Updated today
by CharlesWiltgen
Axiom
Battle-tested Claude Code skills for modern xOS (iOS, iPadOS, watchOS, tvOS) development
1.2k GitHub stars (1,212)
+28 in 16 days
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- 30 skills (30 skills found in its SKILL.md files)
- 86 forks (86 forks)
- Today last update (Last updated today)
Install
Skills CLI
npx skills add CharlesWiltgen/Axiom
Asks which skills and agents to install. Just one: npx skills add CharlesWiltgen/Axiom --skill axiom-accessibility — add -g for every project.
Claude Code
git clone https://github.com/CharlesWiltgen/Axiomcp -r "Axiom/axiom-codex/skills/axiom-accessibility" ~/.claude/skills/
Copies the axiom-accessibility skill into ~/.claude/skills/ for every project (use .claude/skills/ for one project). Repeat for the other skills listed below.
Plugin
/plugin marketplace add CharlesWiltgen/Axiom
Run inside Claude Code if the repository ships a plugin marketplace, then pick plugins from /plugin.
Skills can run code on your machine — read the SKILL.md first.
What it does
In the author's own words, from each skill's SKILL.md — showing the first 30 of 123 files.
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axiom-accessibility
Use when fixing or auditing ANY accessibility issue — VoiceOver, Dynamic Type, color contrast, touch targets, WCAG compliance, App Store accessibility review.
axiom-codex/skills/axiom-accessibility/SKILL.md on GitHub (opens in a new tab) -
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, CoreML.
axiom-codex/skills/axiom-ai/SKILL.md on GitHub (opens in a new tab) -
axiom-analyze-crash
Use when the user has a crash log (.ips, MetricKit JSON, legacy .crash text, .xccrashpoint bundle, or pasted text) that needs analysis.
axiom-codex/skills/axiom-analyze-crash/SKILL.md on GitHub (opens in a new tab) -
axiom-analyze-swift-performance
Use when the user mentions Swift performance audit, code optimization, or performance review — ARC issues, allocation patterns, and generic specialization.
axiom-codex/skills/axiom-analyze-swift-performance/SKILL.md on GitHub (opens in a new tab) -
axiom-analyze-swiftui-performance
Use when the user mentions SwiftUI performance, janky scrolling, slow animations, or view update issues — expensive bodies, formatters, whole-collection dependencies, and missing lazy containers.
axiom-codex/skills/axiom-analyze-swiftui-performance/SKILL.md on GitHub (opens in a new tab) -
axiom-analyze-test-failures
Use when the user mentions flaky tests, tests that pass locally but fail in CI, race conditions in tests, or needs to diagnose WHY a specific test fails.
axiom-codex/skills/axiom-analyze-test-failures/SKILL.md on GitHub (opens in a new tab) -
axiom-analyze-triage
Use when the user wants to triage a CORPUS of production crashes/hangs from an aggregator (Sentry, App Store Connect) — grouped, counted issues — rather than a single crash file.
axiom-codex/skills/axiom-analyze-triage/SKILL.md on GitHub (opens in a new tab) -
axiom-apple-docs
Use when you need Apple's own documentation or a Swift compiler diagnostic explained rather than recalled.
axiom-codex/skills/axiom-apple-docs/SKILL.md on GitHub (opens in a new tab) -
axiom-audit-accessibility
Use when the user mentions accessibility checking, App Store submission, code review, or WCAG compliance.
axiom-codex/skills/axiom-audit-accessibility/SKILL.md on GitHub (opens in a new tab) -
axiom-audit-camera
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-codex/skills/axiom-audit-camera/SKILL.md on GitHub (opens in a new tab) -
axiom-audit-codable
Use when the user mentions Codable review, JSON encoding/decoding issues, data serialization audit, or modernizing legacy code.
axiom-codex/skills/axiom-audit-codable/SKILL.md on GitHub (opens in a new tab) -
axiom-audit-concurrency
Use when the user mentions concurrency checking, Swift 6 compliance, data race prevention, or async code review.
axiom-codex/skills/axiom-audit-concurrency/SKILL.md on GitHub (opens in a new tab) -
axiom-audit-core-data
Use when the user mentions Core Data review, schema migration, production crashes, or data safety checking.
axiom-codex/skills/axiom-audit-core-data/SKILL.md on GitHub (opens in a new tab) -
axiom-audit-database-schema
Use when the user mentions database schema review, migration safety, GRDB migration audit, or SQLite schema checking.
