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Development skills

Coding standards, frameworks, refactoring, and code review (18.2K skills)

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Use when you need to resolve an in-progress git merge/rebase conflict.

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moeru-ai/xsai664Updated Oct 26, 2026

Spawn Comment Sicko, fix accepted findings, and offer encodings for claimed constraints.

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moeru-ai/xsai664Updated Oct 26, 2026

kwaa's TypeScript best practices. Use when reading or editing .ts or .tsx files.

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moeru-ai/xsai664Updated Oct 26, 2026

Scan a codebase for deepening opportunities, present them as a visual HTML report, then grill through whichever one you pick.

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moeru-ai/xsai664Updated Oct 26, 2026

how

Free

Use for "how does X work", code walkthroughs before changing something, and placement / ownership / layering questions ("where should this live", "which package owns this", "is this the right layer"). Explains subsystem architecture, runtime flow, onboarding mental models. Use why for motivation.

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moeru-ai/xsai664Updated Oct 26, 2026

Build and sharpen a project's domain model. Use when discussing codebase terminology, writing or editing a CONTEXT.md, or recording or editing an ADR.

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moeru-ai/xsai664Updated Oct 26, 2026

Diagnosis loop for hard bugs and performance regressions. Use when the user says "diagnose"/"debug this", or reports something broken/throwing/failing/slow.

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moeru-ai/xsai664Updated Oct 26, 2026

Review the changes since a fixed point (commit, branch, tag, or merge-base) along two axes: Standards (does the code follow this repo's documented coding standards?) and Spec (does the code match what the originating issue/spec asked for?). Runs both reviews in parallel sub-agents and reports them side by side. Use when the user wants to review a branch, a PR, work-in-progress changes, or asks to "review since X".

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moeru-ai/xsai664Updated Oct 26, 2026

Find what a change could break somewhere else before it ships, beyond the diff, and prove the one fact it's safe because of by running real code instead of writing it up. Use for 'blast radius of X', 'what could this break', or reviewing a small diff you don't trust.

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moeru-ai/xsai664Updated Oct 26, 2026

Use when implementing app attestation, configuring App Check providers, setting up debug tokens, enabling backend enforcement, or managing token refresh.

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evanca/flutter-ai-rules662Updated Oct 10, 2026

Use when syncing real-time data, structuring JSON trees, reading/writing, creating listeners, enabling offline persistence, managing presence, sharding, or writing security rules.

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evanca/flutter-ai-rules662Updated Oct 10, 2026

Use when writing Dart code, reviewing for style, refactoring naming, adding doc comments, structuring imports, or enforcing type annotations.

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evanca/flutter-ai-rules662Updated Oct 10, 2026

Use when asked to review a PR, MR, branch, or diff, audit changed files, or check code quality.

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evanca/flutter-ai-rules662Updated Oct 10, 2026

Next.js 15 App Router patterns. Trigger: When working with Next.js - routing, Server Actions, data fetching.

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Gentleman-Programming/Gentleman-Skills660Updated Mar 28, 2026

Vercel AI SDK 5 patterns. Trigger: When building AI chat features - breaking changes from v4.

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Gentleman-Programming/Gentleman-Skills660Updated Mar 28, 2026

Angular forms: Signal Forms (experimental) and Reactive Forms. Trigger: When working with forms, validation, or form state in Angular.

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Gentleman-Programming/Gentleman-Skills660Updated Mar 28, 2026

Zustand 5 state management patterns. Trigger: When managing React state with Zustand.

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Gentleman-Programming/Gentleman-Skills660Updated Mar 28, 2026

Java 21 language and runtime patterns for modern, safe code. Trigger: When writing Java 21 code using records, sealed types, or virtual threads.

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Gentleman-Programming/Gentleman-Skills660Updated Mar 28, 2026

Hexagonal architecture layering for Java services with strict boundaries. Trigger: When structuring Java apps by Domain/Application/Infrastructure, or refactoring toward clean architecture.

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Gentleman-Programming/Gentleman-Skills660Updated Mar 28, 2026

React Native patterns for mobile app development with Expo and bare workflow. Trigger: When building mobile apps, working with React Native components, using Expo, React Navigation, or NativeWind.

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Gentleman-Programming/Gentleman-Skills660Updated Mar 28, 2026

Create high-quality Pull Requests with conventional commits and proper descriptions. Trigger: When creating PRs, writing PR descriptions, or using gh CLI for pull requests.

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Gentleman-Programming/Gentleman-Skills660Updated Mar 28, 2026

Spring Boot 3 patterns for configuration, DI, and web services. Trigger: When building or refactoring Spring Boot 3 applications.

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Gentleman-Programming/Gentleman-Skills660Updated Mar 28, 2026

React 19 patterns with React Compiler. Trigger: When writing React components - no useMemo/useCallback needed.

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Gentleman-Programming/Gentleman-Skills660Updated Mar 28, 2026

TypeScript strict patterns and best practices. Trigger: When writing TypeScript code - types, interfaces, generics.

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Gentleman-Programming/Gentleman-Skills660Updated Mar 28, 2026