> browse/registry

> streamlit

Expert guidance for Streamlit, the Python framework for building interactive data applications and dashboards. Helps developers create web apps for data exploration, ML model demos, and internal tools using pure Python — no frontend skills required.

> winui-app

Bootstrap, develop, and design modern WinUI 3 desktop applications with C# and the Windows App SDK using official Microsoft guidance, WinUI Gallery patterns, Windows App SDK samples, and CommunityToolkit components. Use when creating a brand new app, preparing a machine for WinUI, reviewing, refactoring, planning, troubleshooting, environment-checking, or setting up WinUI 3 XAML, controls, navigation, windowing, theming, accessibility, responsiveness, performance, deployment, or related Windows

> ag-ui

You are an expert in AG-UI (Agent-User Interaction Protocol), the open standard by CopilotKit for connecting AI agents to frontend UIs. You help developers stream agent actions, tool calls, state updates, and text generation to React components in real-time — enabling rich agent UIs where users see what the agent is thinking, doing, and can intervene at any step.

> frontend-design-masterclass

Builds distinctive frontend UI with SvelteKit/Bun/Hono. Triggers on: web pages, dashboards, landing pages, apps, artifacts, styling, theming, fonts, animations, charts, dark/light modes.

> speech

Use when the user asks for text-to-speech narration or voiceover, accessibility reads, audio prompts, or batch speech generation via the OpenAI Audio API; run the bundled CLI (`scripts/text_to_speech.py`) with built-in voices and require `OPENAI_API_KEY` for live calls. Custom voice creation is out of scope.

> bolt

You are an expert in Bolt.new by StackBlitz, the AI-powered full-stack development environment that runs entirely in the browser. You help developers go from idea to deployed app in minutes using natural language prompts — Bolt generates complete applications with frontend, backend, database, and deployment, all running in a WebContainer without local setup.

> eslint

ESLint is the standard linting tool for JavaScript and TypeScript projects. It statically analyzes your code to find problems, enforce coding conventions, and catch bugs before they reach production. ESLint 9 introduced the flat config format, replacing the legacy `.eslintrc` system with a simpler, more composable `eslint.config.js` file. With a rich plugin ecosystem covering React, TypeScript, accessibility, and import ordering, ESLint is the backbone of code quality in modern web development.

> nativewind

Use Tailwind CSS in React Native with NativeWind — write className instead of StyleSheet. Use when someone asks to "use Tailwind in React Native", "NativeWind", "style React Native with Tailwind", "className in React Native", or "utility-first styling for mobile". Covers setup, responsive design, dark mode, animations, and platform-specific styles.

> figma-to-code

Convert Figma designs into production-ready frontend code. Use when someone shares a Figma URL, design screenshot, or exported design tokens and needs React/Vue/HTML components, responsive layouts, or design system code. Trigger words: Figma, design to code, mockup, wireframe, UI implementation, pixel perfect, design handoff, component from design.

> tauri

Assists with building lightweight cross-platform desktop (and mobile) applications using Tauri. Use when creating small, fast, secure apps with a web frontend and Rust backend that use the system webview instead of bundling Chromium. Trigger words: tauri, rust desktop, system webview, tauri commands, tauri plugins.

> pyside6-ui-engineer

Design, implement, refactor, and review PySide6 desktop applications with strong widget architecture, signal-slot design, state flow, and expert UI/UX logic. Use when building or fixing Qt for Python windows, dialogs, forms, navigation shells, model-view tables, theming, validation, accessibility, or interaction polish in Python GUI code.

> lighthouse-ci

Automate Lighthouse audits in CI with Lighthouse CI. Use when a user asks to track Core Web Vitals, prevent performance regressions, audit accessibility in CI, or set performance budgets for web apps.

> ghost

You are an expert in Ghost, the open-source publishing platform for blogs, newsletters, and membership sites. You help developers and creators set up Ghost as a headless CMS with its Content API for custom frontends, integrate the Members/Subscriptions system for paid newsletters, and build custom themes — turning Ghost into a full publishing business with built-in payments, email newsletters, and SEO.

> ethers-js

Interact with Ethereum and EVM blockchains using ethers.js. Use when a user asks to connect to Ethereum, read blockchain data, send transactions, interact with smart contracts, or build a dApp frontend.

> wails

Expert guidance for Wails, the Go framework for building desktop applications with web frontends. Helps developers build lightweight, fast desktop apps where the backend is Go and the frontend is any web framework (React, Vue, Svelte), communicating through auto-generated TypeScript bindings.

> chromajs

Manipulate colors with chroma.js — convert between color spaces (RGB, HSL, LAB, LCH), generate palettes and scales, mix and blend colors, check contrast ratios, and build accessible color systems. Use when tasks involve creating color palettes, theming, accessibility checks, or data visualization color scales.

> frontend-blueprint

AI frontend specialist and design consultant that guides users through a structured discovery process before generating any code. Collects visual references, design tokens, typography, icons, layout preferences, and brand guidelines to ensure the final output matches the user's vision with high fidelity. Use when the user asks to build, design, create, or improve any frontend interface — websites, landing pages, dashboards, components, apps, emails, forms, modals, or any UI element. Also trigger

> frontend-to-backend-requirements

Document frontend data needs for backend developers. Use when frontend needs to communicate API requirements to backend, or user says 'backend requirements', 'what data do I need', 'API requirements', or is describing data needs for a UI.

> axiom-xctest-automation

Use when writing, running, or debugging XCUITests. Covers element queries, waiting strategies, accessibility identifiers, test plans, and CI/CD test execution patterns.

> application-performance-performance-optimization

Optimize end-to-end application performance with profiling, observability, and backend/frontend tuning. Use when coordinating performance optimization across the stack.