axiom-codex/skills/axiom-audit-database-schema/SKILL.md on GitHub (opens in a new tab) -
axiom-audit-energy
Use when the user mentions battery drain, energy optimization, power consumption audit, or pre-release energy check — timer abuse, polling patterns, continuous location, animation leaks, and background mode misuse.
axiom-codex/skills/axiom-audit-energy/SKILL.md on GitHub (opens in a new tab) -
axiom-audit-foundation-models
Use when the user mentions Foundation Models review, on-device AI audit, LanguageModelSession issues, or @Generable/guardrail problems — including missing availability checks, manual JSON parsing, and guardrail handling.
axiom-codex/skills/axiom-audit-foundation-models/SKILL.md on GitHub (opens in a new tab) -
axiom-audit-grdb-performance
Use 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-codex/skills/axiom-audit-grdb-performance/SKILL.md on GitHub (opens in a new tab) -
axiom-audit-iap
Use when the user mentions in-app purchase review, IAP audit, StoreKit issues, purchase bugs, transaction problems, or subscription management.
axiom-codex/skills/axiom-audit-iap/SKILL.md on GitHub (opens in a new tab) -
axiom-audit-icloud
Use when the user mentions iCloud sync issues, CloudKit errors, ubiquitous container problems, or asks to audit cloud sync.
axiom-codex/skills/axiom-audit-icloud/SKILL.md on GitHub (opens in a new tab) -
axiom-audit-liquid-glass
Use when the user mentions Liquid Glass review, iOS 26 UI updates, toolbar improvements, or visual effect migration.
axiom-codex/skills/axiom-audit-liquid-glass/SKILL.md on GitHub (opens in a new tab) -
axiom-audit-memory
Use when the user mentions memory leak prevention, code review for memory issues, or proactive leak checking — retain cycles, leaks, and Timer/observer patterns.
axiom-codex/skills/axiom-audit-memory/SKILL.md on GitHub (opens in a new tab) -
axiom-audit-networking
Use when the user mentions networking review, deprecated APIs, connection issues, or App Store submission prep.
axiom-codex/skills/axiom-audit-networking/SKILL.md on GitHub (opens in a new tab) -
axiom-audit-resize
Use when the user mentions window resizing support, resizable-window readiness, iPhone Mirroring compatibility, iPhone Duo readiness, scene-lifecycle migration checking, or preparing an app for the 27-cycle resizing model.
axiom-codex/skills/axiom-audit-resize/SKILL.md on GitHub (opens in a new tab) -
axiom-audit-spritekit
Use when the user wants to audit SpriteKit game code for common issues — physics bitmask issues, draw call waste, node accumulation, and action leaks.
axiom-codex/skills/axiom-audit-spritekit/SKILL.md on GitHub (opens in a new tab) -
axiom-audit-storage
Use when the user mentions file storage issues, data loss, backup bloat, or asks to audit storage usage.
axiom-codex/skills/axiom-audit-storage/SKILL.md on GitHub (opens in a new tab) -
axiom-audit-swiftdata
Use when the user mentions SwiftData review, @Model issues, SwiftData migration safety, or SwiftData performance checking.
axiom-codex/skills/axiom-audit-swiftdata/SKILL.md on GitHub (opens in a new tab) -
axiom-audit-swiftui-architecture
Use when the user mentions SwiftUI architecture review, separation of concerns, testability issues, or "logic in view" problems.
axiom-codex/skills/axiom-audit-swiftui-architecture/SKILL.md on GitHub (opens in a new tab) -
axiom-audit-swiftui-layout
Use when the user mentions SwiftUI layout review, adaptive layout issues, GeometryReader problems, or multi-device layout checking.
axiom-codex/skills/axiom-audit-swiftui-layout/SKILL.md on GitHub (opens in a new tab) -
axiom-audit-swiftui-nav
Use when the user mentions SwiftUI navigation issues, deep linking problems, state restoration bugs, or navigation architecture review.
axiom-codex/skills/axiom-audit-swiftui-nav/SKILL.md on GitHub (opens in a new tab) -
axiom-audit-testing
Use when the user wants to audit test quality, find flaky test patterns, speed up test execution, or prepare for Swift Testing migration.
axiom-codex/skills/axiom-audit-testing/SKILL.md on GitHub (opens in a new tab)
No skill matches that filter.
Review before you install
A skill is a set of instructions and scripts your agent will follow, and it can run code on your machine. Read the SKILL.md and any scripts first — this listing is not a security review.