mobile-development
Build modern mobile applications with React Native, Flutter, Swift/SwiftUI, and Kotlin/Jetpack Compose. Covers mobile-first design principles, performance optimization (battery, memory, network), offline-first architecture, platform-specific guidelines (iOS HIG, Material Design), testing strategies, security best practices, accessibility, app store deployment, and mobile development mindset. Use when building mobile apps, implementing mobile UX patterns, optimizing for mobile constraints, or making native vs cross-platform decisions.
shopify
Build Shopify applications, extensions, and themes using GraphQL/REST APIs, Shopify CLI, Polaris UI components, and Liquid templating. Capabilities include app development with OAuth authentication, checkout UI extensions for customizing checkout flow, admin UI extensions for dashboard integration, POS extensions for retail, theme development with Liquid, webhook management, billing API integration, product/order/customer management. Use when building Shopify apps, implementing checkout customizations, creating admin interfaces, developing themes, integrating payment processing, managing store data via APIs, or extending Shopify functionality.
repomix
Package entire code repositories into single AI-friendly files using Repomix. Capabilities include pack codebases with customizable include/exclude patterns, generate multiple output formats (XML, Markdown, plain text), preserve file structure and context, optimize for AI consumption with token counting, filter by file types and directories, add custom headers and summaries. Use when packaging codebases for AI analysis, creating repository snapshots for LLM context, analyzing third-party libraries, preparing for security audits, generating documentation context, or evaluating unfamiliar codebases.
web-frameworks
Build modern full-stack web applications with Next.js (App Router, Server Components, RSC, PPR, SSR, SSG, ISR), Turborepo (monorepo management, task pipelines, remote caching, parallel execution), and RemixIcon (3100+ SVG icons in outlined/filled styles). Use when creating React applications, implementing server-side rendering, setting up monorepos with multiple packages, optimizing build performance and caching strategies, adding icon libraries, managing shared dependencies, or working with TypeScript full-stack projects.
payment-integration
Implement payment integrations with SePay (Vietnamese payment gateway with VietQR, bank transfers, cards) and Polar (global SaaS monetization platform with subscriptions, usage-based billing, automated benefits). Use when integrating payment processing, implementing checkout flows, managing subscriptions, handling webhooks, processing bank transfers, generating QR codes, automating benefit delivery, or building billing systems. Supports authentication (API keys, OAuth2), product management, customer portals, tax compliance (Polar as MoR), and comprehensive SDK integrations (Node.js, PHP, Python, Go, Laravel, Next.js).
planning
Use when you need to plan technical solutions that are scalable, secure, and maintainable.
Problem-Solving Techniques
Apply systematic problem-solving techniques for complexity spirals (simplification cascades), innovation blocks (collision-zone thinking), recurring patterns (meta-pattern recognition), assumption constraints (inversion exercise), scale uncertainty (scale game), and dispatch when stuck. Techniques derived from Microsoft Amplifier project patterns adapted for immediate application.
pptx
Presentation creation, editing, and analysis. When Claude needs to work with presentations (.pptx files) for: (1) Creating new presentations, (2) Modifying or editing content, (3) Working with layouts, (4) Adding comments or speaker notes, or any other presentation tasks
xlsx
Comprehensive spreadsheet creation, editing, and analysis with support for formulas, formatting, data analysis, and visualization. When Claude needs to work with spreadsheets (.xlsx, .xlsm, .csv, .tsv, etc) for: (1) Creating new spreadsheets with formulas and formatting, (2) Reading or analyzing data, (3) Modify existing spreadsheets while preserving formulas, (4) Data analysis and visualization in spreadsheets, or (5) Recalculating formulas
frontend-design-pro
Creates jaw-dropping, production-ready frontend interfaces AND delivers perfectly matched real photos (Unsplash/Pexels direct links) OR flawless custom image-generation prompts for hero images, backgrounds, and illustrations. Zero AI slop, zero fake URLs.
frontend-design
Create distinctive, production-grade frontend interfaces with high design quality. Use this skill when the user asks to build web components, pages, or applications, OR when they provide screenshots/images/designs to replicate or draw inspiration from. For screenshot inputs, extracts design guidelines first using ai-multimodal analysis, then implements code following those guidelines. Generates creative, polished code that avoids generic AI aesthetics.
frontend-dev-guidelines
Frontend development guidelines for React/TypeScript applications. Modern patterns including Suspense, lazy loading, useSuspenseQuery, file organization with features directory, MUI v7 styling, TanStack Router, performance optimization, and TypeScript best practices. Use when creating components, pages, features, fetching data, styling, routing, or working with frontend code.
docx
Comprehensive document creation, editing, and analysis with support for tracked changes, comments, formatting preservation, and text extraction. When Claude needs to work with professional documents (.docx files) for: (1) Creating new documents, (2) Modifying or editing content, (3) Working with tracked changes, (4) Adding comments, or any other document tasks
github-pr-review
Comprehensive GitHub PR review with inline suggestions, approval/rejection criteria, and technology-agnostic checklists. Triggers when reviewing PRs, analyzing code changes, or when user requests PR review. ALWAYS approve or request changes after review.
