Skill UI

This skill provides a comprehensive framework for designing or substantially improving high-conversion landing pages, marketing sites, and hero sections. It enforces rigorous design architecture, adhering strictly to established token foundations, type scales, and brand voice rules. The goal is to ensure that first-time visitors instantly grasp the product's value and desired action, optimizing the page for maximum conversion rate.

This expert skill advises critical infrastructure owners and operators (pipelines, railroads, public transit) on complying with complex TSA cybersecurity directives. It provides deep knowledge of CRMP, CIP, CAP, IT/OT segmentation, and incident reporting protocols. Use it for gap assessments, policy drafting, and security architecture reviews related to transportation critical systems.

Master the use of ScriptableObjects (SO) in Unity to architect robust, data-driven systems. Learn how to store shared configuration, manage runtime variables, and implement event channels—all as editable project assets. This guide helps you decouple systems, replacing hard-wired singletons and creating scalable game data structures for modern Unity development.

This abstraction provides a centralized mechanism for handling every incoming WebSocket message. Instead of directly subscribing to the service, handlers register themselves and are responsible for filtering the event payload based on a specific 'action'. This ensures components react only to the events they are interested in, promoting efficient and decoupled application architecture.

This skill guides the creation of technical documentation (such as RFCs, READMEs, PR descriptions, and architecture guides) that minimizes the mental effort required for the reader. It emphasizes structural patterns like 'Lead with the answer,' 'Chunking,' and 'Progressive disclosure' to ensure content is scannable, actionable, and easy to review, significantly reducing cognitive load for maintainers and contributors.

The sdd-apply agent is a specialized sub-agent responsible for the core implementation phase of Software Design Documents (SDD). It takes structured tasks, design specifications, and development contracts as input, writing and persisting actual code that strictly adheres to the defined specs and architecture. It manages state transitions and handles complex workload decisions, such as PR branching and risk assessment, ensuring the development workflow is followed precisely.

This specialized sub-agent is responsible for transforming high-level feature proposals and technical specifications into a formal, comprehensive 'design.md' document. It systematically captures all necessary technical details, including architectural decisions, data flow diagrams, detailed file changes, API contracts, and thorough testing strategies. Use this skill during the planning phase of any complex software change to ensure technical completeness and feasibility.

This agent is dedicated to systematically exploring technical ideas, such as new features, refactoring, or bug fixes, *before* committing to code changes. It investigates the existing codebase, analyzes current architecture, compares multiple potential approaches (including pros, cons, and effort), and generates a structured 'exploration' report with a clear recommendation and identified risks. It ensures thorough planning and risk mitigation during the design phase.

This sub-agent generates a comprehensive, structured change proposal (proposal.md) based on exploration analysis or direct user input. It enforces a standard architecture contract, detailing the intent, scope, technical approach, risks, and success criteria for new features or refactoring efforts. It is essential for initiating formal, documented development and architecture review cycles.

Apply Robert C. Martin-inspired rules to separate business policy from frameworks, databases, UI, and infrastructure. This skill helps define architectural boundaries, dependency direction, use cases, and interface adapters. Use it for software design decisions involving framework isolation or technology churn to ensure maintainability and clarity.

Apply Martin Kleppmann-inspired rules for designing reliable, scalable, and maintainable data systems. Covers consistency, replication, partitioning, transactions, streams, batch processing, and schema evolution. Use when making architecture decisions for data-intensive applications.

Apply lightweight Domain-Driven Design rules for bounded contexts, subdomains, and tactical modeling without unnecessary ceremony. Ideal for practical software architecture guidance and design decisions in complex systems.