Claude Skills by luokai0

Translate and dub videos from one language to another, replacing the original audio with TTS while keeping the video intact.

Toolkit for interacting with and testing local web applications using Playwright. Supports verifying frontend functionality, debugging UI behavior, capturing browser screenshots, and viewing browser logs.

Use when you have a spec or requirements for a multi-step task, before touching code

Use when creating new skills, editing existing skills, or verifying skills work before deployment

Use this skill any time a spreadsheet file is the primary input or output. This means any task where the user wants to: open, read, edit, or fix an existing .xlsx, .xlsm, .csv, or .tsv file (e.g., adding columns, computing formulas, formatting, charting, cleaning messy data); create a new spreadsheet from scratch or from other data sources; or convert between tabular file formats. Trigger especially when the user references a spreadsheet file by name or path — even casually (like \"the xlsx i...

Setup TypeScript best practices and code style rules in CLAUDE.md

Expert-level Deno and Bun. Use when building with Deno 2, Bun native APIs, package managers, built-in test runners, or migrating from Node.js.

Expert-level JavaScript. Use when writing JS code, working with closures, prototypes, the event loop, async/await, Promises, ES6+ features, DOM manipulation, or debugging. Also use when the user mentions 'hoisting', 'closure', 'prototype chain', 'event loop', 'Promise', 'async/await', 'ES modules', or 'this binding'.

Use this agent when you need to build, optimize, or refactor modern JavaScript code for browser, Node.js, or full-stack applications requiring ES2023+ features, async patterns, or performance-criti...

Expert-level TypeScript. Use when working with TypeScript types, generics, conditional types, mapped types, tsconfig, strict mode, type narrowing, utility types, or migrating JS to TS. Also use when the user mentions 'type error', 'any type', 'generic', 'declaration file', 'tsconfig', 'strict mode', 'type narrowing', or 'utility types'.

Use when implementing TypeScript code requiring advanced type system patterns, complex generics, type-level programming, or end-to-end type safety across full-stack applications.

Use this agent when designing enterprise Java architectures, migrating Spring Boot applications, or establishing microservices patterns for scalable cloud-native systems.

Expert-level Java programming. Use when writing Java code, working with generics, streams, lambdas, concurrency, JVM tuning, Spring, Maven/Gradle, or Java 17+ features.

Expert-level Kotlin programming. Use when writing Kotlin code, working with coroutines, extension functions, data classes, sealed classes, Kotlin Flow, or building Android apps.

Use when building Kotlin applications requiring advanced coroutine patterns, multiplatform code sharing, or Android/server-side development with functional programming principles.

Expert-level Scala programming. Use when writing Scala code, working with case classes, pattern matching, Akka, Cats, ZIO, or functional programming patterns.

Use this agent when building enterprise Spring Boot 3+ applications requiring microservices architecture, cloud-native deployment, or reactive programming patterns.

Use this agent when building ASP.NET Core web APIs, cloud-native .NET solutions, or modern C# applications requiring async patterns, dependency injection, Entity Framework optimization, and clean a...

Expert-level C# and .NET programming. Use when writing C# code, working with LINQ, async/await, ASP.NET Core, Entity Framework, or building .NET applications.

Use when building .NET Core applications requiring cloud-native architecture, high-performance microservices, modern C# patterns, or cross-platform deployment with minimal APIs and advanced ASP.NET...

Use this agent when working on legacy .NET Framework 4.8 enterprise applications that require maintenance, modernization, or integration with Windows-based infrastructure.

Use when building or modernizing Rails applications requiring full-stack development, Hotwire reactivity, real-time features, or Rails-idiomatic patterns for maximum productivity.

Expert-level Ruby programming. Use when writing Ruby code, working with blocks/procs/lambdas, metaprogramming, Rails, RSpec, Bundler, or Ruby idioms.

Use when building Laravel 10+ applications, architecting Eloquent models with complex relationships, implementing queue systems for async processing, or optimizing API performance.

Expert-level PHP programming. Use when writing PHP code, working with Composer, Laravel, Symfony, PSR standards, or modern PHP 8+ features.

Use this agent when working with PHP 8.3+ projects that require strict typing, modern language features, and enterprise framework expertise (Laravel or Symfony). Use when building scalable applicat...

Expert-level Go programming. Use when writing Go code, working with goroutines, channels, interfaces, error handling patterns, Go modules, testing, benchmarking, or building Go services and CLIs. Also use when the user mentions 'goroutine', 'channel', 'defer', 'interface', 'go test', 'go mod', 'context', 'panic/recover', or 'Go compile error'.

