How do I install the Axiom Media skill?

Run npx skillmds@latest add charleswiltgen/axiom-media-3 in your terminal (requires Node.js), paste this page's agent-chat prompt into Claude, Cursor, or any MCP-connected agent, or download the SKILL.md file and copy it into your agent's skills directory.

What does the Axiom Media skill do?

Use when working with camera, photos, audio, haptics, ShazamKit, on-device music analysis, face grouping and video highlights, screen recording, casting to non-AirPlay routes, SharePlay playback, the user's Apple Music library, lock-screen metadata, or CarPlay app design, templates, and navigation. Covers AVCaptureSession, AVFoundation, Core Haptics, MediaPlayer, MusicKit, NowPlaying, ScreenCaptureKit, DockKit. It is listed under Coding & Dev Tools on SkillMD.

Is Axiom Media safe to use?

This skill has not completed SkillMD's automated safety review yet. Independent scanners report: SkillSpector: PASS, Skill Scanner: PASS. Capability flags: docs only. SkillMD never runs a skill's scripts for you; review the SKILL.md before installing.

Which AI agents work with Axiom Media?

This skill is tagged as working with Claude Code, Claude.ai, OpenAI Codex. SKILL.md is an open format, so most agents that read a skills directory can load it too.

Is Axiom Media free to use?

Yes. Installing skills from SkillMD is free, and the skill stays under its author's original license.

Who published Axiom Media?

charleswiltgen (@charleswiltgen) published this skill. Their other Agent Skills are listed on their SkillMD profile.

Axiom Media by charleswiltgen — Agent Skill

Name: Axiom Media
Rating: 4.666666666666667 (3 reviews)
Author: charleswiltgen

Media

You MUST use this skill for ANY camera, photo, audio, haptic, or media playback work.

Cursor Subagent Routing

Delegate to the appropriate Cursor subagent when this router calls for a specialized auditor.

Quick Reference

Symptom / Task	Reference
Camera capture, AVCaptureSession	See `skills/camera-capture.md`
Slow camera launch / deferred start (iOS 26+), ProRes recording via Pro Video Storage (`OS27`)	See `skills/camera-capture.md` Patterns 8-9
Camera API (RotationCoordinator, etc.)	See `skills/camera-capture-ref.md`
Lens aperture / shutter / ISO priority modes, exposure signals, continuous autofocus tracking, low-light video noise reduction, cinematic video metadata capture (`OS27`)	See `skills/camera-capture-ref.md`
Center Stage front camera (iPhone 17), dynamic aspect ratio, smart framing, 24/48 MP capture	See `skills/camera-capture-ref.md`
iPhone Duo front cameras (virtual front camera, inner/outer ultra-wide), camera direction vs position	See `skills/camera-capture.md` Pattern 6 and `skills/camera-capture-ref.md` (iPhone Duo Front Cameras)
Camera freezes, black preview, rotation	See `skills/camera-capture-diag.md`
Photo pickers, library access	See `skills/photo-library.md`
PHPicker, PhotosPicker, PhotoKit API reference: asset metadata editing (keywords, rating, caption), persistent change observer, background resource upload (`OS27`)	See `skills/photo-library-ref.md`
PhotoKit + Swift 6 strict concurrency, `nonisolated` observer, `performChanges` isolation, `_dispatch_assert_queue_fail`	See axiom-concurrency (skills/isolation-inheritance-diag.md)
Audio, AVFoundation, spatial audio, async session activation, throwing AVAudioEngine APIs (`OS27`)	See `skills/avfoundation-ref.md`
Video write/export/playback, sample-buffer engine, resumable export, Apple Log 2, iOS 27 deprecations (`OS27`)	See `skills/avfoundation-video-ref.md`
Audio recognition, ShazamKit	See `skills/shazamkit.md`
ShazamKit API reference	See `skills/shazamkit-ref.md`
On-device music analysis (key, tempo, structure, loudness), MusicUnderstanding (`OS27`)	See `skills/music-understanding.md`
On-device face grouping (cluster faces into people across a library), video highlights/key frames, MediaIntelligence (`OS27`)	See `skills/media-intelligence.md`
Haptic feedback, Core Haptics	See `skills/haptics.md`
SharePlay coordinated playback, AVDelegatingPlaybackCoordinator, custom-engine sync	See `skills/shareplay-playback.md`
SharePlay session lifecycle, activation, non-media state	Use axiom-integration (`skills/shareplay.md`) instead
Now Playing metadata, remote commands	See `skills/now-playing.md`
Animated lock-screen artwork (iOS 26+)	See `skills/now-playing.md` Pattern 8
NowPlaying framework (`import NowPlaying`, Swift-native `MediaSession`, `OS27`)	See `skills/now-playing.md` (NowPlaying Framework section)
Cast / route media to non-AirPlay devices (Google Cast/Chromecast, DLNA) as system routes, AVSystemRouting (`iOS27`, likely EU-gated)	See `skills/system-media-routing.md`
Screen capture / recording / streaming the screen or your own app, ScreenCaptureKit (`OS27` — new on iOS/iPadOS/tvOS/visionOS 27; macOS 12.3+)	See `skills/screen-capture.md`
CarPlay HIG, app categories, design rules, entitlements	See `skills/carplay-hig.md`
CarPlay templates reference (all 12 templates, availability matrix, depth limits)	See `skills/carplay-templates-ref.md`
CarPlay navigation reference (base view, route guidance, cluster/HUD, multitouch, voice prompts, map panels + EV charging iOS 27)	See `skills/carplay-navigation-ref.md`
CarPlay Now Playing template customization + sports mode	See `skills/now-playing-carplay.md`
MusicKit Now Playing, ApplicationMusicPlayer playback, subscription/authorization	See `skills/now-playing-musickit.md`
Enumerate the user's Apple Music library — MusicLibraryRequest vs MPMediaQuery, reconciling the two, playlist entries, sync, library identity, per-device `Song.id`, missing `PlayParameters`, MusicKit stops responding after a scan	See `skills/music-library.md`
DockKit motorized stands / gimbals, subject tracking, custom motor control	See `skills/dockkit.md`
Speech-to-text / transcription (SpeechAnalyzer, mic → transcript)	Invoke axiom-ai (`skills/ios-ml.md`)

