React 18+ with Vite patterns - use for Mini App frontend development, component structure, hooks, and TypeScript setup

Upgrades existing websites and apps to premium quality. Audits current design, identifies generic AI patterns, and applies high-end design standards without breaking functionality. Works with any CSS framework or vanilla CSS.

Use when identifying bad code/design and selecting refactor targets - produces a diagnosis report with smells, risks, and refactor vs rewrite decision

Generate sound effects from text descriptions using ElevenLabs. Use when creating sound effects, generating audio textures, producing ambient sounds, cinematic impacts, UI sounds, or any audio that isn't speech. Supports looping, duration control, and prompt influence tuning.

Query, design, migrate, and optimize SQL databases. Use when working with SQLite, PostgreSQL, or MySQL — schema design, writing queries, creating migrations, indexing, backup/restore, and debugging slow queries. No ORMs required.

Use when beginning any design process - orchestrates gathering context, clarifying requirements, brainstorming solutions, and documenting validated designs to create implementation-ready design documents

Use when designing system architecture, APIs, components, or data models - provides a structured design workflow with validation and documentation outputs.

Tailwind CSS v4 guidance: utility-first patterns, @theme directive for color/spacing/font config, @source for content paths, dark mode, responsive design, oklch colors, custom variants, v4 vs v3 differences. Use when user writes Tailwind utility classes, configures @theme or @source in CSS, asks about v4 syntax, or styles components.

Use when writing production code. Enforces RED-GREEN-REFACTOR cycle: write failing test, make it pass, improve design. Prevents test-after development and ensures verified behavior.

Non-visual text quality reviewer for web applications. Use when reviewing any page, component, or template for low-quality alt text, aria-labels, or button names. Detects template variables ({0}, {{var}}), code syntax in text attributes (property.alttext), placeholder text as labels, typos in short accessible names, whitespace-only names, and duplicate control labels. Enforces WCAG 1.1.1 (Non-text Content), 4.1.2 (Name, Role, Value), and 2.5.3 (Label in Name). Applies to any web framework or vanilla HTML/CSS/JS.

Review source code for UI quality, accessibility violations, and performance anti-patterns. Static code analysis (NOT screenshot-based). Provides file:line references with severity, WCAG refs, and fix suggestions.

Implements UI components from scratch based on design references (Figma, screenshots, mockups) with intelligent validation and adaptive agent switching. Use when user provides a design and wants pixel-perfect UI implementation with design fidelity validation. Triggers automatically when user mentions Figma links, design screenshots, or wants to implement UI from designs.

Implements UI components from scratch based on design references (Figma, screenshots, mockups) with intelligent validation and adaptive agent switching. Use when user provides a design and wants pixel-perfect UI implementation with design fidelity validation. Triggers automatically when user mentions Figma links, design screenshots, or wants to implement UI from designs.

User experience flows - journey mapping, UX validation, error recovery

Apply when designing or modifying a VTEX IO storefront theme app — the app that owns `store/blocks.json`, `store/routes.json`, `store/templates/`, `store/contentSchemas.json`, and the storefront page tree assembled from `store.home`, `store.product`, `store.search`, `store.custom`, and other native page templates. Covers how a theme app extends a base theme, declares routes, composes blocks across pages, and how its `store/` files relate to merchant Site Editor content. Use for theme scaffolding, custom page routes, theme-level overrides, or reviewing whether a change belongs in the theme app, in a component app, or in app settings.

Export Webflow Designer components to React/Next.js code for external projects. Configure devlink settings in webflow.json, sync design updates with devlink sync, validate generated code, show diffs, and provide integration examples. Use when building with Webflow designs in React/Next.js.

Write production-ready code end-to-end via a full TDD lifecycle (design, skeleton, implement, test, refactor). Triggers when: "write a function", "implement this feature", "build a new module", "add a feature". Also use when: starting a new component from scratch, turning a spec or ticket into working code, creating a CLI or API endpoint with tests. Examples: "write a function that parses dates", "implement user authentication", "build a rate limiter module".

Help users write effective specs and design documents. Use when someone is creating technical specs, feature specs, design docs, or trying to communicate product requirements to engineering and design teams.

