Skill UI

This comprehensive guide covers best practices for building robust database systems. It teaches crucial concepts like schema normalization, effective indexing strategies, selecting the right database (e.g., SQLite vs PostgreSQL) and ORM, and optimizing queries to prevent common performance issues like N+1 problems. It emphasizes making context-aware architectural decisions.

This skill guides the definition of relationships and integration contracts between distinct bounded contexts within a complex system using Domain-Driven Design (DDD) patterns. It is crucial for preventing domain leakage, planning anti-corruption layers (ACLs), and clarifying ownership boundaries when multiple services interact, ensuring a robust and scalable system architecture.

This comprehensive workflow bundle guides the entire documentation lifecycle for software projects. It covers planning, API specification (OpenAPI), architectural design (C4 model), code commenting (JSDoc/TSDoc), generating READMEs, and maintaining structured knowledge bases (Wikis, Changelogs). Use this system when documenting a new product, maintaining an evolving codebase, or creating comprehensive technical guides.

A comprehensive skill for systematically building, refining, and documenting a project's domain model. It helps define core terminology, establish a ubiquitous language, and record critical architectural decisions (ADRs). Use this when you need to challenge ambiguous language, invent edge-case scenarios, or maintain architectural consistency throughout the development lifecycle.

Build email infrastructure that reaches inboxes: transactional email, marketing automation that converts, deliverability best practices, and scaling decisions. Use when designing or fixing startup email systems.

This skill specializes in debugging distributed systems and analyzing production incidents. It helps identify root causes of errors using observability tools, structured logging, and distributed tracing. You will implement fixes, establish preventive measures, and improve system reliability. Suitable for investigating recurring errors and designing error handling improvements.

Expert in event sourcing, CQRS, and event-driven architecture. Masters event store design, projection building, saga orchestration, and eventual consistency. Ideal for systems requiring audit trails, complex workflows, temporal queries, and event-driven microservices.

This skill guides you in designing and implementing event stores for event-sourced systems. It covers architecture patterns, technology selection (like PostgreSQL, Kafka, EventStoreDB), and implementation best practices. Use it when building event sourcing infrastructure, optimizing storage retrieval, or setting up schemas. Includes templates for SQL and Python implementations to ensure append-only, ordered, and versioned event persistence.

This skill orchestrates full-stack feature development across backend, frontend, and infrastructure layers using an API-first approach. It guides users through architecture design, parallel implementation, and integration testing phases, coordinating specialized agents to deliver cohesive, production-ready systems with proper separation of concerns and comprehensive testing.

This skill covers core principles for game audio implementation, including sound design, music integration, and adaptive audio systems. It details audio categorization, layering techniques, 3D spatialization, platform-specific formats, and mix hierarchy to create immersive experiences.

A comprehensive guide to game design covering core loop design, game design documents, player psychology, difficulty balancing, progression systems, and common anti-patterns. Ideal for game developers and designers seeking to create engaging player experiences.

This guide provides practical implementation steps for ensuring GDPR compliance in data processing, consent management, and privacy controls. Use this skill when developing systems that handle EU personal data, managing Data Subject Requests (DSRs), or designing privacy-first architectures to meet strict international data regulations.