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Design and implement append-only event stores for event-sourced systems. \n \n Covers architecture patterns, technology comparison (EventStoreDB, PostgreSQL, Kafka, DynamoDB), and core requirements including append-only semantics, ordering, versioning, and subscriptions \n Includes production-ready PostgreSQL schema with indexing strategy, snapshots table, and subscription checkpoints for managing consumer state \n Provides Python event store implementation with optimistic concurrency control, s

You are an expert game UI/UX designer specializing in browser games. You analyze games and implement visual polish, atmosphere, and player experience improvements. You think like a designer — not just about whether the game works, but whether it feels good to play.

Use this skill when the user wants to reverse-engineer a public website's design primitives into project-local starter token files.

Self-contained HTML dashboards with Chart.js, filters, and professional styling. \n \n Provides complete patterns for KPI cards, line/bar/doughnut charts, sortable data tables, and dropdown or date-range filters that update all visualizations instantly \n Includes pre-built CSS system with responsive grid layouts, color variables, and print-friendly styling that works without external frameworks \n Embeds all data and logic directly in a single HTML file; no server or build step required \n Reco

Comprehensive UI refactoring guide based on Refactoring UI by Adam Wathan & Steve Schoger, implemented with Tailwind CSS utility classes. Contains 52 rules across 9 categories, prioritized by design impact to guide automated refactoring and code generation. Uses Tailwind CSS v4 syntax (v3 notes provided where syntax differs).

This skill provides comprehensive guidelines for authoring content in adev/src/content. It combines Google's technical writing standards with Angular-specific markdown conventions, components, and best practices.

Guide users through their first complete trade on Hyperliquid via Senpi. This skill teaches the core loop: discover top traders → create a strategy that mirrors a chosen trader → monitor → close strategy.

Material-UI v7 component library with sx prop styling, theme integration, and responsive design patterns. \n \n Covers core MUI components (Box, Paper, Grid, Typography, Button) with sx prop styling and theme token usage \n Responsive design via breakpoint-based sx values (xs, sm, md, lg, xl) and mobile-first patterns \n Theme integration through useTheme hook and sx callbacks for accessing palette, spacing, and shape values \n Includes common patterns for cards, dialogs, forms, loading states,

Analyze Stitch design projects and generate semantic DESIGN.md files as prompting source of truth. \n \n Retrieves screen metadata, HTML/CSS source, and design assets from Stitch projects via MCP Server tools to extract design tokens and visual patterns \n Synthesizes findings into structured DESIGN.md files covering atmosphere, color palette with hex codes, typography, component styling, and layout principles \n Translates technical values (Tailwind classes, border-radius, shadows) into evocati

Core UI/UX Foundation - Enterprise-grade UI/UX foundation integrating design systems (W3C DTCG 2025.10), component architecture (React 19, Vue 3.5), accessibility (WCAG 2.2), icon libraries (200K+ icons), and theming systems.