Use this skill when users mention "component usage", "where is this component used", "deprecate component", "migration impact", "component analytics", or want to track and analyze component usage across the codebase with deprecation planning and migration impact analysis.

This skill should be used when the user asks to "create a component", "build static UI", "design with TypeScript", "use compound components", "implement contract-first UI", "create React component", "build with Shadcn", or mentions TypeScript interfaces for components, compound component patterns, or Server Components. Provides contract-first static UI methodology with compound components.

This skill should be used when the user asks to "add client interactivity", "implement form validation", "add event handlers", "use client state", "add Zod validation", "implement React hooks", "add local state", "make component interactive", "add form with validation", "use React Hook Form", or needs guidance on client-side events, form handling, optimistic updates, or when to add "use client" directive.

Use this skill when the user wants to author, design, scope, or refine an Agent Skill (a SKILL.md file). Trigger phrases include "build a new skill", "design an agent skill", "scope a SKILL.md", "how should I structure this skill", "write a skill for X", "my skill isn't working well", or any request to improve an existing SKILL.md. Walks the user through an empirical, test-first process — probe the agent for real failures, design only for genuine knowledge gaps, iterate against runnable examples, and verify across models.

PDF viewer component — renders PDF pages with react-pdf (PDF.js), highlights matching text spans from RAG search results, scroll-to-page navigation, and zoom controls. Use this skill when the user says "add PDF viewer", "setup PDF rendering", "setup ai-rag-viewer", or "add document viewer".

ALWAYS use when working with Angular Components, component architecture, @Component decorator, inputs, outputs, or component design patterns.

This skill should be used when the user asks to "design system", "create ADR", "review architecture", or mentions architectural decisions.

ARIA implementation specialist for web applications. Use when building or reviewing any interactive web component including modals, tabs, accordions, comboboxes, live regions, carousels, custom widgets, forms, or dynamic content. Also use when reviewing ARIA usage for correctness. Applies to any web framework or vanilla HTML/CSS/JS.

Design and implement VPCs and networking. Configure subnets, route tables, and security groups. Use when setting up AWS network infrastructure.

Use when the user mentions UX flow issues, dead-end views, dismiss traps, missing empty states, broken user journeys, or wants a UX audit of their iOS app.

Expert knowledge for Azure Deployment Environments development including troubleshooting, best practices, decision making, architecture & design patterns, limits & quotas, security, configuration, integrations & coding patterns, and deployment. Use when configuring ADE catalogs, Git schemas, RBAC/managed identities, custom image workflows, or CI/CD deployments, and other Azure Deployment Environments related development tasks. Not for Azure DevTest Labs (use azure-devtest-labs), Azure Dev Box (use azure-dev-box), Azure Integration Environments (use azure-integration-environments), Azure Managed Applications (use azure-managed-applications).

Expert knowledge for Azure Energy Data Services development including troubleshooting, decision making, architecture & design patterns, security, configuration, integrations & coding patterns, and deployment. Use when configuring ADME partitions/zones, legal tags & ACLs, Petrel/seismic integrations, or Geospatial CZ on AKS, and other Azure Energy Data Services related development tasks. Not for Azure Data Explorer (use azure-data-explorer), Azure Synapse Analytics (use azure-synapse-analytics), Azure Data Factory (use azure-data-factory), Azure Databricks (use azure-databricks).

Expert knowledge for Azure Health Bot development including best practices, decision making, architecture & design patterns, security, configuration, and integrations & coding patterns. Use when wiring Health Bot to channels/APIs, configuring scenarios/cards, securing PHI, using orchestrator, or estimating costs, and other Azure Health Bot related development tasks. Not for Azure AI Bot Service (use azure-bot-service), Azure Communication Services (use azure-communication-services), Azure Functions (use azure-functions).

Expert knowledge for Azure Microsoft Discovery development including troubleshooting, best practices, decision making, architecture & design patterns, limits & quotas, security, configuration, integrations & coding patterns, and deployment. Use when building Discovery Engine shared sessions, supercomputer jobs, Log Analytics queries, or Docker-based tool integrations, and other Azure Microsoft Discovery related development tasks.