Decision Tree

digraph media {
    start [label="Media task" shape=ellipse];
    what [label="Which media feature?" shape=diamond];
    auditor [label="camera-auditor agent" shape=box];

    start -> what;
    what -> "skills/camera-capture.md" [label="camera capture"];
    what -> "skills/photo-library.md" [label="photo pickers\n/ library"];
    what -> "skills/avfoundation-ref.md" [label="audio / AVFoundation"];
    what -> "skills/avfoundation-video-ref.md" [label="video write/export\n/ sample-buffer (OS27)"];
    what -> "skills/shazamkit.md" [label="ShazamKit\n/ audio recognition"];
    what -> "skills/music-understanding.md" [label="music analysis\n(key/tempo/structure)"];
    what -> "skills/media-intelligence.md" [label="face grouping /\nvideo highlights (OS27)"];
    what -> "skills/haptics.md" [label="haptic feedback"];
    what -> "skills/now-playing.md" [label="Now Playing\n/ remote commands"];
    what -> "skills/music-library.md" [label="enumerate Apple Music\nlibrary / identity"];
    what -> "skills/system-media-routing.md" [label="cast to non-AirPlay\n(Chromecast/DLNA, iOS27)"];
    what -> "skills/screen-capture.md" [label="screen capture /\nrecording (OS27)"];
    what -> "skills/carplay-hig.md" [label="CarPlay app design\n/ categories / entitlements"];
    what -> "skills/dockkit.md" [label="DockKit stands\n/ gimbals / tracking"];
    what -> auditor [label="camera code audit"];
}

Camera capture? → skills/camera-capture.md (patterns), skills/camera-capture-ref.md (API), skills/camera-capture-diag.md (debugging)
Photo pickers / library? → skills/photo-library.md, skills/photo-library-ref.md
Audio / AVFoundation (audio)? → skills/avfoundation-ref.md; video write/export/playback, sample-buffer engine, resumable export, iOS 27 deprecations? → skills/avfoundation-video-ref.md (OS27)
ShazamKit / audio recognition? → skills/shazamkit.md, skills/shazamkit-ref.md
On-device music analysis (key, tempo, structure, pace, instruments, loudness)? → skills/music-understanding.md (OS27)
On-device face grouping (cluster faces into people across a library) or video highlights / key-frame detection? → skills/media-intelligence.md (OS27)
Haptics? → skills/haptics.md
Now Playing / remote commands? → skills/now-playing.md, skills/now-playing-carplay.md, skills/now-playing-musickit.md
Reading the user's Apple Music library (enumerate songs/playlists, library identity, sync)? → skills/music-library.md — a different problem from playback; read it before any library walk
Cast / route media to non-AirPlay devices (Google Cast/Chromecast, DLNA) as system routes? → skills/system-media-routing.md (iOS27, likely EU-gated)
Screen capture / recording / streaming the screen or your own app (ScreenCaptureKit)? → skills/screen-capture.md (OS27 — new on iOS/iPadOS/tvOS/visionOS 27)
CarPlay app design, category selection, entitlement request? → skills/carplay-hig.md (start here for any CarPlay work)
DockKit motorized stands / gimbals, subject tracking, custom motor control? → skills/dockkit.md
Want camera code audit? → Delegate to the camera-auditor subagent (detects deprecated APIs and architectural gaps: missing interruption handlers, runtime-error recovery, audio session deactivation, permission-denied UX, RotationCoordinator on iOS 17+; scores RELIABLE / FRAGILE / BROKEN)

