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-swiftuigit 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-swiftui)<a href="https://agentmods.dev/skills/charleswiltgen/axiom/axiom-swiftui"><img src="https://agentmods.dev/badge/skills/charleswiltgen/axiom/axiom-swiftui/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-swiftui"><img src="https://agentmods.dev/badge/skills/charleswiltgen/axiom/axiom-swiftui.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- Socket pass
- Snyk warn
- NVIDIA SkillSpector pass
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 | $0.00041 | $0.02564 |
| Opus 5 | $0.00020 | $0.01282 |
| Sonnet 5 | $0.00008 | $0.00513 |
| Haiku 4.5 | $0.00004 | $0.00256 |
Grade A, and why
axiom-swiftui 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 — 143 lines — stays where its author put it; the contents beside it link to each section on GitHub.
SwiftUI
You MUST use this skill for ANY SwiftUI work including views, state, navigation, layout, animations, architecture, gestures, and debugging.
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/swiftui-architecture-auditor.md,skills/swiftui-layout-auditor.md,skills/swiftui-nav-auditor.md,skills/swiftui-performance-analyzer.md,skills/textkit-auditor.md,skills/ux-flow-auditor.md. Homed in another suite:axiom-design/skills/liquid-glass-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 |
|---|---|
| View not updating | See skills/debugging.md |
| View update still broken after debugging | See skills/debugging-diag.md |
Slow previews / building good previews / @Previewable / PreviewModifier / variant matrix |
See skills/previews.md |
Preview API reference (#Preview, traits, modes, Development Assets) |
See skills/previews-ref.md |
| Preview crashes / won't load | See skills/debugging.md (Preview Crashes section) |
| Hot reload / live editing / edit the running app on device | See skills/hot-reload.md |
| Navigation issues | See skills/nav.md |
| Navigation still broken after debugging | See skills/nav-diag.md |
| Navigation API reference | See skills/nav-ref.md |
| Layout breaks on iPad/rotation | See skills/layout.md |
| State lost on resize/rotation (scroll, selection, focus, drafts) | See skills/layout.md (State Survives the Transition) |
| Layout API reference | See skills/layout-ref.md |
| Performance/lag/slow scroll | See skills/swiftui-performance.md |
| Architecture/testability | See skills/architecture.md |
@State object rebuilt every view init, or an init assignment ignored at runtime |
See skills/architecture.md (@State is a macro now) |
| Animation issues | See skills/animation-ref.md |
| Stacks/grids/outlines | See skills/containers-ref.md |
| Custom containers / List replacement (iOS 18+) | See skills/containers-ref.md Part 7 |
| Search implementation | See skills/search-ref.md |
| Toolbars, ToolbarItem, sheet button placement, customization | See skills/toolbars.md |
| Sheets, detents, popovers, fullScreenCover, presentation adaptation | See skills/presentations.md |
| Multi-column Table, sortable/resizable columns (iPad/Mac; collapses to first column in compact) | See axiom-macos (skills/swiftui-differences.md) |
Inspector panel (.inspector — trailing column in regular width, sheet in compact) |
See axiom-macos (skills/swiftui-differences.md) |
| Gesture conflicts | See skills/gestures.md |
| Section index — the vertical A–Z index strip / alphabet scrubber on a list's trailing edge, jump-to-section | See skills/26-ref.md (Section Index) |
List section margins / insets around a Section |
See skills/26-ref.md (Section Margins) |
Web content — WebView / WebPage, scroll modifiers, WebView-in-NavigationStack |
See skills/26-ref.md (WebView & WebPage) |
| iOS 26 features | See skills/26-ref.md |
What ships with it
25 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/26-ref.md 51 KB
- skills/animation-ref.md 27 KB
- skills/architecture.md 64 KB
- skills/containers-ref.md 20 KB
- skills/debugging-diag.md 24 KB
- skills/debugging.md 40 KB
- skills/gestures.md 25 KB
- skills/hot-reload.md 8.1 KB
- skills/layout-ref.md 36 KB
- skills/layout.md 17 KB
- skills/nav-diag.md 41 KB
- skills/nav-ref.md 34 KB
- skills/nav.md 24 KB
- skills/presentations.md 5.5 KB
- skills/previews-ref.md 22 KB
- skills/previews.md 23 KB
- skills/search-ref.md 19 KB
- skills/swiftui-architecture-auditor.md 12 KB
- skills/swiftui-layout-auditor.md 14 KB
- skills/swiftui-nav-auditor.md 12 KB
- skills/swiftui-performance-analyzer.md 14 KB
- skills/swiftui-performance.md 35 KB
- skills/textkit-auditor.md 20 KB
- skills/toolbars.md 28 KB
- skills/ux-flow-auditor.md 14 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 · 143 lines · 41 tokens per session scan A c4169f769c7a
axiom-swiftui is a skill published in the GitHub repository CharlesWiltgen/Axiom (1,155 stars, last pushed 3d ago), licensed MIT. It adds 41 tokens to every session and 2,564 once invoked, about $0.0002 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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