Expert knowledge for Azure Quantum development including troubleshooting, best practices, decision making, architecture & design patterns, limits & quotas, security, configuration, integrations & coding patterns, and deployment. Use when running IonQ/Rigetti jobs, managing quotas, securing workspaces, using QDK/VS Code, or hybrid quantum workflows, and other Azure Quantum related development tasks. Not for Azure HPC Cache (use azure-hpc-cache), Azure Databricks (use azure-databricks), Azure Synapse Analytics (use azure-synapse-analytics), Azure Machine Learning (use azure-machine-learning).

Systematically tests UI functionality, validates design fidelity with AI visual analysis, monitors console output, tracks network requests, and provides debugging reports using Chrome Extension MCP tools. Use after implementing UI features, for design validation, when investigating console errors, for regression testing, or when user mentions testing, browser bugs, console errors, or UI verification.

Business model design using Alexander Osterwalder's 9 building blocks. Use when: business model, canvas, value proposition, customer segments, revenue streams, startup planning, analyze business, business strategy.

Define a new category where your product wins by default. Reframe the buying decision. Triggers on: "create a category", "category design", "define my category", "category of one", "reframe the market", "position as category king", "new category", "category creation", "own a category", "category strategy", "competitive positioning", "strategic positioning", "market reframing", "be the only option", "change the buying criteria", "category king".

Character consistency across AI-generated images with reference sheets and LoRA techniques. Covers turnaround views, expression sheets, color palettes, and style consistency tricks. Use for: character design, game art, illustration, animation, comics, visual novels. Triggers: character design, character sheet, character consistency, character reference, turnaround sheet, expression sheet, character art, consistent character, character concept, reference sheet, character creation, oc design, character bible

Character consistency across AI-generated images with reference sheets and LoRA techniques. Covers turnaround views, expression sheets, color palettes, and style consistency tricks. Use for: character design, game art, illustration, animation, comics, visual novels. Triggers: character design, character sheet, character consistency, character reference, turnaround sheet, expression sheet, character art, consistent character, character concept, reference sheet, character creation, oc design, character bible

Character consistency across AI-generated images with reference sheets and LoRA techniques. Covers turnaround views, expression sheets, color palettes, and style consistency tricks. Use for: character design, game art, illustration, animation, comics, visual novels. Triggers: character design, character sheet, character consistency, character reference, turnaround sheet, expression sheet, character art, consistent character, character concept, reference sheet, character creation, oc design, character bible

Character consistency across AI-generated images with reference sheets and LoRA techniques. Covers turnaround views, expression sheets, color palettes, and style consistency tricks. Use for: character design, game art, illustration, animation, comics, visual novels. Triggers: character design, character sheet, character consistency, character reference, turnaround sheet, expression sheet, character art, consistent character, character concept, reference sheet, character creation, oc design, character bible

Structured competitive analysis with feature matrices, SWOT, positioning maps, and UX review. Covers research frameworks, pricing comparison, review mining, and visual deliverables. Use for: market research, competitive intelligence, investor decks, product strategy, sales enablement. Triggers: competitor analysis, competitive analysis, competitor teardown, market research, competitive intelligence, swot analysis, competitor comparison, market landscape, competitor review, competitive landscape, feature comparison, market positioning

Structured competitive analysis with feature matrices, SWOT, positioning maps, and UX review. Covers research frameworks, pricing comparison, review mining, and visual deliverables. Use for: market research, competitive intelligence, investor decks, product strategy, sales enablement. Triggers: competitor analysis, competitive analysis, competitor teardown, market research, competitive intelligence, swot analysis, competitor comparison, market landscape, competitor review, competitive landscape, feature comparison, market positioning

Structured competitive analysis with feature matrices, SWOT, positioning maps, and UX review. Covers research frameworks, pricing comparison, review mining, and visual deliverables. Use for: market research, competitive intelligence, investor decks, product strategy, sales enablement. Triggers: competitor analysis, competitive analysis, competitor teardown, market research, competitive intelligence, swot analysis, competitor comparison, market landscape, competitor review, competitive landscape, feature comparison, market positioning

