What is ios-architect?

A guide for designing the structure of iOS apps, including how code is split into modules, how dependencies are supplied, how screens connect, and how app data is stored. SwiftData is Apple’s framework for storing app data.

Use it when starting or reorganizing an iOS app, deciding on modules, dependency injection, navigation, or data-layer migrations, and reviewing architecture.

It helps choose an app structure that fits the project’s size and complexity, and guides changes such as moving from Core Data to SwiftData.

ios-architect — Skill for Claude Code and Codex by matiastripode

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 matiastripode/ios-agent-skills --skill ios-architect

Clone the repo

git clone --depth 1 https://github.com/matiastripode/ios-agent-skills

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/matiastripode/ios-agent-skills/ios-architect/github.svg)](https://agentmods.dev/skills/matiastripode/ios-agent-skills/ios-architect)

Your own site

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

Per session 30 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 537 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	$0.00030	$0.00537
Opus 5.5	$0.00012	$0.00215
Sonnet 5.5	$0.00006	$0.00107
Haiku 4.5	$0.00003	$0.00054

Measured 2mo ago against content hash 47742ea7c490, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

ios-architect 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 2mo 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.

.agents/skills/ios-architect/SKILL.md · 58 lines

How it starts

The opening of the file, as written. The whole thing — 58 lines — stays where its author put it; the contents beside it link to each section on GitHub.

iOS Architect

An agent skill for making iOS architecture decisions: project structure, module design, navigation patterns, and data layer choices.

When to Activate

User asks about project structure or architecture
User is starting a new iOS project
User asks about modularization, navigation, or dependency injection
User asks about migrating from Core Data to SwiftData
Code review reveals architectural concerns

Decision Tree

What is the architectural question?
├── Project Structure / Modularization
│   ├── Solo developer, small app → Single target, folder-based organization
│   ├── Solo developer, growing app → Extract shared modules (networking, design system)
│   ├── Team, medium app → Feature modules via SPM
│   └── Team, large app → Full modular architecture
│   → Read references/modular-architecture.md
├── Dependency Management
│   ├── How to inject dependencies? → references/dependency-injection.md
│   ├── SwiftUI app → @Environment, constructor injection
│   └── UIKit app → Constructor injection, DI container
├── Navigation
│   ├── Simple linear flow → NavigationStack
│   ├── Complex multi-flow app → Coordinator pattern
│   ├── Deep linking required → Router + URL handling
│   └── Tab-based with nested nav → NavigationStack per tab
│   → Read references/navigation-patterns.md
└── Data Layer
    ├── New project → SwiftData (if iOS 17+ minimum)
    ├── Existing Core Data → Evaluate migration
    └── Migration path? → references/swiftdata-migration.md

Questions to Ask Before Recommending

What is the deployment target (minimum iOS version)?
Solo developer or team?
Expected app size (number of screens/features)?
Is this a new project or refactoring an existing one?
Any existing architectural patterns already in use?

Reference Documents

references/modular-architecture.md - SPM modules, feature modules, dependency rules
references/dependency-injection.md - DI patterns, containers, testability
references/navigation-patterns.md - NavigationStack, Coordinator, deep linking
references/swiftdata-migration.md - Core Data to SwiftData migration path

Read the full file on GitHub · 58 lines

Files

What ships with it

4 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.

2mo ago First seen · 58 lines · 30 tokens per session scan A 47742ea7c490

Subscribe to this mod's changes

ios-architect is a skill published in the GitHub repository matiastripode/ios-agent-skills (2 stars, last pushed 7mo ago), licensed MIT. It adds 30 tokens to every session and 537 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 2026-08-31.

Kotlin and Swift Languages Mobile

ios-architect next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
ios-architectmatiastripode/ios-agent-skills	Skill	2	7mo ago	MIT	A	30	Claude Code, Codex
wear-compose-m3android/skills	Skill	10k	yesterday	Apache-2.0	A	91	Claude Code
ink-custom-brush-builderandroid/skills	Skill	10k	yesterday	Apache-2.0	A	159	Claude Code
kotlin-specialistJeffallan/claude-skills	Skill	12k	7d ago	MIT	A	86	Claude Code
swiftui-devOrkas-AI/Orkas	Skill	9.0k	yesterday	MIT	A	3	Claude Code, Codex
build-android-binarymicrosoft/power-platform-skills	Skill	1.1k	yesterday	MIT	A	150	Claude Code
kotlin-androidericrisco/rsc-harness	Skill	503	2d ago	MIT	A	78	Claude Code, Codex