Comprehensive PDF manipulation toolkit for extracting text and tables, creating new PDFs, merging/splitting documents, and handling forms. When Claude needs to fill in a PDF form or programmatically process, generate, or analyze PDF documents at scale.
mcp-builder
Guide for creating high-quality MCP (Model Context Protocol) servers that enable LLMs to interact with external services through well-designed tools. Use when building MCP servers to integrate external APIs or services, whether in Python (FastMCP) or Node/TypeScript (MCP SDK).
mcp-management
Manage Model Context Protocol (MCP) servers - discover, analyze, and execute tools/prompts/resources from configured MCP servers. Use when working with MCP integrations, need to discover available MCP capabilities, filter MCP tools for specific tasks, execute MCP tools programmatically, access MCP prompts/resources, or implement MCP client functionality. Supports intelligent tool selection, multi-server management, and context-efficient capability discovery.
docs-seeker
Search technical documentation using executable scripts to detect query type, fetch from llms.txt sources (context7.com), and analyze results. Use when user needs: (1) Topic-specific documentation (features/components/concepts), (2) Library/framework documentation, (3) GitHub repository analysis, (4) Documentation discovery with automated agent distribution strategy
aesthetic
Create aesthetically beautiful interfaces following proven design principles. Use when building UI/UX, analyzing designs from inspiration sites, generating design images with ai-multimodal, implementing visual hierarchy and color theory, adding micro-interactions, or creating design documentation. Includes workflows for capturing and analyzing inspiration screenshots with chrome-devtools and ai-multimodal, iterative design image generation until aesthetic standards are met, and comprehensive design system guidance covering BEAUTIFUL (aesthetic principles), RIGHT (functionality/accessibility), SATISFYING (micro-interactions), and PEAK (storytelling) stages. Integrates with chrome-devtools, ai-multimodal, media-processing, ui-styling, and web-frameworks skills.
ai-multimodal
Process and generate multimedia content using Google Gemini API for better vision capabilities. Capabilities include analyze audio files (transcription with timestamps, summarization, speech understanding, music/sound analysis up to 9.5 hours), understand images (better image analysis than Claude models, captioning, reasoning, object detection, design extraction, OCR, visual Q&A, segmentation, handle multiple images), process videos (scene detection, Q&A, temporal analysis, YouTube URLs, up to 6 hours), extract from documents (PDF tables, forms, charts, diagrams, multi-page), generate images (text-to-image with Imagen 4, editing, composition, refinement), generate videos (text-to-video with Veo 3, 8-second clips with native audio). Use when working with audio/video files, analyzing images or screenshots (instead of default vision capabilities of Claude, only fallback to Claude's vision capabilities if needed), processing PDF documents, extracting structured data from media, creating images/videos from text prompts, or implementing multimodal AI features. Supports Gemini 3/2.5, Imagen 4, and Veo 3 models with context windows up to 2M tokens.
backend-development
Build robust backend systems with modern technologies (Node.js, Python, Go, Rust), frameworks (NestJS, FastAPI, Django), databases (PostgreSQL, MongoDB, Redis), APIs (REST, GraphQL, gRPC), authentication (OAuth 2.1, JWT), testing strategies, security best practices (OWASP Top 10), performance optimization, scalability patterns (microservices, caching, sharding), DevOps practices (Docker, Kubernetes, CI/CD), and monitoring. Use when designing APIs, implementing authentication, optimizing database queries, setting up CI/CD pipelines, handling security vulnerabilities, building microservices, or developing production-ready backend systems.
better-auth
Implement authentication and authorization with Better Auth - a framework-agnostic TypeScript authentication framework. Features include email/password authentication with verification, OAuth providers (Google, GitHub, Discord, etc.), two-factor authentication (TOTP, SMS), passkeys/WebAuthn support, session management, role-based access control (RBAC), rate limiting, and database adapters. Use when adding authentication to applications, implementing OAuth flows, setting up 2FA/MFA, managing user sessions, configuring authorization rules, or building secure authentication systems for web applications.
chrome-devtools
Browser automation, debugging, and performance analysis using Puppeteer CLI scripts. Use for automating browsers, taking screenshots, analyzing performance, monitoring network traffic, web scraping, form automation, and JavaScript debugging.
