CharlesWiltgen/Axiom plugin for Grok Build

Name: CharlesWiltgen/Axiom
Author: CharlesWiltgen

Community Claude Code plugin, installs in GrokPluginDevelopment

Battle-tested Claude Code skills for modern xOS (iOS, iPadOS, watchOS, tvOS) development

How to install CharlesWiltgen/Axiom in Grok Build

1. Add this repo as a plugin marketplace in Grok Build (once per computer):

grok plugin marketplace add CharlesWiltgen/Axiom

2. Install the plugin:

grok plugin install axiom@CharlesWiltgen/Axiom --trust

✓ Install-checked in Grok Buildchecked Oct 18, 2026

Review before you trust it. --trust lets this plugin's hooks, MCP servers and scripts run code on your computer. It's a community repo that neither xAI nor GrokStacks has reviewed, so read its code first.

Then start a new Grok session, or press r in /plugins, to load it.

Inside Grok Build: type /plugins, open the Marketplace tab, press a and add CharlesWiltgen/Axiom, then select axiom and press i.

Command format: Grok Build's plugin guide

What we checked: on Oct 18, 2026 it installed with grok 1.0.62 and Grok found 44 skills, 17 slash commands, 1 subagent. That's an install check only: we haven't run it in a live Grok session.

What it contains

Skills (25)

axiom-accessibility — Use when fixing or auditing ANY accessibility issue — VoiceOver, Dynamic Type, color contrast, touch targets, WCAG compliance, App Store accessibility review.
axiom-ai — Use when implementing, testing, or evaluating ANY Apple Intelligence, on-device AI, or speech-to-text feature. Covers Foundation Models, @Generable, LanguageModelSession, Tool protocol, eval suites, model-as-judge scoring, SpeechTranscriber
axiom-apple-docs — Use when you need Apple's own documentation or a Swift compiler diagnostic explained rather than recalled.
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. Covers build failures, dependency conflicts, simulator diagnostics.
axiom-concurrency — Use when writing ANY async code, actors, or threads in an Apple-platform app, or seeing ANY concurrency error. Covers Swift 6 concurrency, @MainActor, Sendable, data races, async/await patterns.
axiom-data — Use when working with ANY data persistence, database, storage, CloudKit, migration, or serialization in an Apple app. Covers SwiftData, Core Data, GRDB, SQLite, Realm, CloudKit sync, file storage, Codable, migrations.
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-games — Use when building ANY 2D or 3D game with SpriteKit, SceneKit, or RealityKit, or adding touch controls or game controller support. Covers scene graphs, ECS, physics, actions, game loops, rendering, TouchController, GCController.
axiom-graphics — Use when working with ANY GPU rendering, Metal, OpenGL migration, shaders, 3D content, RealityKit, AR, USD/USDZ files, or display performance. Covers Metal migration, shader conversion, RealityKit ECS, RealityView, USDKit, ProMotion.
axiom-health — Use when working with HealthKit, WorkoutKit, health data, workouts, or fitness features on iOS or watchOS. Covers permissions, queries, background delivery, custom workouts, multidevice coordination.
axiom-integration — Use when work crosses into Apple's system surfaces rather than your own UI or data — Siri and Shortcuts, widgets, Live Activities, in-app purchase, localization, privacy prompts, alarms, timers, calendar, reminders, contacts, SharePlay, VoI
axiom-location — Use when implementing location services, maps, geofencing, or debugging location/MapKit issues. Covers Core Location, CLMonitor, MapKit, annotations, directions.
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-media — 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
axiom-networking — Use when implementing or debugging ANY network connection, API call, or socket in an Apple app. Covers URLSession, Network.framework, NetworkConnection, connection diagnostics.
axiom-payments — Use when accepting ANY real-world payment — Apple Pay, Wallet passes, Tap to Pay, Orders in Wallet. NOT in-app purchase / digital content (use axiom-integration). Covers entitlements, certs, signing, App Review payment rules.
axiom-performance — Use when an Apple-platform app feels slow, memory grows, battery drains, or ANY performance issue needs diagnosing. Covers memory leaks, profiling, Instruments workflows, retain cycles, optimization.
axiom-security — Use when storing credentials securely, encrypting data, implementing passkeys, securing AI/agentic features against prompt injection, code signing, or managing certificates and provisioning profiles.
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. Covers checklists, metadata, privacy manifests, age ratings, export
axiom-swift — Use when the question is about Swift or its toolchain rather than a framework — modern idioms, noncopyable types, drag and drop, debug deep links, tvOS targets.
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-testing — Use when writing ANY test, debugging flaky tests, making tests faster, or choosing Swift Testing vs XCTest. Covers unit tests, UI tests, async testing, test architecture.
axiom-tools — Use when asking about Axiom skills or axbuild build/test capture, xclog console, xcsym .ips/MetricKit/.crash symbolication, xcui simulator UI/accessibility, or xcprof xctrace/CPU profiles.
axiom-uikit — Use when bridging UIKit and SwiftUI, modernizing UIKit apps (scene lifecycle, resizability), debugging Auto Layout, Combine, TextKit, PencilKit, or UIKit animations.
axiom-vision — Use when implementing ANY computer vision feature — image analysis, pose detection, person segmentation, subject lifting, text recognition, barcode scanning.

