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Gemini Executive Synthesis

SwiftUI agent skill's knowledge base regarding access control modifiers and `@Previewable`.

Technical Positioning
Enhancing the SwiftUI agent skill's intelligence to correctly apply access control modifiers (`private`) while respecting specific SwiftUI attributes like `@Previewable`, preventing compilation errors and improving code quality.
SaaS Insight & Market Implications
The SwiftUI agent skill incorrectly applies `private` access control to `@State` variables that are also marked `@Previewable`, leading to compilation failures. This reveals a critical limitation in the agent's contextual understanding of SwiftUI-specific attributes and their implications for access control. For B2B SaaS offering AI-powered code generation or refactoring tools, such nuanced domain-specific knowledge is paramount. A tool that generates non-compiling code creates significant developer friction and erodes trust. The market demands agents that not only understand general coding principles but also the intricate rules and exceptions of specific frameworks, ensuring generated code is immediately functional and adheres to best practices.
Proprietary Technical Taxonomy
SwiftUI agent skill Claude Code Codex access control modifiers @State var @State private var @Previewable compile error

Raw Developer Origin & Technical Request

Source Icon GitHub Issue Mar 17, 2026
Repo: twostraws/SwiftUI-Agent-Skill
Update referenced for private state variables to leave alone in Preview macro

Trying this agent skill out, I agree with proper access control modifiers on `@State var awesomeNamedProperty: String` --> `@State private var awesomeNamedProperty: String`.

Using the agent skill, and asking the agent to add private to all of the state properties if found in review worked great! Except it didn't compile.

`@Previewable @State var previewOnlyProperty: String` cannot be made private.

Please update the skill to provide this knowledge to the agents that don't yet know about `@Previewable`.

Developer Debate & Comments

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Adjacent Repository Pain Points

Other highly discussed features and pain points extracted from twostraws/SwiftUI-Agent-Skill.

Extracted Positioning
Distribution and update mechanism for SwiftUI agent skills via a Claude Code Plugin Marketplace.
Leveraging a dedicated plugin marketplace to streamline the installation, updating, and discoverability of SwiftUI agent skills, enhancing user experience and adoption within the Claude Code ecosystem.
Extracted Positioning
SwiftUI agent skill's knowledge base regarding cross-platform development and OS version awareness.
Updating the SwiftUI agent skill's core instructions to reflect Apple's cross-platform development push and the existence of OS 26 across all platforms, ensuring the agent provides relevant and up-to-date advice.
Extracted Positioning
Installation path for SwiftUI agent skills in Claude Code.
Correcting the default or documented installation path for SwiftUI agent skills to ensure Claude Code properly loads them, aligning with the expected directory structure (`~/.claude/skills/swiftui-pro`).
Extracted Positioning
SwiftUI agent skill's knowledge for handling platform-specific view modifiers and compiler directives.
Equipping the SwiftUI agent skill with the intelligence to suggest and implement view modifier wrappers and extensions for platform-specific APIs, consolidating compiler directives and improving cross-platform code maintainability.
Extracted Positioning
SwiftUI agent skill's intelligence for `if #available` checks and minimum deployment targets.
Enhancing the SwiftUI agent skill to intelligently identify and flag redundant `if #available` checks based on the project's minimum deployment target, providing actionable recommendations without arbitrary code deletion.

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Issue Status

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Codex Codex-skills Codex-subagents