Cross-Domain Routing

Camera + permissions (camera access denied, Info.plist missing):

Camera code → stay here (camera-capture)
Privacy manifest / Info.plist → invoke axiom-integration (privacy-ux reference)
Build/entitlement errors → invoke axiom-build

ShazamKit + microphone permissions:

Microphone NSMicrophoneUsageDescription → invoke axiom-integration (privacy-ux reference)
ShazamKit API and matching → stay here (shazamkit)

Now Playing + background audio:

Now Playing metadata/controls → stay here (now-playing)
Background audio mode / BGTaskScheduler → invoke axiom-integration (background-processing reference)

Speech-to-text + audio capture (transcribing mic or asset audio):

SpeechAnalyzer / SpeechTranscriber, the ~2-simultaneous-analyzer cap, the OS27 input providers → invoke axiom-ai (skills/ios-ml.md)
Audio session category/mode, AVCaptureSession wiring → stay here (avfoundation-ref, camera-capture)
The trap: CaptureInputSequenceProvider.providerWithSession(...) (OS27) automatically reconfigures your app's default AVAudioSession. If this suite's audio-session setup "randomly breaks" after transcription is added, that's the cause — use provider(from:in:) and add its captureAudioDataOutput to your own session.

Apple Music library + playback + persistence:

Enumerating the library, library identity, PlayParameters availability, Sync Library hazards → stay here (music-library)
Queuing and playing what you found, Now Playing publishing → stay here (now-playing-musickit)
Storing library rows in your own database (which column is the durable key, migrations for a re-key) → invoke axiom-data — but take the identity rules from music-library first; persistentID is not a durable key
MusicAuthorization prompt copy / privacy manifest → invoke axiom-integration (privacy-ux reference)

Photo library + privacy:

Photo picker (PHPicker, PhotosPicker) → stay here (photo-library) — no permissions needed
Full PHPhotoLibrary access → stay here (photo-library-ref) — limited access model
Privacy manifest for photo usage → invoke axiom-integration (privacy-ux reference)

DockKit + camera / custom inference:

DockKit stand control, framing, motor, tracking states → stay here (dockkit)
Underlying AVCaptureSession setup → stay here (camera-capture)
Custom Vision / Core ML inference feeding observations → invoke axiom-vision
Camera permission (NSCameraUsageDescription) → invoke axiom-integration (privacy-ux reference)

MediaIntelligence + Vision (faces, image analysis):

Group faces into people across a library, video highlights / key frames → stay here (media-intelligence) — clustering identities + on-device video moment detection
Detect where a face is in one image (bounding box, landmarks), OCR, segmentation → invoke axiom-vision — per-image detection, a different problem
System Photos "People" album → that album is system-owned (PhotoKit); MediaIntelligence builds your own index over assets you manage → stay here (photo-library for the asset access)