Use when building Go applications requiring concurrent programming, high-performance systems, microservices, or cloud-native architectures where idiomatic patterns, error handling excellence, and e...

Expert-level Elixir programming. Use when writing Elixir code, working with OTP, GenServer, Phoenix, Ecto, or building fault-tolerant distributed systems.

Expert-level functional programming. Use when applying immutability, pure functions, currying, composition, monads, fp-ts, Ramda, or refactoring to FP style.

Expert-level Haskell programming. Use when writing Haskell code, working with monads, type classes, lazy evaluation, QuickCheck, or functional programming.

Use when architecting enterprise Angular 15+ applications with complex state management, optimizing RxJS patterns, designing micro-frontend systems, or solving performance and scalability challenge...

Use this agent when building production Next.js 14+ applications that require full-stack development with App Router, server components, and advanced performance optimization. Invoke when you need ...

Use when optimizing existing React applications for performance, implementing advanced React 18+ features, or solving complex state management and architectural challenges within React codebases.

Use this agent when you need to optimize complex SQL queries, design efficient database schemas, or solve performance issues across PostgreSQL, MySQL, SQL Server, and Oracle requiring advanced quer...

Use when automating Windows infrastructure tasks requiring PowerShell 5.1 scripts with RSAT modules for Active Directory, DNS, DHCP, GPO management, or when building safe, enterprise-grade automati...

Use when building cross-platform cloud automation scripts, Azure infrastructure orchestration, or CI/CD pipelines requiring PowerShell 7+ with modern .NET interop, idempotent operations, and enterp...

Build apps with the Claude API or Anthropic SDK. TRIGGER when: code imports `anthropic`/`@anthropic-ai/sdk`/`claude_agent_sdk`, or user asks to use Claude API, Anthropic SDKs, or Agent SDK. DO NOT TRIGGER when: code imports `openai`/other AI SDK, general programming, or ML/data-science tasks.

Analyze a repository to generate recommended Claude Code settings.json permissions. Use when setting up a new project, auditing existing settings, or determining which read-only bash commands to allow. Detects tech stack, build tools, and monorepo structure.

Create and setup git worktrees for parallel development with automatic dependency installation

Build, review, refactor, or architect ASP.NET Core web applications using current official guidance for .NET web development. Use when working on Blazor Web Apps, Razor Pages, MVC, Minimal APIs, controller-based Web APIs, SignalR, gRPC, middleware, dependency injection, configuration, authentication, authorization, testing, performance, deployment, or ASP.NET Core upgrades.

Use when the user asks to create, scaffold, or edit Jupyter notebooks (`.ipynb`) for experiments, explorations, or tutorials; prefer the bundled templates and run the helper script `new_notebook.py` to generate a clean starting notebook.

Guide for setup Codemap CLI for intelligent codebase visualization and navigation

Expert-level Swift programming. Use when writing Swift code, working with optionals, protocols, Swift concurrency, SwiftUI, Combine, or building Apple platform apps.

Composition patterns for building flexible, maintainable React components. Avoid boolean prop proliferation by using compound components, lifting state, and composing internals. These patterns make codebases easier for both humans and AI agents to work with as they scale.

Comprehensive guide for creating Claude Code agents with proper structure, triggering conditions, system prompts, and validation - combines official Anthropic best practices with proven patterns

Generate images and videos with Kling O3 — Kling's most powerful model family. Text-to-image, text-to-video, image-to-video, and video-to-video editing. Use when the user requests "Kling", "Kling O3", "Best quality video", "Kling image", "Kling video editing".

Create distinctive, production-grade frontend interfaces with high design quality. Use this skill when the user asks to build web components, pages, artifacts, posters, or applications (examples include websites, landing pages, dashboards, React components, HTML/CSS layouts, or when styling/beautifying any web UI). Generates creative, polished code and UI design that avoids generic AI aesthetics.

GitHub Actions workflow patterns for React Native iOS simulator and Android emulator cloud builds with downloadable artifacts. Use when setting up CI build pipelines or downloading GitHub Actions artifacts via gh CLI and GitHub API.

Expert-level Next.js development. Use when building Next.js apps, working with App Router, Server Components, Client Components, Server Actions, data fetching, middleware, ISR, SSG, SSR, or deploying Next.js. Also use when the user mentions 'App Router', 'Server Actions', 'getServerSideProps', 'middleware', 'ISR', 'use client', 'use server', 'layout.tsx', or 'page.tsx'.