Subagents (15)

axiom:accessibility-auditor — Use this agent when the user mentions accessibility checking, App Store submission, code review, or WCAG compliance.
axiom:build-fixer — Use this agent when the user mentions Xcode build failures, build errors, or environment issues.
axiom:build-optimizer — Use this agent when the user mentions slow builds, build performance, or build time optimization.
axiom:camera-auditor — Use this agent to scan Swift code for camera, video, and audio capture issues including deprecated APIs, missing interruption handlers, threading violations, and permission anti-patterns.
axiom:codable-auditor — Use this agent when the user mentions Codable review, JSON encoding/decoding issues, data serialization audit, or modernizing legacy code.
axiom:concurrency-auditor — Use this agent when the user mentions concurrency checking, Swift 6 compliance, data race prevention, or async code review.
axiom:core-data-auditor — Use this agent when the user mentions Core Data review, schema migration, production crashes, or data safety checking.
axiom:crash-analyzer — Use this agent when the user has a crash log (.ips, MetricKit JSON, legacy .crash text, .xccrashpoint bundle, or pasted text) that needs analysis.
axiom:database-schema-auditor — Use this agent when the user mentions database schema review, migration safety, GRDB migration audit, or SQLite schema checking.
axiom:energy-auditor — Use this agent when the user mentions battery drain, energy optimization, power consumption audit, or pre-release energy check — timer abuse, polling patterns, continuous location, animation leaks, an
axiom:foundation-models-auditor — Use this agent when the user mentions Foundation Models review, on-device AI audit, LanguageModelSession issues, or @Generable/guardrail problems — including missing availability checks, manual JSON p
axiom:grdb-performance-auditor — Use this agent when the user mentions GRDB performance review, slow GRDB queries, app-group database setup audit, a ValueObservation that stopped updating, or pre-release GRDB scan.
axiom:health-check — Use this agent when the user wants a comprehensive project-wide audit, full health check, or scan across all domains.
axiom:iap-auditor — Use this agent when the user mentions in-app purchase review, IAP audit, StoreKit issues, purchase bugs, transaction problems, or subscription management.
axiom:iap-implementation — Use this agent when the user wants to add in-app purchases, implement StoreKit 2, or set up subscriptions.

Hooks (1)

hooks — PostToolUse, PreToolUse, SessionStart, UserPromptSubmit

About this listing

CharlesWiltgen/Axiom is a community plugin on GitHub by CharlesWiltgen, written as a Claude Code plugin that Grok Build installs. We install-checked it in Grok; we haven't run it in a live session or reviewed its code. When we installed it, Grok found 25 skills, 15 subagents, 1 hook. Its license is MIT. We checked commit 3b930bde3dd2. It's one of 409 listings in the Development category on GrokStacks.

