Develop native Android apps with Kotlin. Covers MVVM with Jetpack, Compose for modern UI, Retrofit for API calls, Room for local storage, and navigation architecture.
Writing Playwright E2E tests for tldraw. Use when creating browser tests, testing UI interactions, or adding E2E coverage in apps/examples/e2e or apps/dotcom/client/e2e.
Async operations and background tasks in GPUI. Use when working with async, spawn, background tasks, or concurrent operations. Essential for handling async I/O, long-running computations, and...
Set up shadcn/ui component library with Tailwind CSS v4 configuration. Handles installation, initialization, theme configuration, and common component setup. Use when starting a new Next.js/React...
Technical references, manifest rules, file formats, and UX guidelines for Obsidian. Load when checking API details, manifest requirements, or UI/UX standards.
Apply preferred toolchain and technology stack defaults: pnpm, Next.js, TypeScript, Convex, Vercel, Tailwind, shadcn/ui, Zustand, TanStack, Vitest. Use when setting up new projects, choosing...
Standard software engineering workflow for requirement analysis, technical design, and task planning. Use this skill when developing new features, complex architecture designs, multi-module...
Comprehensive iOS development guidance including Swift best practices, SwiftUI patterns, UI/UX review against HIG, and app planning. Use for iOS code review, best practices, accessibility audits,...
Review UI code for Web Interface Guidelines compliance. Use when auditing UX, checking accessibility, or reviewing designs for web best practices.
Build, integrate, and troubleshoot SharePlay GroupActivities features, including GroupActivity definitions, activation flows, GroupSession lifecycle, messaging and journals, ShareLink and...
Build modern React/Next.js frontends. Use when creating web applications, choosing frontend stack, structuring components, or implementing UI/UX designs. Covers React, Next.js, Tailwind CSS, and...
Expert UI/UX design guidance for unique, accessible interfaces. Use for visual decisions, colors, typography, layouts. Always ask before making design decisions. Use this skill when the user asks...
Generate a project-specific DESIGN_SYSTEM.md that enforces consistent UI/UX across SPAs, traditional server-rendered sites, and hybrid systems. Includes tokens, component rules, accessibility...
Query layer patterns for consuming services with TanStack Query, error transformation, and runtime dependency injection. Use when implementing queries/mutations, transforming service errors for...
Apple Human Interface Guidelines for Apple Vision Pro. Use when building spatial computing apps, implementing eye/hand input, or designing immersive experiences. Triggers on tasks involving...
Develop MCP Apps hosts (AppBridge) and access comprehensive MCP Apps reference documentation. Covers host embedding, multi-server routing, sandbox security, and full API reference. Use when...
Manage Shadcn UI components: Add, Update, and Create custom components following best practices.
Integrate Duit framework into Flutter applications including setup, driver configuration, HTTP/WebSocket transports, custom widgets, and themes. Use when integrating backend-driven UI, configuring...
Assistant for creating, editing, and debugging reactive Python notebooks with marimo. Use when you need to build marimo notebooks, debug reactive execution, add interactive UI elements, or convert...
Stand up a Design Engineering practice (hybrid design+engineering) by producing a Design Engineering Execution Pack: charter, prototype→production workflow, design-to-code contract, component...