Agent skills
Skills you can use with AI coding agents, indexed from public GitHub repositories.
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axiom-timer-patterns
Use when implementing timers, debugging timer crashes (EXC_BAD_INSTRUCTION), Timer stops during scrolling, or choosing between Timer/DispatchSourceTimer/Combine/async timer APIs
CharlesWiltgen/Axiom 698
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axiom-swiftui-containers-ref
Reference — SwiftUI stacks, grids, outlines, and scroll enhancements through iOS 26
CharlesWiltgen/Axiom 698
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axiom-code-signing-diag
Use when code signing fails during build, archive, or upload — certificate not found, provisioning profile mismatch, errSecInternalComponent in CI, ITMS-90035 invalid signature, ambiguous identity, entitlement mismatch. Covers certificate, profile, keychain, entitlement, and archive signing diagnostics.
CharlesWiltgen/Axiom 698
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axiom-sqlitedata-ref
SQLiteData advanced patterns, @Selection column groups, single-table inheritance, recursive CTEs, database views, custom aggregates, TableAlias self-joins, JSON/string aggregation
CharlesWiltgen/Axiom 698
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axiom-build-performance
Use when build times are slow, investigating build performance, analyzing Build Timeline, identifying type checking bottlenecks, enabling compilation caching, or optimizing incremental builds - comprehensive build optimization workflows including Xcode 26 compilation caching
CharlesWiltgen/Axiom 698
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axiom-realitykit
Use when building 3D content, AR experiences, or spatial computing with RealityKit. Covers ECS architecture, SwiftUI integration, RealityView, AR anchors, materials, physics, interaction, multiplayer, performance.
CharlesWiltgen/Axiom 698
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axiom-swift-concurrency-ref
Swift concurrency API reference — actors, Sendable, Task/TaskGroup, AsyncStream, continuations, isolation patterns, DispatchQueue-to-actor migration with gotcha tables
CharlesWiltgen/Axiom 698
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axiom-ios-testing
Use when writing ANY test, debugging flaky tests, making tests faster, or asking about Swift Testing vs XCTest. Covers unit tests, UI tests, fast tests without simulator, async testing, test architecture.
CharlesWiltgen/Axiom 698
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axiom-cloudkit-ref
Use when implementing 'CloudKit sync', 'CKSyncEngine', 'CKRecord', 'CKDatabase', 'SwiftData CloudKit', 'shared database', 'public database', 'CloudKit zones', 'conflict resolution' - comprehensive CloudKit database APIs and modern sync patterns reference
CharlesWiltgen/Axiom 698
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axiom-xctest-automation
Use when writing, running, or debugging XCUITests. Covers element queries, waiting strategies, accessibility identifiers, test plans, and CI/CD test execution patterns.
CharlesWiltgen/Axiom 698
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axiom-networking-diag
Use when debugging connection timeouts, TLS handshake failures, data not arriving, connection drops, performance issues, or proxy/VPN interference - systematic Network.framework diagnostics with production crisis defense
CharlesWiltgen/Axiom 698
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axiom-vision-diag
subject not detected, hand pose missing landmarks, low confidence observations, Vision performance, coordinate conversion, VisionKit errors, observation nil, text not recognized, barcode not detected, DataScannerViewController not working, document scan issues
CharlesWiltgen/Axiom 698
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axiom-energy-ref
Complete energy optimization API reference - Power Profiler workflows, timer/network/location/background APIs, iOS 26 BGContinuedProcessingTask, MetricKit monitoring, with all WWDC code examples
CharlesWiltgen/Axiom 698
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axiom-ios-networking
Use when implementing or debugging ANY network connection, API call, or socket. Covers URLSession, Network.framework, NetworkConnection, deprecated APIs, connection diagnostics, structured concurrency networking.
CharlesWiltgen/Axiom 698
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axiom-ios-ui
Use when building, fixing, or improving ANY iOS UI including SwiftUI, UIKit, layout, navigation, animations, design guidelines. Covers view updates, layout bugs, navigation issues, performance, architecture, Apple design compliance.
CharlesWiltgen/Axiom 698
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axiom-networking-legacy
This skill should be used when working with NWConnection patterns for iOS 12-25, supporting apps that can't use async/await yet, or maintaining backward compatibility with completion handler networking.
CharlesWiltgen/Axiom 698
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axiom-spritekit-ref
SpriteKit API reference — all node types, physics body creation, action catalog, texture atlases, constraints, scene setup, particles, SKRenderer
CharlesWiltgen/Axiom 698
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axiom-now-playing-carplay
CarPlay Now Playing integration patterns. Use when implementing CarPlay audio controls, CPNowPlayingTemplate customization, or debugging CarPlay-specific issues.
CharlesWiltgen/Axiom 698
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axiom-swiftui-layout-ref
Reference — Complete SwiftUI adaptive layout API guide covering ViewThatFits, AnyLayout, Layout protocol, onGeometryChange, GeometryReader, size classes, and iOS 26 window APIs
CharlesWiltgen/Axiom 698
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axiom-textkit-ref
TextKit 2 complete reference (architecture, migration, Writing Tools, SwiftUI TextEditor) through iOS 26
CharlesWiltgen/Axiom 698
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axiom-vision
subject segmentation, VNGenerateForegroundInstanceMaskRequest, isolate object from hand, VisionKit subject lifting, image foreground detection, instance masks, class-agnostic segmentation, VNRecognizeTextRequest, OCR, VNDetectBarcodesRequest, DataScannerViewController, document scanning, RecognizeDocumentsRequest
CharlesWiltgen/Axiom 698
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axiom-xcode-debugging
Use when encountering BUILD FAILED, test crashes, simulator hangs, stale builds, zombie xcodebuild processes, "Unable to boot simulator", "No such module" after SPM changes, or mysterious test failures despite no code changes - systematic environment-first diagnostics for iOS/macOS projects
CharlesWiltgen/Axiom 698
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axiom-swiftui-nav-diag
Use when debugging navigation not responding, unexpected pops, deep links showing wrong screen, state lost on tab switch or background, crashes in navigationDestination, or any SwiftUI navigation failure - systematic diagnostics with production crisis defense
CharlesWiltgen/Axiom 698
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axiom-file-protection-ref
Use when asking about 'FileProtectionType', 'file encryption iOS', 'NSFileProtection', 'data protection', 'secure file storage', 'encrypt files at rest', 'complete protection', 'file security' - comprehensive reference for iOS file encryption and data protection APIs
CharlesWiltgen/Axiom 698