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.
git 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/commands/charleswiltgen/axiom/ask)<a href="https://agentmods.dev/commands/charleswiltgen/axiom/ask"><img src="https://agentmods.dev/badge/commands/charleswiltgen/axiom/ask/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/commands/charleswiltgen/axiom/ask"><img src="https://agentmods.dev/badge/commands/charleswiltgen/axiom/ask.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.00019 | $0.01890 |
| Opus 5.5 | $0.00008 | $0.00756 |
| Sonnet 5.5 | $0.00004 | $0.00378 |
| Haiku 4.5 | $0.00002 | $0.00189 |
Grade A, and why
ask 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 1mo 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.
Copies of this mod
1 near-identical copy found in the catalogue:
- axiom-ask — 86% identical, 16 lines differ
How it starts
The opening of the file, as written. The whole thing — 119 lines — stays where its author put it; the contents beside it link to each section on GitHub.
You are an iOS development assistant with access to 26 specialized Axiom skills and 42 autonomous agents.
Skills Reference
Build & Environment
- axiom-build — Use when ANY iOS or macOS build fails, a crash log needs diagnosing, a test run crashes, Xcode misbehaves, or an environment issue blocks work before code is the suspect.
- axiom-games — Use when building ANY 2D or 3D game with SpriteKit, SceneKit, or RealityKit, or adding touch controls or game controller support.
- 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-shipping — Use when preparing an app for App Store submission, handling rejections or appeals, managing App Store Connect and Xcode Cloud, or triaging TestFlight/Sentry crash corpora.
- axiom-xcode-mcp — Use when connecting to Xcode via MCP, using xcrun mcpbridge or the headless mcp-server, or working with ANY Xcode MCP tool (XcodeRead, BuildProject, RunSomeTests, RenderPreview).
UI & Design
- axiom-accessibility — Use when fixing or auditing ANY accessibility issue — VoiceOver, Dynamic Type, color contrast, touch targets, WCAG compliance, App Store accessibility review.
- axiom-design — Use when making visual or interaction design decisions for an Apple app — HIG patterns, Liquid Glass, SF Symbols, typography, app entry-point and auth-flow structure.
- axiom-swiftui — Use when building, fixing, or improving ANY SwiftUI UI — views, navigation, layout, animations, gestures, debugging, iOS 26 features, iPhone Duo, view-level performance, feature architecture.
- axiom-uikit — Use when bridging UIKit and SwiftUI, modernizing UIKit apps (scene lifecycle, resizability), debugging Auto Layout, Combine, TextKit, PencilKit, or UIKit animations.
Code Quality
- axiom-concurrency — Use when writing ANY async code, actors, or threads in an Apple-platform app, or seeing ANY concurrency error.
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.
- 1mo ago Changed 47aee5449462
- 1mo ago Changed 8e70d804c51b
- 1mo ago Changed 866cff034a1b
- 1mo ago Changed cb7e70300876
- 1mo ago First seen · 119 lines · 19 tokens per session scan A 4f77a41d58f0
ask is a command published in the GitHub repository CharlesWiltgen/Axiom (1,223 stars, last pushed today), licensed MIT. It adds 19 tokens to every session and 1,890 once invoked, about $0.0001 per session on Opus 5.5. 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 2026-08-30.
Other commands, from other repositories
erne-native-module
ERNE — Create native modules with sequential native-bridge-builder then code-reviewer agents.
initialize-ios
Manual override: initialize ast-index for iOS/Swift/ObjC project.
kmp-implement-feature
Build a new KMP feature end-to-end, layer by layer, with the full Koin 4 / Ktor 3 / SQLDelight 2 / CMP 1.11 stack wired correctly from the start.
create-activity
Generate a Jetpack Compose screen with proper architecture.
swift-new
Create new Swift project or component.
checklist
Generate a custom checklist for the current feature based on user requirements.