Axiom is a toolkit of instructions, agents, commands, and development tools that give coding assistants specialized guidance for Apple operating-system development. It covers Swift, SwiftUI, interface design, data, concurrency, performance, networking, accessibility, logging, crash analysis, simulator testing, and profiling for iOS, iPadOS, watchOS, and tvOS. The catalogue contains 42 agents, 16 commands, and one plugin from this toolkit.
Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add CharlesWiltgen/Axiom --skill axiom-mediagit clone --depth 1 https://github.com/CharlesWiltgen/AxiomWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/charleswiltgen/axiom/axiom-media)<a href="https://agentmods.dev/skills/charleswiltgen/axiom/axiom-media"><img src="https://agentmods.dev/badge/skills/charleswiltgen/axiom/axiom-media/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/charleswiltgen/axiom/axiom-media"><img src="https://agentmods.dev/badge/skills/charleswiltgen/axiom/axiom-media.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- Socket pass
- Snyk pass
- NVIDIA SkillSpector warn
SkillSpector: 2 findings, up to medium
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- medium Rogue Agent · line 96 Skill establishes unauthorized persistence across sessions via cron jobs, startup scripts, or state files. Session persistence allows an attacker to maintain access beyond the current interaction.Fix: Remove any persistence mechanisms (cron jobs, startup scripts, state files). Skills should not maintain state across sessions without explicit user consent.
- medium Rogue Agent · line 98 Skill establishes unauthorized persistence across sessions via cron jobs, startup scripts, or state files. Session persistence allows an attacker to maintain access beyond the current interaction.Fix: Remove any persistence mechanisms (cron jobs, startup scripts, state files). Skills should not maintain state across sessions without explicit user consent.
What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00067 | $0.04019 |
| Opus 5 | $0.00034 | $0.02010 |
| Sonnet 5 | $0.00013 | $0.00804 |
| Haiku 4.5 | $0.00007 | $0.00402 |
Grade A, and why
axiom-media scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 6d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 202 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Media
You MUST use this skill for ANY camera, photo, audio, haptic, or media playback work.
Not on Claude Code? Where this router says "Launch
some-auditoragent", read that auditor's file in this suite and follow it inline — the same procedure, needing only file search and read.Available here:
skills/camera-auditor.md.Agents that need Bash — builds, tests, simulators, crash symbolication — stay Claude Code-only; there is no inline equivalent for those.
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 |
| Center Stage front camera (iPhone 17), dynamic aspect ratio, smart framing, 24/48 MP capture | See skills/camera-capture-ref.md |
| Camera freezes, black preview, rotation | See skills/camera-capture-diag.md |
| Photo pickers, library access | See skills/photo-library.md |
| PHPicker, PhotosPicker API reference | 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 | 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, EU-gated/beta) |
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 bulk-property pool starvation |
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) |
What ships with it
24 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
- skills/avfoundation-ref.md 16 KB
- skills/avfoundation-video-ref.md 11 KB
- skills/camera-auditor.md 23 KB
- skills/camera-capture-diag.md 25 KB
- skills/camera-capture-ref.md 34 KB
- skills/camera-capture.md 34 KB
- skills/carplay-hig.md 29 KB
- skills/carplay-navigation-ref.md 33 KB
- skills/carplay-templates-ref.md 17 KB
- skills/dockkit.md 13 KB
- skills/haptics.md 20 KB
- skills/media-intelligence.md 8.8 KB
- skills/music-library.md 36 KB
- skills/music-understanding.md 6.9 KB
- skills/now-playing-carplay.md 8.6 KB
- skills/now-playing-musickit.md 15 KB
- skills/now-playing.md 51 KB
- skills/photo-library-ref.md 26 KB
- skills/photo-library.md 36 KB
- skills/screen-capture.md 6.0 KB
- skills/shareplay-playback.md 17 KB
- skills/shazamkit-ref.md 14 KB
- skills/shazamkit.md 21 KB
- skills/system-media-routing.md 20 KB
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 6d ago First seen · 202 lines · 67 tokens per session scan A e54f916dec07
axiom-media is a skill published in the GitHub repository CharlesWiltgen/Axiom (1,155 stars, last pushed 3d ago), licensed MIT. It adds 67 tokens to every session and 4,019 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-06.
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