A set of development standards for iOS and iPadOS apps, Apple’s mobile operating systems, targeting specified versions of Xcode and the iOS SDK. It covers app targets and extensions and identifies when related Swift, macOS, and security rules apply.

Use it when building or reviewing iPhone and iPad apps, widgets, notification-service extensions, or App Intents.

It gives an agent platform-specific rules instead of applying mobile or desktop assumptions to the wrong code. It also helps separate iOS changes from deployment-target, migration, and persistence decisions.

ios — Skill for Claude Code and Codex by ndisisnd/cook

Install

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.

Any agent

npx skills add ndisisnd/cook --skill ios

Clone the repo

git clone --depth 1 https://github.com/ndisisnd/cook

Made for: Claude Code, Codex.

Wrote 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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/ndisisnd/cook/ios/github.svg)](https://agentmods.dev/skills/ndisisnd/cook/ios)

Your own site

<a href="https://agentmods.dev/skills/ndisisnd/cook/ios"><img src="https://agentmods.dev/badge/skills/ndisisnd/cook/ios/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/ndisisnd/cook/ios"><img src="https://agentmods.dev/badge/skills/ndisisnd/cook/ios.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 81 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 1,636 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Token cost

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	$0.00081	$0.01636
Opus 5.5	$0.00032	$0.00654
Sonnet 5.5	$0.00016	$0.00327
Haiku 4.5	$0.00008	$0.00164

Measured 19d ago against content hash aa14623ceb68, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

ios 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 19d 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.

standards/ios/SKILL.md · 101 lines

How it starts

The opening of the file, as written. The whole thing — 101 lines — stays where its author put it; the contents beside it link to each section on GitHub.

iOS Standards

Target: iOS/iPadOS 18+ deployment, built with Xcode 27 and the iOS 27 SDK. Default load: this file only.

Scope. iOS/iPadOS app targets and their extensions (widgets, notification service, App Intents). Not watchOS/visionOS. Info.plist/.entitlements globs also match the macOS shelf; decide the platform first:

iOS when SDKROOT = iphoneos, the file sits under ios/, or code imports UIKit/ActivityKit/WidgetKit.
macOS when SDKROOT = macosx or code imports AppKit → standards/macos/. Multiplatform targets: apply each shelf to its own #if os(...) branch.

Pairs with: Swift rules → standards/swift/; universal → standards/global/; secrets → global/refs/security.md. Platform-neutral SwiftUI guidance lives on the macOS shelf (skip window/menu-bar parts): state and persistence → <SKILLS>/macos/refs/architecture-and-state.md; strings and formatting → <SKILLS>/macos/refs/localization.md.

In existing code, match conventions; propose deployment-target bumps, UIKit→SwiftUI migrations, and persistence changes as separate tasks.

P0 — Platform Correctness

Baseline (Oct 2026)

Build with Xcode 27 / iOS 27 SDK. App Store Connect has rejected uploads built with anything older than Xcode 26 / iOS 26 SDK since 2026-04-28. SDK version ≠ deployment target.
New apps: deployment target iOS 18 (covers 27, 26, 18). iOS 17 is the practical floor: it keeps @Observable and SwiftData but loses the Tab type, zoom transitions and control widgets. Gate newer APIs (Liquid Glass = iOS 26) with if #available.
Three iOS 27 SDK rules break Xcode 26 builds:
- UIScene lifecycle is mandatory. A UIKit app with no scene manifest fails to launch (SwiftUI App apps comply) → refs/app-lifecycle-and-navigation.md.
- A launch screen is mandatory (UILaunchScreen or UILaunchStoryboardName in Info.plist). Missing → upload rejected with ITMS-90870.
- UIDesignRequiresCompatibility is ignored; Liquid Glass is always on. Re-check screens and re-baseline snapshots.

Read the full file on GitHub · 101 lines

Files

What ships with it

7 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.

Changes

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.

19d ago First seen · 101 lines · 81 tokens per session scan A aa14623ceb68

Subscribe to this mod's changes

ios is a skill published in the GitHub repository ndisisnd/cook (2 stars, last pushed 19d ago), licensed MIT. It adds 81 tokens to every session and 1,636 once invoked, about $0.0003 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 2026-10-23.

Kotlin and Swift Languages Mobile claude claude-skills standards vibe-coding

ios next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
iosndisisnd/cook	Skill	2	19d ago	MIT	A	81	Claude Code, Codex
kotlin-specialistJeffallan/claude-skills	Skill	12k	yesterday	MIT	A	86	Claude Code
swift-expertJeffallan/claude-skills	Skill	12k	yesterday	MIT	A	98	Claude Code
init-xcode-appglebis/claude-skills	Skill	413	yesterday	MIT	A	88	Claude Code, Codex
android-developmentMindrally/skills	Skill	303	1mo ago	Apache-2.0	A	27	Claude Code
swift-devtenequm/skills	Skill	39	6d ago	MIT	A	67	Claude Code, Codex
swift-macostenequm/skills	Skill	39	6d ago	MIT	A	62	Claude Code, Codex