> browse/registry

> konva

Build interactive 2D canvas applications with Konva. Use when a user asks to create drawing tools, image editors, interactive graphics, drag-and-drop interfaces, or canvas-based UIs using Konva or react-konva.

> formik

Build forms in React with Formik. Use when creating complex forms with validation, multi-step forms, dynamic form fields, or handling form submission with error states.

> convex-sdk

You are an expert in Convex, the reactive backend platform for TypeScript. You help developers build real-time applications with a built-in database, serverless functions, file storage, authentication, scheduled jobs, and automatic real-time sync to React/Next.js clients — replacing REST APIs, WebSocket servers, and database management with a single reactive backend that pushes updates to clients automatically.

> convex

Assists with building real-time reactive backends using Convex. Use when creating databases with automatic client sync, reactive queries, file storage, scheduled functions, or full-text and vector search. Trigger words: convex, reactive backend, real-time database, useQuery, useMutation, convex functions, convex schema.

> mantine

Build React applications with the Mantine UI component library. Use when a user asks to use Mantine components, configure themes, implement forms with validation, add notifications, or build responsive layouts with Mantine hooks.

> remotion-video-toolkit

Programmatic video creation with React using Remotion. Use when a user asks to create videos with code, generate personalized videos, build animated data visualizations, add TikTok-style captions, render video programmatically, or automate video production. Supports CLI rendering, AWS Lambda, and Google Cloud Run deployment.

> uploadthing

Handle file uploads in TypeScript apps with UploadThing. Use when a user asks to implement file uploads, handle image uploads in Next.js, add drag and drop file upload, or integrate S3-backed file storage without managing infrastructure.

> detox

When the user wants to write end-to-end tests for React Native apps using Detox's gray-box testing approach. Also use when the user mentions "detox," "React Native testing," "React Native E2E," "gray-box testing," or "Wix Detox." For general mobile testing, see appium. For simpler mobile UI flows, see maestro.

> lovable

You are an expert in Lovable (formerly GPT Engineer), the AI app builder that generates production-ready full-stack applications from natural language descriptions. You help developers and non-technical founders create React + Supabase applications with authentication, database, file storage, and deployment — going from idea to production URL in under an hour.

> iron-session

Manage encrypted sessions in Next.js with iron-session. Use for session auth, encrypted cookies, or stateless sessions without a database.

> ssr-migration

Migrate client-side rendered (CSR) React/Vue applications to server-side rendering (SSR) or static site generation (SSG) using Next.js, Nuxt, or Astro. Use when you need to improve SEO, reduce time-to-first-byte, fix blank page issues for crawlers, or improve Core Web Vitals. Covers incremental adoption, data fetching patterns, hydration debugging, and deployment configuration. Trigger words: SSR, SSG, server-side rendering, static generation, Next.js migration, SEO, hydration, TTFB, Core Web Vi

> expo-router

Build native mobile apps with file-based routing using Expo Router — React Native navigation that works like Next.js. Use when someone asks to "add navigation to React Native", "Expo Router", "file-based routing for mobile", "deep linking in React Native", "mobile app navigation", or "React Native routing like Next.js". Covers file-based routes, layouts, deep linking, tabs, stacks, and universal links.

> liveblocks

Expert guidance for Liveblocks, the platform for adding real-time collaboration features to web applications. Helps developers implement live cursors, presence indicators, collaborative editing, comments, and notifications using Liveblocks' React hooks and APIs.

> wxt

Build cross-browser extensions with WXT — the modern framework for Chrome, Firefox, Safari, and Edge extensions. Use when someone asks to "build a browser extension", "Chrome extension with React", "WXT framework", "cross- browser extension", "manifest v3 extension", "build Firefox extension", or "browser extension with TypeScript". Covers content scripts, background workers, popup/options pages, storage, messaging, and publishing.

> react-aria

Build accessible UI components with React Aria. Use when creating accessible form controls, implementing ARIA patterns, building design systems, or fixing accessibility issues.

> marko

You are an expert in Marko, the HTML-first UI framework by eBay that powers ebay.com. You help developers build high-performance web applications with streaming server rendering, automatic partial hydration, a concise tag-based syntax, and reactive state — optimized for fast first-paint and minimal client-side JavaScript through fine-grained reactivity and compiler optimizations.

> 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.

> appium

When the user wants to automate mobile app testing on iOS and Android using Appium. Also use when the user mentions "appium," "mobile automation," "iOS testing," "Android testing," "mobile WebDriver," "XCUITest," or "UiAutomator." For React Native-specific testing, see detox.

> arcjet

Expert guidance for Arcjet, the developer-first security platform that provides rate limiting, bot protection, email validation, and attack detection as a code-first SDK. Helps developers add security layers to Next.js, Node.js, and other JavaScript/TypeScript applications without managing infrastructure.

> authjs

You are an expert in Auth.js (formerly NextAuth.js), the authentication library for web frameworks. You help developers add sign-in with 80+ OAuth providers (Google, GitHub, Apple, Discord), email/password, magic links, and WebAuthn to Next.js, SvelteKit, Express, and other frameworks — with session management, JWT/database sessions, role-based access, and middleware protection.