code-review
Use when receiving code review feedback (especially if unclear or technically questionable), when completing tasks or major features requiring review before proceeding, or before making any completion/success claims. Covers three practices - receiving feedback with technical rigor over performative agreement, requesting reviews via code-reviewer subagent, and verification gates requiring evidence before any status claims. Essential for subagent-driven development, pull requests, and preventing false completion claims.
databases
Work with MongoDB (document database, BSON documents, aggregation pipelines, Atlas cloud) and PostgreSQL (relational database, SQL queries, psql CLI, pgAdmin). Use when designing database schemas, writing queries and aggregations, optimizing indexes for performance, performing database migrations, configuring replication and sharding, implementing backup and restore strategies, managing database users and permissions, analyzing query performance, or administering production databases.
Debugging
Systematic debugging framework ensuring root cause investigation before fixes. Includes four-phase debugging process, backward call stack tracing, multi-layer validation, and verification protocols. Use when encountering bugs, test failures, unexpected behavior, performance issues, or before claiming work complete. Prevents random fixes, masks over symptoms, and false completion claims.
devops
Deploy and manage cloud infrastructure on Cloudflare (Workers, R2, D1, KV, Pages, Durable Objects, Browser Rendering), Docker containers, and Google Cloud Platform (Compute Engine, GKE, Cloud Run, App Engine, Cloud Storage). Use when deploying serverless functions to the edge, configuring edge computing solutions, managing Docker containers and images, setting up CI/CD pipelines, optimizing cloud infrastructure costs, implementing global caching strategies, working with cloud databases, or building cloud-native applications.
og-image
Generate social media preview images (Open Graph) and configure meta tags. Creates a screenshot-optimized page using the project's existing design system, captures it at 1200x630, and sets up all social sharing meta tags.
visionos-immersive-media-developer
Implement immersive and spatial video experiences on Apple Vision Pro (visionOS 27), including AVKit AVExperienceController, RealityKit VideoPlayerComponent setup, Apple Projected Media Profile (APMP), portal/progressive/full immersive viewing modes, transitions and events, comfort mitigation, and Apple Immersive Video authoring workflows.
visionos-widgetkit-developer
Build and debug WidgetKit widgets for Apple Vision Pro (visionOS), including mounting styles (elevated/recessed), textures (glass/paper), proximity-aware layouts via LevelOfDetail, interactive widgets with AppIntents, widget rendering modes (accented/fullColor), and timeline update troubleshooting. (visionOS widgets are pinned spatial objects, not watch complications.)
usdkit-runtime-developer
Build USDKit runtime editing flows on visionOS 27, macOS 27, or iOS 27. Use when Swift code imports USDKit, opens or creates USDStage and USDLayer values, edits USDPrim attributes, observes USDStage.ObjectsDidChange, exports runtime USD packages, or bridges live stages through RealityKit USDStageComponent.
usd-editor
Guide for modifying USD ASCII (.usda) files and command-line USD workflows, including prims, properties, composition arcs, variants, transforms, usdcat, usdchecker, usdrecord, usdtree, usdzip, and usdedit. Use when editing or reviewing .usda files by hand, validating USD/USDZ assets, or working in an asset pipeline outside runtime Swift USDKit.
coding-standards-enforcer
Enforce repository coding standards for Swift 6.2 strict concurrency, actor isolation, @Observable models, SWIFT_APPROACHABLE_CONCURRENCY, @concurrent functions, and modern Swift APIs across visionOS app code. Use when reviewing, writing, or migrating Swift code in this plugin's scope.
realitykit-animation-physics
Implement and debug RealityKit animation, character controllers, skeletal poses, IK, body tracking, blendshapes, animation graphs, retargeting, root motion, navigation, behavior trees, collision, physics bodies, joints, forces, particles, compute simulations, and cloth on visionOS 27. Use when a RealityKit task is primarily about motion, character behavior, physical simulation, hit-test collision shape details, particle simulation, or animation/physics troubleshooting.
arkit-spatial-tracking-providers
Build and debug ARKit spatial tracking providers for visionOS 27: WorldTrackingProvider, PlaneDetectionProvider, SceneReconstructionProvider, RoomTrackingProvider, and SharedCoordinateSpaceProvider. Use when implementing world anchors, device pose queries, surface placement, mesh reconstruction, room context, or shared coordinate spaces.
arkit-rendering-context-providers
Build and debug ARKit rendering-context providers for visionOS 27: EnvironmentLightEstimationProvider, StereoPropertiesProvider, and VisualFidelityProvider. Use when matching virtual lighting to the environment, informing custom stereo rendering, coaching device fit, or tuning foveated field of view.
