ratings, export compliance. - [Axiom Ai](https://agentstack.voostack.com/l/skill-charleswiltgen-axiom-axiom-ai) — Skill · Free · security-reviewed — `agentstack add skill-charleswiltgen-axiom-axiom-ai` Use when implementing ANY Apple Intelligence or on-device AI feature. Covers Foundation Models, @Generable, LanguageModelSession, structured output, Tool protocol, iOS 26 AI integration. - [Axiom Uikit](https://agentstack.voostack.com/l/skill-charleswiltgen-axiom-axiom-uikit) — Skill · Free · security-reviewed — `agentstack add skill-charleswiltgen-axiom-axiom-uikit` Use when bridging UIKit and SwiftUI, modernizing UIKit apps (scene lifecycle, resizability), debugging Auto Layout, Combine, TextKit, PencilKit, or UIKit animations. - [Axiom Audit Camera](https://agentstack.voostack.com/l/skill-charleswiltgen-axiom-axiom-audit-camera) — Skill · Free · security-reviewed — `agentstack add skill-charleswiltgen-axiom-axiom-audit-camera` Use this agent to scan Swift code for camera, video, and audio capture issues including deprecated APIs, missing interruption handlers, threading violations, and permission anti-patterns. - [Axiom Concurrency](https://agentstack.voostack.com/l/skill-charleswiltgen-axiom-axiom-concurrency) — Skill · Free · security-reviewed — `agentstack add skill-charleswiltgen-axiom-axiom-concurrency` Use when writing ANY async code, actors, threads, or seeing ANY concurrency error. Covers Swift 6 concurrency, @MainActor, Sendable, data races, async/await patterns. - [Axiom Analyze Swift Performance](https://agentstack.voostack.com/l/skill-charleswiltgen-axiom-axiom-analyze-swift-performance) — Skill · Free · security-reviewed — `agentstack add skill-charleswiltgen-axiom-axiom-analyze-swift-performance` Use when the user mentions Swift performance audit, code optimization, or performance review. - [Axiom Audit Iap](https://agentstack.voostack.com/l/skill-charleswiltgen-axiom-axiom-audit-iap) — Skill · Free · security-reviewed — `agentstack add skill-charleswiltgen-axiom-axiom-audit-iap` Use when the user mentions in-app purchase review, IAP audit, StoreKit issues, purchase bugs, transaction problems, or subscription management. - [Axiom Security](https://agentstack.voostack.com/l/skill-charleswiltgen-axiom-axiom-security) — Skill · Free · security-reviewed — `agentstack add skill-charleswiltgen-axiom-axiom-security` Use when storing credentials securely, encrypting data, implementing passkeys, securing AI/agentic features against prompt injection, code signing, or managing certificates and provisioning profiles. - [Axiom Audit Concurrency](https://agentstack.voostack.com/l/skill-charleswiltgen-axiom-axiom-audit-concurrency) — Skill · Free · security-reviewed — `agentstack add skill-charleswiltgen-axiom-axiom-audit-concurrency` Use when the user mentions concurrency checking, Swift 6 compliance, data race prevention, or async code review. - [Axiom Analyze Triage](https://agentstack.voostack.com/l/skill-charleswiltgen-axiom-axiom-analyze-triage) — Skill · Free · security-reviewed — `agentstack add skill-charleswiltgen-axiom-axiom-analyze-triage` Use when the user wants to triage a CORPUS of production crashes/hangs from an aggregator (Sentry, App Store Connect) — grouped, counted issues — rather than a single crash file. - [Axiom Watchos](https://agentstack.voostack.com/l/skill-charleswiltgen-axiom-axiom-watchos) — Skill · Free · security-reviewed — `agentstack add skill-charleswiltgen-axiom-axiom-watchos` Use when building ANY watchOS app — app structure, independent apps, Watch Connectivity, Smart Stack widgets, complications, controls, RelevanceKit, background tasks, ClockKit migration. - [Axiom Audit Database Schema](https://agentstack.voostack.com/l/skill-charleswiltgen-axiom-axiom-audit-database-schema) — Skill · Free — `agentstack add skill-charleswiltgen-axiom-axiom-audit-database-schema` Use when the user mentions database schema review, migration safety, GRDB migration audit, or SQLite schema checking. - [Axiom Build](https://agentstack.voostack.com/l/skill-charleswiltgen-axiom-axiom-build) — Skill · Free · security-reviewed — `agentstack add skill-charleswiltgen-axiom-axiom-build` Use when ANY iOS build fails, test crashes, Xcode misbehaves, or environment issue occurs before debugging code. Covers build failures, compilation errors, dependency conflicts, simulator problems, environment-first diagnostics. - [Axiom Swiftui](https://agentstack.voostack.com/l/skill-charleswiltgen-axiom-axiom-swiftui) — Skill · Free · security-reviewed — `agentstack add skill-charleswiltgen-axiom-axiom-swiftui` Use when building, fixing, or improving ANY SwiftUI UI — views, navigation, layout, animations, performance, architecture, gestures, debugging, iOS 26 features. - [Axiom Health](https://agentstack.voostack.com/l/skill-charleswiltgen-axiom-axiom-health) — Skill · Free · security-reviewed — `agentstack add skill-charleswiltgen-axiom-axiom-health` Use when working with HealthKit, WorkoutKit, health data, workouts, or fitness features on iOS or watchOS. Covers permissions, queries, background delivery, custom workouts, multidevice coordination. - [Axiom Payments](https://agentstack.voostack.com/l/skill-charleswiltgen-axiom-axiom-payments) — Skill · Free · security-reviewed — `agentstack add skill-charleswiltgen-axiom-axiom-payments` Use when accepting ANY real-world payment — Apple Pay, Wallet passes, Tap to Pay, Orders in Wallet. NOT in-app purchase / digital content (use axiom-integration). Covers entitlements, certs, signing, App Review payment rules. --- Seller on AgentStack — the marketplace for AI agent skills and MCP servers. Every listing is security-reviewed. Install any with `agentstack add `.