Expert knowledge of Apache Kafka architecture, cluster design, capacity planning, partitioning strategies, replication, and high availability. Auto-activates on keywords kafka architecture, cluster sizing, partition strategy, replication factor, kafka ha, kafka scalability, broker count, topic design, kafka performance, kafka capacity planning.
Comprehensive ML model evaluation with multiple metrics, cross-validation, and statistical testing. Activates for "evaluate model", "model metrics", "model performance", "compare models", "validation metrics", "test accuracy", "precision recall", "ROC AUC". Generates detailed evaluation reports with visualizations and statistical significance tests, integrated with SpecWeave increment documentation.
System Architect and technical design expert. Creates system architecture, technical specifications, Architecture Decision Records (ADRs), component designs, API contracts, data models, and deployment architectures. Handles design patterns, scalability planning, technology stack decisions, microservices architecture, event-driven systems, CQRS, domain-driven design. Activates for architect, architecture, system design, technical design, api, backend, frontend, fullstack, ADR, architecture decision record, design patterns, microservices, API design, data model, database schema, scalability, performance architecture, technology stack, tech stack selection, distributed systems, event-driven, CQRS, DDD, domain model, component architecture, integration patterns, CAP theorem, consistency, availability, partition tolerance, how should I design, how to architect, what architecture, best architecture for, system architecture for, design the system, plan the architecture, architecture review, architecture decision, wh
This skill should be used whenever domain modeling is taking place. It provides specialized guidance for type-driven and data-driven design based on Rich Hickey and Scott Wlaschin's principles. The skill helps contextualize current modeling within the existing domain model, identifies inconsistencies, builds ubiquitous language, and creates visualizations (Mermaid, Graphviz/DOT, ASCII diagrams) to communicate domain concepts clearly. Use this skill when designing types, modeling business domains, refactoring domain logic, or ensuring domain consistency across a codebase.
Handle production incidents with SRE best practices including detection, investigation, mitigation, recovery, and postmortems. Use when dealing with production outages, SEV1/SEV2 incidents, creating postmortems, or updating runbooks.
Choose deployment strategy and infrastructure. Use when deciding where to deploy applications, setting up CI/CD, or configuring production environments. Covers Vercel, Railway, AWS, Cloudflare Workers, and Docker.
Node.js/TypeScript backend developer. Builds Express.js, Fastify, NestJS APIs with Prisma ORM, TypeORM, Mongoose. Implements REST APIs, GraphQL, authentication (JWT, session, OAuth), authorization, database operations, background jobs, WebSockets, real-time features, API validation, error handling, middleware. Activates for: backend, back-end, api, server, Node.js, NodeJS, Express, Fastify, NestJS, TypeScript backend, TypeScript, API, REST API, GraphQL, Prisma, TypeORM, Mongoose, MongoDB, PostgreSQL with Node, PostgreSQL, MySQL with Node, MySQL, authentication backend, JWT, passport.js, bcrypt, async/await, promises, middleware, error handling, validation, Zod, class-validator, background jobs, Bull, BullMQ, Redis, WebSocket, Socket.io, real-time, web app backend, calculator backend, build api, create api.
Build reliable third-party API integrations including OAuth, webhooks, rate limiting, error handling, and data sync. Use when integrating with external services (Slack, Stripe, Gmail, etc.), building API connections, handling webhooks, or implementing OAuth flows.
Smart deployment platform router for Vercel vs Cloudflare vs GitHub Pages. Analyzes project structure, framework, SEO needs, runtime requirements, AND repository visibility (private/public). Routes to Cloudflare for private repos (GitHub Pages requires paid plan), Vercel for dynamic SEO, GitHub Pages only for public repos. Activates for deploy, vercel vs cloudflare, where to deploy, cloudflare workers, cloudflare pages, vercel deployment, edge deployment, SSR deployment, static site deployment, which hosting, deployment recommendation, github pages, private repo deployment.
Validates SpecWeave plugin installation when EXPLICITLY requested by user. Ensures marketplace registered, core plugin installed, and context-specific plugins available. ONLY activates for explicit validation requests - does NOT auto-activate for workflow commands to avoid false positives. Activates ONLY for plugin validation, environment setup, validate plugins, check plugins, specweave init, fresh setup, marketplace registration.
