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 agentmods add instructions/nagarjuna2997/ios-agent-skill/agents-mdgit clone --depth 1 https://github.com/Nagarjuna2997/ios-agent-skillWrote 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/instructions/nagarjuna2997/ios-agent-skill/agents-md)<a href="https://agentmods.dev/instructions/nagarjuna2997/ios-agent-skill/agents-md"><img src="https://agentmods.dev/badge/instructions/nagarjuna2997/ios-agent-skill/agents-md.svg" alt="Measured on agentmods" 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 | $0.15145 | $0.15145 |
| Opus 5 | $0.07573 | $0.07573 |
| Sonnet 5 | $0.03029 | $0.03029 |
| Haiku 4.5 | $0.01515 | $0.01515 |
Grade A, and why
ios-agent-skill AGENTS.md 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 5d 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
2 near-identical copies found in the catalogue:
- ios-agent-skill CLAUDE.md — 100% identical, 0 lines differ
- ios-agent-skill GEMINI.md — 100% identical, 0 lines differ
How it starts
The opening of the file, as written. The whole thing — 766 lines — stays where its author put it; the contents beside it link to each section on GitHub.
iOS Agent Skill — Claude AI Expert iOS/Swift Developer
You are an expert iOS/Swift developer with deep knowledge of all Apple platforms and frameworks. You write production-ready, error-free Swift code following Apple's latest APIs, design patterns, and Human Interface Guidelines.
When to Load This Skill
Load this skill when any of the following is true. When none are true, do not load it — it is a large context cost for non-Apple work.
Load when:
- Writing, reviewing, or refactoring
.swiftfiles, or any Swift/SwiftUI/UIKit code - Designing or reviewing iOS app architecture — MVVM, Clean Architecture, coordinators, routing, dependency injection
- Building UI that must meet Apple's HIG, contrast, dark-mode, or Dynamic Type standards
- Working with any Apple framework: SwiftData, Core Data, CloudKit, StoreKit, HealthKit, WidgetKit, App Intents, ActivityKit, CoreML, Vision, ARKit, RealityKit, SceneKit, Metal, MapKit, AVFoundation, CryptoKit, and the rest
- Answering Swift concurrency questions —
async/await, actors,@MainActorisolation,Sendable, structured concurrency - Targeting iOS, iPadOS, macOS, watchOS, tvOS, or visionOS
- Preparing an App Store submission, or auditing performance, security, accessibility, or test coverage on an Apple platform
Do not load when:
- The work is on Android, React Native, Flutter, or a web frontend — even if the product also ships an iOS app
- The question is about Swift on the server (Vapor, Hummingbird) with no Apple-platform UI
- The task is generic Git, CI, or shell work that happens to live in an iOS repository
Loading the right document
SKILL.md is the always-on brain: rules that apply to every response. The docs/, patterns/, templates/, and checklists/ trees are loaded on demand. Consult them by trigger:
| Trigger | Load |
|---|---|
| Any new screen or view | docs/swiftui/views-and-controls.md, docs/design/design-tokens.md |
State, @Observable, or a view model |
docs/swiftui/state-and-data-flow.md, patterns/mvvm.md |
Swift from scratch, Swift language memory, Apple Swift docs coverage, ARC, ownership, lifetime, or deinit behavior |
docs/swift/swift-brain.md, docs/swift/swift-language.md, docs/swift/swift-standard-library.md, docs/swift/memory-lifetime.md, docs/apple-docs-reference.md |
async, actors, Sendable, isolation warnings |
docs/swift/swift-concurrency.md |
| More than two screens, or any deep link | docs/swiftui/deep-linking-and-routing.md |
| Layered architecture, use cases, DI | patterns/clean-architecture.md |
| Background import, sync, or "not thread safe" | docs/frameworks/data-concurrency.md |
| Test doubles, previews, debug menus | docs/testing/mocking-strategy.md |
| Evaluating prompts, model outputs, model-as-judge, or tool-call correctness | docs/testing/evaluations.md |
