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

wp-phpstan WordPress skill Sets up PHPStan static analysis in WordPress plugins and themes, while managing baselines and WordPress-specific PHPDoc types. Claude Code CX Codex Cursor +1 4,600installs develop jsmastery-pro skill Turns approved specs and AGENTS.md rules into working UI and backend code. Helpful when architectural choices are settled and code generation needs strict guardrails. Claude Code CX Codex Cursor +1 4,400installs api-gateway-mcp-server official google skill Configures Google Cloud API Gateway as a remote MCP server over HTTP. It exposes REST APIs as tools for AI agents using annotated OpenAPI 3.x specs. Claude Code Gemini CLI CX Codex 499installs dotnet-webapi dotnet skill A coding-agent skill for ASP.NET Core Web API work: it keeps new endpoints in the style the project already uses, adds OpenAPI metadata and central error handling. Claude Code CX Codex Cursor +1 4,200installs engineering-advanced-skills Alireza Rezvani skill An index of 37 engineering skills for architecture, automation, reliability, and platform work. Use it when a project needs task-specific engineering workflows. Claude Code 2,019installs agents elevenlabs skill The skill builds voice AI agents on ElevenLabs: sets first_message, prompt, LLM and voice through CLI or SDK. Useful for voice assistants and support bots. Claude Code CX Codex Cursor +1 11,000installs software-design-philosophy wondelai skill A design-review skill that rates module depth, information leakage and comment quality, then names the fix for each failed check. Claude Code CX Codex Cursor +1 6,100installs insforge-integrations InsForge skill A skill that walks your agent through hooking a third-party auth provider into InsForge and through taking x402 payments on an HTTP endpoint. Claude Code CX Codex Cursor +1 55,700installs minecraft-plugin-development official github skill Builds and debugs Minecraft server plugins for Paper, Spigot, and Bukkit. Handles commands, listeners, configs, and minigame states. GitHub Copilot 485installs senior-backend Alireza Rezvani skill Scaffolds backend APIs, detects database bottlenecks, and runs load tests. Useful when designing Express routes, optimizing PostgreSQL, or preparing for production. Claude Code 1,674installs aws-solution-architect Alireza Rezvani skill Designs AWS architectures, produces IaC templates, and reviews cloud costs. Use it for serverless builds, AWS migration work, or CI/CD planning. Claude Code 1,586installs rust-pro Seth Hobson subagent A Claude Code, Codex, and Cursor subagent for modern Rust 1.75+. It handles async Tokio services, complex lifetimes, lock-free concurrency, and systems programming. Claude Code CX Codex Cursor 1,148installs api-gateway-backend-security-and-rate-limiting official google skill Configure client authentication, backend access, and per-project quotas for Google Cloud API Gateway. Use it when securing Cloud Run services or investigating quota errors. Claude Code Gemini CLI CX Codex 360installs senior-architect Alireza Rezvani skill Analyzes project architecture, dependencies, and code structure. Use it for ADRs, database choices, and Mermaid, PlantUML, or ASCII diagrams. Claude Code 1,494installs graphql-architect VoltAgent Community subagent Designs GraphQL schemas for microservices, federation, and distributed graphs. Use it when an API needs structured evolution or query analysis. Claude Code 1,038installs senior-fullstack Alireza Rezvani skill Scaffolds Next.js, FastAPI, MERN or Django projects and scores your codebase for quality and security issues. Claude Code 1,390installs nextjs-developer VoltAgent Community subagent Subagent for building full-stack Next.js 14+ apps with App Router. It sets up Server Actions, tunes Core Web Vitals, and handles SEO metadata. Claude Code 898installs cpp-pro VoltAgent Community subagent A C++20/23 subagent focused on high-performance systems, template metaprogramming, zero-overhead abstractions, and sanitizer checks. Claude Code 781installs wordpress-master VoltAgent Community subagent Architect, optimize, and troubleshoot WordPress setups, from custom themes and plugins to WooCommerce and enterprise multisite networks. Claude Code 763installs api-designer VoltAgent Community subagent Designs REST and GraphQL API architectures, creates OpenAPI 3.1 specifications, and plans authentication. Useful when building new endpoints or refactoring old APIs. Claude Code 756installs architect-reviewer VoltAgent