# kelvinkosbab > Open-source publisher. Listings imported from github.com/kelvinkosbab — credited to the original author with their license. - **Listings:** 14 - **Total installs:** 0 - **Profile:** https://agentstack.voostack.com/s/kelvinkosbab - **Website:** https://github.com/kelvinkosbab ## Published listings - [Android Gradle Architecture Pro](https://agentstack.voostack.com/l/skill-kelvinkosbab-appbootstrapai-android-gradle-architecture-pro) — Skill · Free · security-reviewed — `agentstack add skill-kelvinkosbab-appbootstrapai-android-gradle-architecture-pro` Reviews multi-module Android Gradle builds against the Now in Android convention-plugin pattern — `build-logic/convention/` factoring, version-catalog discipline, AGP/Kotlin/Compose-compiler co-versioning, KSP over kapt. Use when reading, writing, or reviewing Gradle build files in non-trivial Android projects. - [Android Coroutines Pro](https://agentstack.voostack.com/l/skill-kelvinkosbab-appbootstrapai-android-coroutines-pro) — Skill · Free · security-reviewed — `agentstack add skill-kelvinkosbab-appbootstrapai-android-coroutines-pro` Deep-reviews Kotlin coroutines and Flow code for structured-concurrency correctness — scope and dispatcher discipline, cooperative cancellation, exception propagation, hot/cold flow patterns, and coroutine testing. Use when reading, writing, or reviewing concurrency-heavy Kotlin/Android code. - [Swift Docc Pro](https://agentstack.voostack.com/l/skill-kelvinkosbab-appbootstrapai-swift-docc-pro) — Skill · Free · security-reviewed — `agentstack add skill-kelvinkosbab-appbootstrapai-swift-docc-pro` Reviews and improves Swift documentation comments (DocC) for correctness, completeness, and clarity. Use when writing or reviewing public API documentation in Swift packages. - [Swift Concurrency Pro](https://agentstack.voostack.com/l/skill-kelvinkosbab-appbootstrapai-swift-concurrency-pro) — Skill · Free · security-reviewed — `agentstack add skill-kelvinkosbab-appbootstrapai-swift-concurrency-pro` Reviews Swift code for concurrency correctness, modern API usage, and common async/await pitfalls. Use when reading, writing, or reviewing Swift concurrency code. - [Coredata Swift6 Pro](https://agentstack.voostack.com/l/skill-kelvinkosbab-appbootstrapai-coredata-swift6-pro) — Skill · Free · security-reviewed — `agentstack add skill-kelvinkosbab-appbootstrapai-coredata-swift6-pro` Reviews Core Data code for Swift 6 strict concurrency compliance, modern context usage, and SPM compatibility. Use when reading, writing, or reviewing Core Data code under Swift 6. - [Xml To Compose Migration Pro](https://agentstack.voostack.com/l/skill-kelvinkosbab-appbootstrapai-xml-to-compose-migration-pro) — Skill · Free · security-reviewed — `agentstack add skill-kelvinkosbab-appbootstrapai-xml-to-compose-migration-pro` Reviews and assists migration from XML layouts + Fragments to Jetpack Compose. Covers incremental interop (AndroidView / ComposeView), layout translation (ConstraintLayout / LinearLayout / FrameLayout → Modifier), RecyclerView → LazyColumn with keys, Fragment → Composable, Navigation Component → Navigation-Compose, ViewModel bridging, and XML themes → MaterialTheme. - [Swift Logging Pro](https://agentstack.voostack.com/l/skill-kelvinkosbab-appbootstrapai-swift-logging-pro) — Skill · Free · security-reviewed — `agentstack add skill-kelvinkosbab-appbootstrapai-swift-logging-pro` Reviews Swift logging code using os.Logger for correct privacy markers, subsystem/category conventions, and appropriate log levels. Use when writing or reviewing logging code. - [Swiftui Pro](https://agentstack.voostack.com/l/skill-kelvinkosbab-appbootstrapai-swiftui-pro) — Skill · Free · security-reviewed — `agentstack add skill-kelvinkosbab-appbootstrapai-swiftui-pro` Comprehensively reviews SwiftUI code for best practices on modern APIs, maintainability, and performance. Use when reading, writing, or reviewing SwiftUI projects. - [Android Compose Pro](https://agentstack.voostack.com/l/skill-kelvinkosbab-appbootstrapai-android-compose-pro) — Skill · Free · security-reviewed — `agentstack add skill-kelvinkosbab-appbootstrapai-android-compose-pro` Deep-reviews Jetpack Compose code for recomposition stability, side-effect correctness, lazy-list performance, and state modeling. Use when reading, writing, or reviewing non-trivial Compose UI — especially when chasing jank, runaway recomposition, or effect bugs. - [Swift Error Handling Pro](https://agentstack.voostack.com/l/skill-kelvinkosbab-appbootstrapai-swift-error-handling-pro) — Skill · Free · security-reviewed — `agentstack add skill-kelvinkosbab-appbootstrapai-swift-error-handling-pro` Reviews Swift error handling for modern patterns including typed throws, Result vs throws, LocalizedError conformance, and async error propagation. Use when writing or reviewing Swift error types and throwing functions. - [AppBootstrapAI](https://agentstack.voostack.com/l/mcp-kelvinkosbab-appbootstrapai) — MCP server · Free · security-reviewed — `agentstack add mcp-kelvinkosbab-appbootstrapai` AI agent steering for Apple (Swift 6.4 / SwiftUI / visionOS / Foundation Models) and Android (Kotlin / Compose / Gradle / Gemini Nano). Rules + skills + MCP for code, a11y, localization, TestFlight/Play. One install.sh detects your stack, installs the right per-platform rules, and keeps them current for Claude/Copilot/Cursor/Gemini/Codex/Kiro. - [R8 Shrink Pro](https://agentstack.voostack.com/l/skill-kelvinkosbab-appbootstrapai-r8-shrink-pro) — Skill · Free · security-reviewed — `agentstack add skill-kelvinkosbab-appbootstrapai-r8-shrink-pro` Reviews Android R8 / ProGuard configuration for code-shrinking, optimization, and obfuscation. Covers `-keep` rule discipline, library `consumer-rules.pro` discipline, common reflection-using library rules (Moshi, Room, Hilt, Retrofit, Glide), mapping-file workflow, debugging release-build crashes. Use when reading, writing, or reviewing ProGuard/R8 configuration files. - [Swift Testing Pro](https://agentstack.voostack.com/l/skill-kelvinkosbab-appbootstrapai-swift-testing-pro) — Skill · Free · security-reviewed — `agentstack add skill-kelvinkosbab-appbootstrapai-swift-testing-pro` Writes, reviews, and improves Swift Testing code using modern APIs and best practices. Use when reading, writing, or reviewing projects that use Swift Testing. - [Swift Package Pro](https://agentstack.voostack.com/l/skill-kelvinkosbab-appbootstrapai-swift-package-pro) — Skill · Free · security-reviewed — `agentstack add skill-kelvinkosbab-appbootstrapai-swift-package-pro` Reviews Swift Package Manager libraries for public API design, module organization, dependency hygiene, and modern SPM features. Use when reading, writing, or reviewing Swift packages. --- Seller on AgentStack — the marketplace for AI agent skills and MCP servers. Every listing is security-reviewed. Install any with `agentstack add `.