| Apple Developer Documentation navigator, 404 documentation items, Technology Overviews, Sample Code, HIG, Downloads, Technotes, Videos, Forums, Support, Account, Programs, Events, or broad Apple docs memory | docs/apple/documentation-navigator-brain.md, docs/apple/a-section-memory.md, docs/apple/b-m-section-memory.md, docs/apple/n-z-section-memory.md, docs/apple/resources-support-memory.md, docs/apple/coverage-status.md |
| User gives an app description and wants the AI to create the full build prompt, features, screens, and colors | docs/tooling/app-description-workflow.md, docs/design/design-tokens.md, docs/design/color-system.md |
| Sign in with Apple, passkeys, OAuth, token storage | docs/frameworks/authentication-services.md |
| Face ID, Touch ID, biometric unlock, Keychain access control | docs/frameworks/local-authentication.md |
| Any chart, graph, or plot | docs/frameworks/swift-charts.md |
| Sockets, TCP/UDP, custom protocols, connectivity monitoring | docs/frameworks/network-framework.md |
| FFT, spectrogram, vectorised math, vImage, BLAS/LAPACK, simd | docs/frameworks/accelerate.md |
Custom .aimodel / .aimodelc, Core AI, model specialization, coreai-build |
docs/frameworks/core-ai.md |
| AI & Machine Learning resources, Core AI vs Foundation Models vs Core ML, Vision, Natural Language, Speech, Sound, Translation, MLX, AI HIG, or Apple ML research | docs/ai/machine-learning-brain.md, docs/ai/README.md |
App-local RAG, SpotlightSearchTool, or private indexed content for Foundation Models |
docs/frameworks/core-spotlight-rag.md |
| New 3D, AR rendering, USDZ, spatial entities | docs/frameworks/realitykit.md, docs/frameworks/arkit.md |
Existing SceneKit scene graphs, .scnassets, ARSCNView |
docs/frameworks/scenekit.md, then docs/frameworks/realitykit.md for migration |
| Custom GPU rendering, compute kernels, Metal shaders | docs/frameworks/metal.md |
| Scaffolding a project, or deciding where a tool writes its files | docs/tooling/project-scaffolding.md |
| Colors, spacing, theming, glass effects | docs/design/design-tokens.md, docs/design/color-system.md |
| Rebuilding on the iOS 26+ SDK, or auditing an app after it | docs/design/liquid-glass-adoption.md |
| iOS 27 SwiftUI reordering, custom-container swipe actions, adaptive toolbars | docs/swiftui/ios-27-interactions.md |
| A named Apple framework | the matching docs/frameworks/** file, or docs/frameworks/extended-apple-frameworks.md for catalog-covered extended frameworks |
| A named platform | the matching docs/platforms/*.md file |
| Deciding how to execute — delegate, loop, or scale out | docs/orchestration/router.md |
| Defining or invoking a subagent | docs/orchestration/subagents.md |
| Repeating work until a condition holds | docs/orchestration/looping.md |
| About to report that something works | docs/orchestration/verification.md |
| A codebase-wide migration or many isolated PRs | docs/orchestration/dynamic-workflows.md |
| Enforcing a rule automatically | docs/orchestration/hooks.md |
On-device LLM, @Generable, tool calling, Dynamic Profiles |
docs/frameworks/foundation-models.md |
| Foundation Models terminal experiments or Instruments profiling | docs/tooling/fm-cli.md, docs/tooling/foundation-models-instruments.md |
| Siri, Apple Intelligence, Private Cloud Compute, privacy claims | docs/frameworks/apple-intelligence.md |
| App Intents schemas, semantic indexing, View Annotations | docs/frameworks/app-intents-intelligence.md, docs/frameworks/app-intents.md |
| Xcode coding agents, agent-assisted localization or testing | docs/tooling/xcode-27-agents.md |
| Device/simulator testing, accessibility passes, iPad resizability | docs/tooling/device-hub.md |
| Runtime simulator automation, Xcode builds, app launch, screenshots, video, logs, UI driving | docs/tooling/ios-simulator-mcp.md, ios-simulator-mcp/ |
| Premium UI iteration from screenshots or videos | docs/tooling/visual-iteration-loop.md |
| Future MCP review tools for UI/UX, motion, 3D, AI, and evaluations | docs/mcp/vnext-analysis-tools.md |
| Splash screen, logo intro, cinematic app opening | patterns/motion/splash-screens.md |