CharlesWiltgen/Axiom FAQ

How do I install CharlesWiltgen/Axiom in Grok Build?

Add the repo as a marketplace with grok plugin marketplace add CharlesWiltgen/Axiom, then run grok plugin install axiom@CharlesWiltgen/Axiom --trust. Then start a new Grok session, or press r in /plugins, to load it.

Is CharlesWiltgen/Axiom an official Grok Build plugin?

No. CharlesWiltgen/Axiom is a community plugin on GitHub by CharlesWiltgen, not in xAI's official Grok Build marketplace. We checked that it installs and what Grok loads from it, but haven't run it in a live Grok session or reviewed its code.

What does CharlesWiltgen/Axiom include?

According to what Grok loaded in our install check, CharlesWiltgen/Axiom includes 25 skills, 15 subagents, 1 hook: axiom-accessibility, axiom-ai, axiom-apple-docs, axiom-build, axiom-concurrency, axiom-data….

Details

Type: Plugin
Category: Development
Source: Community Claude Code plugin, installs in Grok
License: MIT
Author: CharlesWiltgen
Source repo: https://github.com/CharlesWiltgen/Axiom
Checked commit: 3b930bde3dd2
Homepage: https://charleswiltgen.github.io/Axiom/
Checked by GrokStacks: Install-checked in Grok Build on Oct 18, 2026; not run in a live session

Something wrong or missing? Submit or improve this listing. Marketplace listings also refresh automatically every night.

For maintainers: badge and embeds

Maintain CharlesWiltgen/Axiom? Add the badge; it links to this page.

Markdown

[![Listed on GrokStacks](https://grokstacks.com/badge.svg)](https://grokstacks.com/p/charleswiltgen-axiom/)

HTML

<a href="https://grokstacks.com/p/charleswiltgen-axiom/"><img src="https://grokstacks.com/badge.svg" alt="Listed on GrokStacks" width="164" height="28"></a>

Embed card (static HTML and inline CSS, no JavaScript). Preview:

CharlesWiltgen/AxiomCommunity plugin for Grok Build · 25 skills, 15 subagents, 1 hookBattle-tested Claude Code skills for modern xOS (iOS, iPadOS, watchOS, tvOS) developmentView on GrokStacks →

<a href="https://grokstacks.com/p/charleswiltgen-axiom/" style="display:block;max-width:380px;box-sizing:border-box;padding:14px 16px;border:1px solid #2a2e3c;border-radius:12px;background:#0a0b0f;color:#e8eaf0;font:14px/1.45 -apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;text-decoration:none"><span style="display:block;font-size:16px;font-weight:700;color:#e8eaf0">CharlesWiltgen/Axiom</span><span style="display:block;margin:2px 0 8px;font-size:12px;color:#9aa0b1">Community plugin for Grok Build · 25 skills, 15 subagents, 1 hook</span><span style="display:block;margin:0 0 10px;color:#c9cdd8">Battle-tested Claude Code skills for modern xOS (iOS, iPadOS, watchOS, tvOS) development</span><span style="font-size:12px;font-weight:600;color:#7c9cff">View on GrokStacks →</span></a>

Markdown summary

**[CharlesWiltgen/Axiom on GrokStacks](https://grokstacks.com/p/charleswiltgen-axiom/)**: Community plugin for Grok Build with 25 skills, 15 subagents, 1 hook. Install: `grok plugin install axiom@CharlesWiltgen/Axiom --trust` (after `grok plugin marketplace add CharlesWiltgen/Axiom`)

More on badges, embeds and keeping your listing up to date: GrokStacks for plugin authors.

Also in Development

Abap2UI5

Build UI5 Apps Purely in ABAP

Community Claude Code plugin, installs in GrokPluginDevelopment

Accessibility Agents

Accessibility review agents for Claude Code, GitHub Copilot, and Claude Desktop. Eleven specialists that enforce WCAG 2.2 AA compliance so AI coding tools stop generating inaccessible code.

Community Claude Code plugin, installs in GrokPluginDevelopment