Community subagent Evaluates system design decisions, architecture patterns, and tech stack choices at a macro level. Useful before large-scale refactoring or when designing new service boundaries. Claude Code 743installs documentation-engineer VoltAgent Community subagent Generates and maintains developer documentation, API references, and architecture guides. Use it when project documentation falls behind your codebase. Claude Code 735installs connectivity-triage Seth Hobson skill Diagnoses active macOS network failures without modifying system settings. Helps isolate API timeouts, MCP disconnects, and DNS lookup issues. Claude Code CX Codex Cursor 743installs performance-engineer VoltAgent Community subagent A Claude Code subagent designed to identify performance bottlenecks across code, databases, and infrastructure under heavy load. Claude Code 671installs tech-stack-evaluator Alireza Rezvani skill Evaluates frameworks, libraries, and cloud providers with weighted scoring. Calculates five-year TCO and assesses migration risks before project kickoff. Claude Code 904installs java-architect VoltAgent Community subagent Designs enterprise Java 17+ architectures and configures Spring Boot 3.x microservices. Helps migrate services, isolate domain logic, and adopt reactive pipelines. Claude Code 558installs mongodb-performance-advisor official github subagent Analyzes MongoDB queries across your codebase and audits database performance using a readonly MCP server. Identifies slow operations and optimizes aggregation pipelines. GitHub Copilot 223installs apify-integration-expert official github subagent Integrates Apify Actors into JavaScript and Python codebases. Finds suitable Actors, drafts client code, and validates run outputs. GitHub Copilot 222installs api-design-reviewer Alireza Rezvani skill Audits REST API designs, spots breaking changes between spec versions, and calculates quality scorecards. Useful when reviewing PRs with endpoint changes or planning a v2 migration. Claude Code 768installs code-to-prd Alireza Rezvani skill This skill turns a codebase into a PRD covering pages, routes, APIs, and user actions. Use it when existing behavior needs product-readable documentation. Claude Code 763installs fintech-engineer VoltAgent Community subagent Designs payment systems, banking integrations, and compliance-focused financial services with strict transaction accuracy. Useful for payment gateways and KYC rules. Claude Code 518installs performance-profiler Alireza Rezvani skill This skill investigates CPU, memory, I/O, and database bottlenecks in Node.js, Python, and Go apps. Use it when tracking down a slow endpoint or rising memory use. Claude Code 720installs power-platform-architect official Tim Hanewich skill This skill turns business requirements, use cases, and meeting transcripts into a Power Platform solution architecture with component choices and Mermaid.js diagrams. GitHub Copilot 205installs kotlin-specialist VoltAgent Community subagent Subagent for Kotlin 1.9+ development across Android, Ktor, and multiplatform projects. It enforces coroutine patterns, clean functional code, and Detekt analysis. Claude Code 501installs database-schema-designer Alireza Rezvani skill This skill turns database requirements into relational schemas, ERDs, and migrations. Use it when planning tables for a feature or reviewing an existing design. Claude Code 692installs websocket-engineer VoltAgent Community subagent Designs and builds real-time communication systems using WebSockets or Socket.IO. Useful for presence tracking, rooms, and high-concurrency feeds. Claude Code 472installs observability-designer Alireza Rezvani skill Builds Grafana dashboard specs and cleans noisy alert configurations. It sets up baseline observability across metrics, logs, and traces before production traffic spikes. Claude Code 671installs payment-integration VoltAgent Community subagent A Claude Code subagent for integrating payment gateways, subscription lifecycles, and PCI DSS compliance into your codebase. Claude Code 463installs agent-workflow-designer Alireza Rezvani skill Designs multi-agent workflows with explicit handoff contracts and context controls. Useful when a single prompt fails to manage complex multi-step tasks. Claude Code 658installs mcp-server-builder Alireza Rezvani skill Generates production-ready MCP server scaffolding in Python or TypeScript directly from OpenAPI contracts. Ideal for exposing existing APIs to LLMs. Claude Code 644installs