| Choosing a deployment target or writing an availability guard | docs/compatibility-matrix.md |
| Enabling Swift 6 mode, or fixing strict-concurrency errors | docs/migration/swift-6-migration.md |
| Raising a deployment target, or rebuilding on a new SDK | docs/migration/ios-deployment-migration.md |
| Upgrading Xcode, or a build that broke right after one | docs/migration/xcode-migration.md |
| Reviewing an existing Swift project for defects | docs/mcp/tools.md — the MCP server analyzes it directly |
| Retain cycles, leaks, secrets, flaky tests, or scroll hitches | docs/mcp/tools.md, docs/swift/memory-lifetime.md — review_swift_memory, _security, _testing, _performance |
Xcode Memory Graph, Instruments Allocations, memory pressure, jetsam, EXC_BAD_ACCESS, sanitizers, or MetricKit memory evidence |
docs/tooling/xcode-memory-debugging.md, docs/apple-docs-reference.md, docs/performance/README.md |
| Authoring or reviewing an Agent Skill, or a subagent that will not invoke | docs/mcp/tools.md — lint_skill checks frontmatter, tool grants, and mirrors |
| Deciding whether an Apple technology is covered, planned, skipped, or out of scope | docs/apple-framework-index.md, frameworks.json |
| Apple Intelligence, AI framework routing, Visual Intelligence, private RAG, AI security | docs/ai/README.md |
| Professional UI/UX system, visual hierarchy, state design, iPad adaptation | docs/design/README.md, ui-ux-designer |
| Native motion, animation purpose, GSAP/Anime.js-style concepts | docs/animation/README.md, docs/animation/web-animation-concepts.md, motion-designer |
| Graphics, 3D, spatial, RealityKit, Model3D, ARKit, Metal routing | docs/graphics/README.md, 3d-experience-designer, realitykit-expert, metal-expert |
| Data, persistence, migration, sync, offline-first | docs/data/README.md |
| Networking, connectivity, retries, caching, Bluetooth/accessory routing | docs/networking/README.md |
| Security, authentication, privacy, permissions, entitlements, threat modeling | docs/security/README.md, security-reviewer |
| Performance measurement, hitches, launch, memory, GPU, MetricKit | docs/performance/README.md, performance-reviewer |
| XCUIAutomation, UI test identifiers, running-app validation | docs/testing/xcuiautomation.md, testing-expert |
| VisionKit, document scanning, Live Text-style UI, system visual lookup | docs/frameworks/visionkit.md |
| Anime.js, GSAP, Framer Motion, Three.js, WebGL, or WKWebView routing | docs/web/README.md, docs/web/native-vs-web-animation.md, webkit-expert |
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.
- 5d ago First seen · 766 lines · 15,145 tokens per session scan A d81429272da2
ios-agent-skill AGENTS.md is an instructions file published in the GitHub repository Nagarjuna2997/ios-agent-skill (32 stars, last pushed 18d ago), licensed MIT. It adds 15,145 tokens to every session, about $0.0757 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 2026-08-30.
Other instructions, from other repositories
swift-security-skill CLAUDE.md
Instructions for ivan-magda/swift-security-skill, a project described as: AI agent skill for secure credential storage & cryptography on Apple platforms - Keychain Services, biometric auth, CryptoKit, and OWASP compliance (iOS 13–26+).
ios-simulator-skill CLAUDE.md
Instructions for conorluddy/ios-simulator-skill, covering claude.md - developer guide, project overview, project structure, architecture patterns and pattern 1: class-based script design.
nopua AGENTS.md
Instructions for wuji-labs/nopua, covering nopua · codex 入仓规则, 一 · 项目定位, 二 · 起手必读, 三 · 工程与研究纪律 and 四 · 对外署名.
agent-toolkit AGENTS.md
AGENTS.md instructions for ulises-jeremias/agent-toolkit, covering agents.md — ai agent contract, what this toolkit does, repository structure, operating rules and how to add a skill.
ios-WK-UI-WebView AGENTS.md
Instructions for emilianoeloi/ios-WK-UI-WebView, covering agents.md, build, structure, conventions and skills.
xtool CLAUDE.md
Instructions for 2389-research/xtool, covering xtool plugin, skills included, using-xtool (main skill), key patterns and xtool is not xcodegen.