Programming languages: skills, plugins, subagents, slash commands and mcp servers

swiftui-patterns official OpenAI skill Sets desktop-first macOS SwiftUI architecture, scene models, toolbars, split views, and clean multi-file project layouts. CX Codex GP ChatGPT 57installs view-refactor official OpenAI skill This skill restructures macOS SwiftUI views and scenes. Use it when a large view needs splitting or AppKit boundaries have grown too broad. CX Codex GP ChatGPT 52installs resx-source-generator-migration official github skill This skill moves a project from checked-in .Designer.cs files for .resx resources to a source generator. Use it when replacing the existing typed-resource generation setup. GitHub Copilot 10installs migrating-oracle-to-postgres-data-access-code official github skill Moves .NET/C# data-access code from Oracle to PostgreSQL with Npgsql. Use it while migrating an application's code layer alongside its database. GitHub Copilot 10installs canva-translate-design official Canva Pty Ltd. skill Translates every text element in a Canva design and creates a separate copy. Use it to localize layouts without editing each text box by hand. CX Codex GP ChatGPT 25installs java-upgrade official github skill Guides a Java project through a JDK upgrade and helps adopt newer language features. It covers 11 to 17, 17 to 21, and 21 to 25. GitHub Copilot 6installs java-development official github skill Guides plain Java development without frameworks, matching idioms to the target JDK release and running checks via Maven or Gradle. GitHub Copilot 3installs kql microsoft skill This skill helps agents write, debug, and review KQL queries. Use it for ADX, Log Analytics, Sentinel, and other Microsoft data services. Claude Code GitHub Copilot 58installs typescript-data-visualization-engineering official OpenAI skill Guides typed data visualization architecture in TypeScript, covering data contracts, state boundaries, and renderer selection from D3 to WebGL. CX Codex GP ChatGPT 9installs turborepo official Vercel Labs skill A skill that teaches Claude how Turborepo v2.8 works: task caching, remote cache, parallel runs and the --affected flag for CI. CX Codex GP ChatGPT 7installs applicationinsights-web-ts Microsoft skill Set up Application Insights telemetry for browser apps, including page views, requests, and exceptions. Use it for RUM or to connect browser-side GenAI agent traces with backend spans. Claude Code GitHub Copilot 38installs java-debugging official github skill A skill that walks the agent through finding a Java bug: reproduce, narrow down, test one hypothesis, attach a debugger. Useful once logs stop explaining anything. GitHub Copilot 1installs Expert Vue.js Frontend Engineer official github subagent GitHub Copilot subagent specialized in Vue 3, Composition API, TypeScript, and component architecture. Builds frontends, migrates from Vue 2, and optimizes rendering. GitHub Copilot ★ 40,369repo stars PHP MCP Expert official github subagent Assists in building Model Context Protocol servers in PHP 8.2+ using the official PHP SDK. Generates tools, resources, and prompts with PHP attributes. GitHub Copilot ★ 40,369repo stars Kotlin MCP Server Development Expert official github subagent Helps build Model Context Protocol servers in Kotlin using the official SDK, coroutines, and Ktor. Useful for wiring up tools, resources, and custom transports. GitHub Copilot ★ 40,369repo stars Java MCP Expert official github subagent Guides development of Model Context Protocol servers in Java using MCP Java SDK 2.x. Useful when configuring stdio transports, tool schemas, or Spring AI 2.0+ integrations. GitHub Copilot ★ 40,369repo stars Go MCP Server Development Expert official github subagent Builds Model Context Protocol servers in Go using the official Go SDK. Generates type-safe tools, resources, and transport configurations for Copilot. GitHub Copilot ★ 40,369repo stars C++ Expert official github subagent Provides guidance on modern C++ following ISO standards and C++ Core Guidelines. It helps write clean architecture, refactor legacy code, and set up testing. GitHub Copilot ★ 40,369repo stars Delphi Expert official github subagent Assists with Object Pascal development in Delphi projects. It covers VCL, FMX, FireDAC data access, memory safety, and unit registration in project files. GitHub Copilot ★ 40,369repo stars Context7-Expert official github subagent This subagent checks library documentation through Context7 and uses current syntax in its answers. Use it for framework and package questions. GitHub Copilot ★ 40,369repo stars Clojure Interactive Programming official github subagent Clojure pair-programming agent enforcing REPL-first workflows before saving files. It prevents silent fallbacks and protects pure functional architecture. GitHub Copilot ★ 40,369repo stars C# Expert official github subagent Guides the assistant through .NET and C# tasks. It enforces framework conventions, safe async/await patterns, and clean test structure. GitHub Copilot ★ 40,369repo stars swift-mcp-development official Awesome Copilot Community plugin This plugin helps build Model Context Protocol servers in Swift with the official MCP Swift SDK. Use it when you need a project generator and Swift concurrency guidance. GitHub Copilot ★ 40,369repo stars ruby-mcp-development official Awesome Copilot Community plugin Toolkit for building Model Context Protocol servers in Ruby using the official MCP Ruby SDK gem, with support for Rails integration. GitHub Copilot ★ 40,369repo stars php-mcp-development official Awesome Copilot Community plugin This plugin helps build MCP servers in PHP with the official SDK. Use it to generate a project with tools, resources, prompts, and tests. GitHub Copilot ★ 40,369repo stars openapi-to-application-go official Awesome Copilot Community plugin Generates Go REST API applications directly from OpenAPI specifications. Scaffolds handlers, middleware, and project structure inside GitHub Copilot. GitHub Copilot ★ 40,369repo stars openapi-to-application-csharp-dotnet official Awesome Copilot Community plugin Generate a .NET application from an OpenAPI specification, with ASP.NET Core scaffolding and controller generation. Use it to start an application from an API definition. GitHub Copilot ★ 40,369repo stars modernization-workflow official EMEA App GBB plugin Visualizes and guides the GitHub Copilot Modernize CLI workflow for .NET, Java, and C++ repositories across Assess, Plan, and Execute stages. GitHub Copilot ★ 40,369repo stars kotlin-mcp-development official Awesome Copilot Community plugin Generates and configures Kotlin MCP servers using the official SDK. Useful when building Model Context Protocol services on the JVM. GitHub Copilot ★ 40,369repo stars edit-tutorial official John Haugabook plugin edit-tutorial turns Copilot's session changes into a step-by-step lesson, then asks you to apply the same technique to a different code target. GitHub Copilot ★ 40,369repo stars clojure-interactive-programming official Awesome Copilot Community plugin Adds REPL-first Clojure development workflows to GitHub Copilot. It helps evaluate code incrementally in a live REPL before modifying files. GitHub Copilot ★ 40,369repo stars debugview microsoft skill A skill that drives the Sysinternals DebugView CLI, so your agent can capture Windows usermode and kernel debug output from the terminal. Claude Code GitHub Copilot 15installs