Backend and APIs: skills, plugins, subagents, slash commands and mcp servers

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 Expert Nuxt Developer official github subagent Guides Nuxt 3 and Nitro development with TypeScript typing. Helps configure data fetching via useFetch, resolve hydration issues, and structure server routes. 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 Azure SaaS Architect mode instructions official github subagent Configures an AI assistant into an Azure SaaS architect for multitenant platforms. Focuses on tenant isolation, scale units, and Well-Architected SaaS patterns. GitHub Copilot ★ 40,369repo stars aws-serverless-architect official github subagent Guides AWS serverless architecture design using Lambda, API Gateway, and DynamoDB. Useful when you need ready IaC templates and event-driven patterns. GitHub Copilot ★ 40,369repo stars Senior Cloud Architect official github subagent Designs system architecture, details non-functional requirements, and renders Mermaid diagrams without writing code. 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 typespec-m365-copilot official Awesome Copilot Community plugin Scaffolds TypeSpec declarative agents and API plugins for Microsoft 365 Copilot extensibility. Useful when defining REST operations, auth, and Adaptive Cards. 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 python-mcp-development official Awesome Copilot Community plugin Scaffolds Python Model Context Protocol servers using the official MCP Python SDK v2. Useful when you need ready-to-use tools, tests, and client configs. GitHub Copilot ★ 40,369repo stars power-apps-code-apps official Awesome Copilot Community plugin Scaffolds Power Apps Code Apps projects and provides an agent for Power Platform and Dataverse guidance. 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 oracle-to-postgres-migration-expert official Awesome Copilot Community plugin Guides .NET solution migrations from Oracle to PostgreSQL. Helps rewrite data access code to Npgsql and translate PL/SQL procedures into PL/pgSQL. 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 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 java-modernization-studio official Ayan Gupta plugin Interactive canvas for GitHub Copilot that guides Java app modernization workflows. It inspects repositories, sets validation gates, and runs migration tasks from real artifacts. GitHub Copilot ★ 40,369repo stars foundry-hosted-agent-copilotkit official Sunil Sattiraju plugin Guides the setup of a CopilotKit React frontend connected to a Microsoft Foundry hosted agent over AG-UI. Use it to add human approvals or deploy with azd. GitHub Copilot ★ 40,369repo stars database-data-management official Awesome Copilot Community plugin Provides SQL query optimization, security code review, and database administration tools for PostgreSQL and SQL Server in GitHub Copilot. GitHub Copilot ★ 40,369repo stars context-matic official APIMatic plugin Connects verified API and SDK documentation to GitHub Copilot. It stops agents from hallucinating method signatures during payment and service integrations. GitHub Copilot ★ 40,369repo stars cms-development official Awesome Copilot Community plugin This plugin brings CMS-focused skills for themes, admin tools, Markdown rendering, and static exports. Use it when a project involves content workflows or publishing. GitHub Copilot ★ 40,369repo stars aws-cloud-development official Awesome Copilot Community plugin AWS cloud engineering tools and subagents for GitHub Copilot. It helps diagnose CloudWatch metrics, optimize cloud spend, and write Terraform IaC. GitHub Copilot ★ 40,369repo stars agent-framework-azure-ai-py Microsoft skill This skill helps build persistent Azure AI Foundry agents with the Python SDK. Use it for hosted tools, MCP servers, threads, and streaming. Claude Code GitHub Copilot 8installs