arkit-reference-tracking-providers
Build and debug ARKit reference and marker tracking providers for visionOS 27: ImageTrackingProvider, ObjectTrackingProvider, BarcodeDetectionProvider, and AccessoryTrackingProvider. Use when anchoring to known images, tracked 3D reference objects, barcodes, or supported accessories.
realitykit-rendering-materials
Implement and debug RealityKit rendering, materials, lighting, cameras, visual effects, post-processing, render cost controls, Gaussian splats, decals, lightmaps, probes, LOD, and occlusion on visionOS 27. Use when a RealityKit task is primarily about visual appearance, mesh/material display, lights, shadows, tone mapping, bloom, camera projection, rendering performance, or choosing rendering components instead of animation, audio, interaction, or custom ECS behavior.
arkit-camera-access-providers
Build and debug ARKit camera access providers for visionOS 27: CameraFrameProvider and CameraRegionProvider. Use when accessing camera frame streams, region-scoped camera content, custom computer-vision pipelines, or troubleshooting camera-access authorization, entitlement, enterprise, format, and support issues.
tkr-skill-writer
Guide for creating and structuring skills with consistent formatting, clear documentation, and proper reference organization. Use when creating new skills or updating existing skill documentation.
swiftui-chart3d-developer
Build SwiftUI Chart3D and Swift Charts 3D visualizations for visionOS 27 and Apple platforms. Use when implementing Chart3D, SurfacePlot, 3D PointMark, RuleMark, RectangleMark, Chart3DPose, 3D chart scales, axis labels, camera projection, or spatial data-visualization interactions.
spatial-swiftui-developer
Design and implement visionOS 27 SwiftUI scenes that integrate RealityKit content. Use when building spatial UI with RealityView, Model3D, attachments, volumetric windows, ImmersiveSpace, spatial gestures, windowing, spatial layout, or when choosing SwiftUI vs RealityKit APIs for 3D presentation.
spatial-app-architecture
Choose and refactor visionOS app architecture across surfaces, scene boundaries, state ownership, and file layout. Use when deciding window vs volume vs immersive space, splitting a feature across scenes, cleaning up a monolithic spatial root, or defining the ownership map before implementing SwiftUI or RealityKit details.
shadergraph-editor
Author, load, and troubleshoot Reality Composer Pro Shader Graph materials for RealityKit on visionOS. Use when building Shader Graph materials, exposing promoted inputs for runtime control, debugging exported USD and MaterialX interop, or building shader graphs programmatically in Swift on visionOS 27.
realitykit-ecs-systems
Design, implement, and debug custom RealityKit components, systems, ECS queries, component registration, update loops, Codable component state, and per-frame multi-entity behavior on visionOS. Use when documented RealityKit components do not represent the needed state or behavior, when behavior spans multiple entities, or when a task needs custom System and Component architecture instead of SwiftUI view logic.
arkit-hand-tracking-provider
Build and debug HandTrackingProvider on visionOS 27. Use when implementing hand anchors, hand joint transforms, custom hand gestures, hand-driven interactions, hand visualizations, or troubleshooting hand-tracking authorization, support, and lifecycle behavior.
realitykit-visionos-developer
Route RealityKit work on visionOS 27 and handle core entity/component basics, RealityView scene setup, asset loading, input targets, SwiftUI attachments, anchoring, portals, synchronization, and USDStage bridge usage. Use for general RealityKit triage, choosing documented components, loading Reality Composer Pro, USD, USDZ, or .reality content, and deciding whether to hand off to realitykit-rendering-materials, realitykit-animation-physics, realitykit-audio-spatial, realitykit-ecs-systems, spatial-preview-developer, usdkit-runtime-developer, usd-editor, shadergraph-editor, ARKit, SwiftUI, or build-debug skills.
realitykit-audio-spatial
Implement and debug RealityKit spatial audio, ambient audio, channel audio, audio libraries, audio mix groups, reverb, grouped playback, and acoustic simulation on visionOS 27. Use when a RealityKit task is primarily about placing sound in 3D, loading or organizing audio resources, controlling channel or ambient playback, mixing groups, room acoustics, or audio behavior tied to RealityKit entities.
shareplay-developer
Build, integrate, and troubleshoot SharePlay GroupActivities features for visionOS 27, including GroupActivity definitions, activation flows, GroupSession lifecycle, messaging and journals, ShareLink and SharePlay UI surfaces, and spatial coordination.
arkit-visionos-developer
Router for ARKit features on visionOS 27, including ARKitSession setup, authorization, provider selection, anchor processing, and RealityKit integration. Use when choosing an ARKit provider set, combining multiple ARKit providers, or troubleshooting shared ARKit lifecycle behavior before routing to focused provider skills.
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