Anti-Rationalization

Thought	Reality
"Camera capture is just AVCaptureSession setup"	Camera has interruption handlers, rotation, and threading requirements.
"Camera launch is fast enough if I startRunning() early"	Output initialization dominates launch; iOS 26 deferred start halves time-to-preview.
"I'll add haptics with a simple API call"	Haptic design has patterns for each interaction type matching HIG.
"ShazamKit is just SHSession + a delegate"	iOS 17+ has SHManagedSession which eliminates all AVAudioEngine boilerplate.
"Now Playing info is just setting metadata"	Remote commands, artwork handling, and state sync have 15+ gotchas.
"I'll use UIImagePickerController for photos"	PHPicker/PhotosPicker are the modern API — no permissions required.
"MediaPlayer reports fewer playlist members than MusicKit, so sync is incomplete"	The gap is structural, not a sync signal: it tracks the entries with no local representation — exact on all five playlists inspected, off by one library-wide. A shipped guard built on this premise silently skipped 9 of 15 playlists forever. Read `skills/music-library.md`.
"Reading the music library is just a MusicLibraryRequest"	Reading one MusicKit property across a large library leaves every later MusicKit request unresumed for the rest of the run, with no error thrown. Pool starvation is a symptom, not the mechanism — a plain `Thread`, which never touches the pool, loses MusicKit identically. Batching the request is ~100x slower, not safer.
"`Song.id` is a stable key I can store"	Its format differs per device for the same library (`i.…` on one, bare numeric on another). Never parse it, never use it as a cross-device key.
"DockKit is just pairing a stand"	Custom control needs system tracking disabled, handles inverted dock states, and two different coordinate origins.
"Grouping faces is just Vision face detection"	Vision detects faces in one image; MediaIntelligence clusters them into persistent people (entities) across a whole library, with its own working directory and state.
"Casting to Chromecast means bundling the Google Cast SDK"	On iOS 27, AVSystemRouting exposes non-AirPlay routes as system routes — you adopt one Apple API (observe events, start a session, drive playbackControl) instead of a per-vendor SDK. Likely EU-gated — gate and keep a fallback.
"I'll sync SharePlay playback by broadcasting the current time over the messenger"	The messenger has no clock. `AVDelegatingPlaybackCoordinatorPlayCommand.hostClockTime` gives you an absolute `CMClockGetHostTimeClock()` start time; hand-rolling reinvents startup barriers, seek ordering, stalls, and interruptions badly.
"The playback coordinator handles interruptions for me"	Only `AVPlayerPlaybackCoordinator` does. `AVDelegatingPlaybackCoordinator` adds no automatic suspensions — a custom engine begins and ends every one, and a suspension never ended hangs the whole group.
"ScreenCaptureKit on iPad works like the Mac (enumerate displays/windows)"	On iOS/iPadOS `SCShareableContent` and all `SCContentFilter` initializers are macOS-only — you get a filter ONLY from the system `SCContentSharingPicker`. New on iOS/iPadOS/tvOS/visionOS 27. Also not `ImageRenderer` (that snapshots your own SwiftUI view).

Example Invocations

User: "How do I set up a camera preview?" → Read: skills/camera-capture.md

User: "My camera app takes a second before preview appears" → Read: skills/camera-capture.md (Pattern 8, deferred start)

User: "Support the Center Stage front camera" / "Capture 48MP photos" → Read: skills/camera-capture-ref.md

User: "How do I switch cameras on iPhone Duo?" / "Choose a camera by direction instead of position" → Read: skills/camera-capture.md (Pattern 6) and skills/camera-capture-ref.md (iPhone Duo Front Cameras)

User: "Camera freezes when I get a phone call" → Read: skills/camera-capture-diag.md

User: "How do I let users pick photos in SwiftUI?" → Read: skills/photo-library.md

User: "Implement haptic feedback for button taps" → Read: skills/haptics.md

User: "Now Playing info doesn't appear on Lock Screen" → Read: skills/now-playing.md

User: "How do I identify songs with ShazamKit?" → Read: skills/shazamkit.md

User: "How do I detect a song's tempo / key / beat grid on-device?" / "Analyze audio loudness or structure" → Read: skills/music-understanding.md

User: "Group faces into people across my photo library" / "cluster faces on-device" / "find highlights or a thumbnail frame in a video" → Read: skills/media-intelligence.md

User: "Cast to Chromecast / Google Cast without the Cast SDK" / "support non-AirPlay casting" / "route media to a DLNA device as a system route" → Read: skills/system-media-routing.md

User: "Record / stream the iPad screen" / "ScreenCaptureKit on iOS" / "screen recording in my app" / "capture just my app's content" → Read: skills/screen-capture.md

User: "List every song in the user's Apple Music library" / "enumerate their playlists" / "MPMediaQuery vs MusicKit" / "sync Apple Music playlists" / "MediaPlayer and MusicKit report different playlist counts" / "my MusicKit requests stop responding after a library scan" / "store a stable id for each song across devices" / "playlists went empty after the user turned on Sync Library" → Read: skills/music-library.md

User: "Track a subject with a motorized stand" / "Control a DockKit gimbal" → Read: skills/dockkit.md

User: "Check my camera code for issues" → Launch: camera-auditor agent

Axiom Media

File contents

Media

Cursor Subagent Routing

Quick Reference

Decision Tree

Cross-Domain Routing

Anti-Rationalization

Example Invocations

Frequently asked questions

Axiom Media

File contents

Media

Cursor Subagent Routing

Quick Reference

Decision Tree

Cross-Domain Routing

Anti-Rationalization

Example Invocations

Related skills

Frequently asked questions

How do I install the Axiom Media skill?

What does the Axiom Media skill do?

Is Axiom Media safe to use?

Which AI agents work with Axiom Media?

Is Axiom Media free to use?

Who published Axiom Media?