Comprehensive progress synchronization expert. Explains when and how to use /sw:sync-progress for multi-system sync (tasks → docs → external tools). AUTO-CREATES missing external issues. Activates for sync progress, update progress, sync everything, sync all systems, sync to GitHub, sync to JIRA, how to sync, progress synchronization, multi-system sync, create github issue, no github issue linked.
Guide for managing the 5 design documents in .gaia/designs/. Use when creating, updating, or validating design documentation.
ACTIVE router that detects development tasks and spawns specialized agents. Activates for: React, Vue, Next.js, frontend, dashboard, component, UI, UX, GitHub, API, backend, database, SQL, PostgreSQL, MongoDB, Redis, Kubernetes, K8s, Docker, Terraform, AWS, Azure, GCP, infrastructure, ML, machine learning, model, training, AI, data science, testing, TDD, test-driven, Vitest, Jest, Playwright, E2E, mobile, React Native, iOS, Android, Expo, Kafka, streaming, event-driven, messaging, payments, Stripe, checkout, billing, subscriptions, release, deploy, CI/CD, pipeline, version, diagram, architecture, C4, Mermaid, flowchart, increment, specweave, /sw:, spec.md, tasks.md, living docs.
Expert on multicultural heritage traditions, holidays, and celebrations. Use for maintaining holiday theme features, adding new cultural events, ensuring cultural sensitivity, and managing the data-driven holiday configuration system
Documentation view expert for Docusaurus integration. Launches interactive server for SpecWeave living documentation with hot reload, auto-generated sidebar, and Mermaid diagrams. Works in ANY SpecWeave project with auto-setup. Supports both internal (port 3015) and public (port 3016) docs. Activates for preview docs, view documentation, Docusaurus server, docs UI, documentation website, local docs server, hot reload docs, static site build.
Multi-framework UI testing expert - Cypress, Testing Library, component tests. Use for framework comparison, Cypress-specific testing, or React Testing Library. For DEEP Playwright expertise, use e2e-playwright skill instead. Activates for Cypress, Testing Library, component tests, React testing, Vue testing, framework comparison, which testing tool, Cypress vs Playwright, render component, fireEvent, userEvent, screen queries, getByRole, getByText, getByTestId, waitFor, findBy, queryBy, test component, mount component, shallow render, integration test UI, DOM testing, accessibility testing, aria queries, form testing, user interaction testing, click test, input test.
Expert frontend developer for React, Vue, Angular, and modern web development. Covers components, hooks, state management, routing, forms, TypeScript, performance optimization, and best practices. Activates for frontend, front-end, React, Vue, Angular, JavaScript, TypeScript, hooks, components, state management, frontend development, page design, UI styling, CSS, Tailwind, make pretty, beautiful, beautiful app, beautiful ui, beautiful website, sleek, modern ui, UI/UX, web page, landing page, form design, button styling, responsive design, mobile-first, flexbox, grid layout, animations, transitions, hover effects, dark mode, light mode, color scheme, typography, spacing, shadows, borders, rounded corners, gradient, glassmorphism, neumorphism, web app, calculator, dashboard, admin panel.
.NET/C# backend developer for ASP.NET Core APIs with Entity Framework Core. Builds REST APIs, minimal APIs, gRPC services, authentication with Identity/JWT, authorization, database operations, background services, SignalR real-time features. Activates for: .NET, C#, ASP.NET Core, Entity Framework Core, EF Core, .NET Core, minimal API, Web API, gRPC, authentication .NET, Identity, JWT .NET, authorization, LINQ, async/await C#, background service, IHostedService, SignalR, SQL Server, PostgreSQL .NET, dependency injection, middleware .NET.
This skill should be used when working on Godot Engine projects. It provides specialized knowledge of Godot's file formats (.gd, .tscn, .tres), architecture patterns (component-based, signal-driven, resource-based), common pitfalls, validation tools, code templates, and CLI workflows. The `godot` command is available for running the game, validating scripts, importing resources, and exporting builds. Use this skill for tasks involving Godot game development, debugging scene/resource files, implementing game systems, or creating new Godot components.
Expert in Expo SDK 54+ development workflows, EAS Build, EAS Update, native tabs, Expo Router v6, expo-video, expo-audio, dev clients, expo-cli commands, app configuration, and deployment strategies. Activates for expo, expo go, eas build, eas update, expo config, app.json, eas.json, expo dev client, expo prebuild, expo eject, over-the-air updates, expo doctor, expo install, managed workflow, bare workflow, expo router, native tabs, liquid glass.
