SwiftUI Agent Skills Guide

The most common problem with AI-generated SwiftUI is not invalid syntax, but code that merely looks correct: unclear state ownership, outdated navigation patterns, fuzzy concurrency boundaries, or an API that does not exist. Agent Skills turn a general model into a collaborator with explicit Apple-platform engineering constraints.

What exactly is an Agent Skill?

A Skill is typically a directory containing a SKILL.md file. It tells coding agents such as Codex, Claude Code, and Cursor when to activate a capability, which references to read first, what rules to follow, and how to format the result. It is neither an Xcode extension nor a Swift package; think of it as a team engineering handbook plus a focused knowledge pack for AI.

Unlike one enormous prompt containing every rule, Skills can load only when relevant. Animation guidance appears for SwiftUI animation work, StoreKit purchase and verification rules appear for commerce tasks, and performance guidance loads when debugging scrolling. This task-specific context is usually more accurate and token-efficient.

The two approaches at a glance

Approach one: turn Xcode documentation into an AI source of truth

Its most valuable design choice is the explicit rule that every factual claim and API must be grounded in local /docs. The agent selects documentation before coding and cites the files used during review. If a type or API is absent, it should acknowledge uncertainty instead of inventing a plausible name.

The extracted material goes beyond SwiftUI layout. It includes App Intents, AlarmKit, StoreKit, WebKit, SwiftData inheritance, Swift Concurrency, Liquid Glass, visionOS widgets, and low-level performance primitives such as InlineArray and Span.

Limitations to keep in mind

• Requires macOS and Xcode 26 or later. The Skill should not provide SwiftUI guidance until the documentation directory has been populated.
• It is a broad entry point. Complex projects still need a focused request, such as “review state ownership and navigation against Apple documentation.”
• The local Xcode version determines the reference version, so teams should align their toolchains to avoid conflicting availability conclusions.

Approach two: 84 composable iOS Skills

This repository excels at precise routing. You do not need the entire Apple development corpus in every context: a subscription app using SwiftData, StoreKit 2, App Intents, and WidgetKit can install those Skills alongside SwiftUI patterns, Swift Concurrency, testing, and accessibility.

Below is the complete 84-Skill catalog as of this article’s update. Expand each group to check coverage against your project stack.

How to choose: start with the task, not the count

Scenario A: starting to use AI for SwiftUI

Install swiftui-skills first for Apple documentation constraints, then add swiftui-patterns, swiftui-navigation, swift-concurrency, swift-testing, and ios-accessibility from the 84-Skill collection. These five cover the most common failure points in new projects.

Scenario B: building a feature in an existing product

Choose by current technology, not by what might be useful someday. Add storekit for subscriptions; app-intents and widgetkit for system surfaces; swiftdata or core-data for data-heavy apps; and apple-on-device-ai for on-device AI products.

Scenario C: code review and reliability work

Prioritize swiftui-performance, debugging-instruments, metrickit, swift-security, ios-accessibility, and app-store-review. This set acts more like a release gatekeeper than a code generator.

Installation: general agents and Codex

Install the local Apple documentation Skill

# Install directly and extract documentation from Xcode
curl -fsSL https://swiftui-skills.ameyalambat.com/install | bash

# Or use the skills CLI
npx skills add ameyalambat128/swiftui-skills

Before piping a remote script into your shell, review the installer in the repository. After installation, run setup.sh from the installed Skill directory and restart the agent session so it can discover the new Skill.

Interactively select from the 84-Skill collection

# Open the interactive picker and choose Skills and target agents
npx skills add dpearson2699/swift-ios-skills

# Install selected capabilities only
npx skills add dpearson2699/swift-ios-skills \
  --skill swiftui-patterns \
  --skill swift-concurrency \
  --skill swift-testing

# Check and update
npx skills check
npx skills update

Install a single Skill in Codex

$skill-installer install \
  https://github.com/dpearson2699/swift-ios-skills/tree/main/skills/swiftui-patterns

Replace the final directory with any Skill name from the catalog. Project-specific rules belong in project scope; reusable SwiftUI and engineering guidance belongs in personal shared scope.

A more reliable combined workflow

1. Declare the goal and deployment target. Tell the agent whether the task is a feature, refactor, or review, and specify the minimum iOS version so new APIs are not used unconditionally.
2. Let the source-of-truth layer select documentation first. Ask swiftui-skills to list the Apple documents and availability constraints used for the task.
3. Load only task-specific Skills. Use swiftui-navigation for navigation and storekit for purchases instead of adding the entire catalog to one task.
4. Require complete validation. Ask the agent to build the target, run tests, and check Dynamic Type, VoiceOver, and dark mode for UI changes.
5. Capture decisions in project rules. Repeated architecture decisions should live in a project Skill or AGENTS.md instead of being renegotiated for every task.

A reusable task prompt can begin like this:

Use local Apple documentation as the API source of truth,
and use swiftui-patterns, swift-concurrency, and swift-testing.
Goal: implement a testable asynchronous loading screen for an iOS 26 app.
List the selected documentation and state ownership first, then modify the code, build, and run tests.
Do not introduce an architecture that the project does not already use.

Versions and licensing: two final checks

Apple platform APIs move quickly. This article was checked against a July 6, 2026 swiftui-skills commit and a July 4, 2026 swift-ios-skills commit. Repository content, supported versions, and Skill counts may change. Always verify beta frameworks against the current Xcode SDK.

The licenses also differ: swiftui-skills uses MIT, while swift-ios-skills uses PolyForm Perimeter 1.0.0. It allows app development and closed-source commercial workflows but restricts repackaging the content as a competing product. Read the upstream LICENSE before team distribution, modification, or commercial integration.

Frequently asked questions