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.
Use when you have to refine subtasks into actionable plans ensuring that all corner cases are handled and we understand all the requirements.
Automated data visualization for EDA, model performance, and business reporting. Activates for "visualize data", "create plots", "EDA", "exploratory analysis", "confusion matrix", "ROC curve", "feature distribution", "correlation heatmap", "plot results", "dashboard". Generates publication-quality visualizations integrated with SpecWeave increments.
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.
Centralized model versioning, staging, and lifecycle management. Activates for "model registry", "model versioning", "model staging", "deploy to production", "rollback model", "model metadata", "model lineage", "promote model", "model catalog". Manages ML model lifecycle from development through production with SpecWeave increment integration.
Automated machine learning with hyperparameter optimization using Optuna, Hyperopt, or AutoML libraries. Activates for "automl", "hyperparameter tuning", "optimize hyperparameters", "auto tune model", "neural architecture search", "automated ml". Systematically explores model and hyperparameter spaces, tracks all experiments, and finds optimal configurations with minimal manual intervention.
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.
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.
Use when creating custom Bknd plugins, extending functionality with hooks and events, or building reusable modules that add entities, endpoints, or middleware. Covers plugin architecture, lifecycle hooks, event system integration, and schema extension.
Use btca (Better Context App) to efficiently query and learn from the bknd backend framework. Use when working with bknd for (1) Understanding data module and schema definitions, (2) Implementing authentication and authorization, (3) Setting up media file handling, (4) Configuring adapters (Node, Cloudflare, etc.), (5) Learning from bknd source code and examples, (6) Debugging bknd-specific issues
Guide for managing the 5 design documents in .gaia/designs/. Use when creating, updating, or validating design documentation.
Use when configuring media file handling, setting up storage adapters, defining entity-media relationships (one-to-one, one-to-many), uploading files, and working with polymorphic media relations. Covers media module configuration, storage backends, and the Media API.
This skill should be used when working with Shadertoy shaders, GLSL fragment shaders, or creating procedural graphics for the web. Use when writing .glsl files, implementing visual effects, creating generative art, or working with WebGL shader code. This skill provides GLSL ES syntax reference, common shader patterns, and Shadertoy-specific conventions.
Design React/Vue components following atomic design and composition patterns. Use when creating UI components.
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.
Use when choosing a Bknd configuration mode (UI-only, Code-only, Hybrid), setting up mode switching between development and production, running Bknd CLI commands with TypeScript config files, or using mode helpers for automated syncing. Covers when to use each mode, setup patterns, CLI execution (bknd run, bknd sync), and v0.20.0 improvements.
.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.
Use when setting up a new Bknd project, configuring the initial schema, starting the development server, and understanding the core concepts. Covers project initialization, configuration modes, and the basic architecture.
This skill should be used when working with Strudel.cc, a live-coding music environment. Use when creating musical patterns, drum sequences, melodies, basslines, or generative compositions. The user will always want to run Strudel code in the browser, either by copy-pasting or by providing a clickable URL with the code encoded in base64.