Structured competitive analysis with feature matrices, SWOT, positioning maps, and UX review. Covers research frameworks, pricing comparison, review mining, and visual deliverables. Use for: market research, competitive intelligence, investor decks, product strategy, sales enablement. Triggers: competitor analysis, competitive analysis, competitor teardown, market research, competitive intelligence, swot analysis, competitor comparison, market landscape, competitor review, competitive landscape, feature comparison, market positioning

Generate low-fidelity concept sketches for a design challenge as structured concept briefs, storyboard panels, low-fi wireflows (Mermaid flowcharts), key touchpoint specs, and annotations. Produces 2-4 concept variants side-by-side with a comparison table. Three modes — autonomous, comparison, elaboration. Stays at concept level; detailed wireframing and prototyping happen in Phase 4 skills.

Use this skill when users need to remove customer friction, improve customer success, handle objections, design guarantees, or eliminate obstacles between customers and results. Activates for customer success issues, objection handling, or "customers can't get results" problems.

CLI UX/spec: args, flags, help, output, errors, config, dry-run.

Create UX design docs with responsive ASCII variations

Dive into the world of Flutter, Google's UI toolkit, and learn how to build cross-platform apps with ease using this introductory guide and accompanying "Flutter Take 5" video series.

Design tokens system using CSS Custom Properties for consistent styling. Use for creating color palettes, spacing scales, typography systems, and theming (dark/light mode). Triggers on requests for design tokens, CSS variables, theming, color systems, spacing scales, or consistent styling.

Research-backed customer persona creation with market data and avatar generation. Covers demographics, psychographics, jobs-to-be-done, journey mapping, and anti-personas. Use for: marketing strategy, product development, UX research, sales enablement, content strategy. Triggers: customer persona, buyer persona, user persona, target audience, ideal customer, customer profile, audience research, user research, icp, ideal customer profile, target market, customer avatar, audience persona

Research-backed customer persona creation with market data and avatar generation. Covers demographics, psychographics, jobs-to-be-done, journey mapping, and anti-personas. Use for: marketing strategy, product development, UX research, sales enablement, content strategy. Triggers: customer persona, buyer persona, user persona, target audience, ideal customer, customer profile, audience research, user research, icp, ideal customer profile, target market, customer avatar, audience persona

Research-backed customer persona creation with market data and avatar generation. Covers demographics, psychographics, jobs-to-be-done, journey mapping, and anti-personas. Use for: marketing strategy, product development, UX research, sales enablement, content strategy. Triggers: customer persona, buyer persona, user persona, target audience, ideal customer, customer profile, audience research, user research, icp, ideal customer profile, target market, customer avatar, audience persona

Research-backed customer persona creation with market data and avatar generation. Covers demographics, psychographics, jobs-to-be-done, journey mapping, and anti-personas. Use for: marketing strategy, product development, UX research, sales enablement, content strategy. Triggers: customer persona, buyer persona, user persona, target audience, ideal customer, customer profile, audience research, user research, icp, ideal customer profile, target market, customer avatar, audience persona

Premium UI/UX design audit and refinement skill. Conducts systematic visual audits of existing apps and produces phased, implementation-ready design plans. Use this skill whenever the user asks to audit a UI, improve an app's visual design, make an interface feel more polished or premium, review design consistency, fix visual hierarchy, or refine spacing/typography/color. Also trigger when the user says "design review", "make it look better", "UI polish", "visual refinement", "design pass", "audit the design", or references making an app feel more professional. This skill is purely visual — it does not touch functionality, logic, or features. It elevates what exists.

Write design rationale for a delta

Managing design tokens and system context for LLM-driven UI development. Covers loading, persisting, and optimizing design decisions within context windows.

Design thinking methodology for human-centered problem solving. Use when facilitating design thinking workshops, user research sessions, or creative problem-solving activities.

Use this skill when designing or building Vizro dashboard layouts — grid configuration, component sizing, filter/parameter placement, selector types, or container patterns. Activate when the user is creating wireframes, defining page structure, placing controls, or sizing charts.

This skill should be used when the user asks for "code review", "review my code", "debug this", "design a system", "architecture review", "fix this UI", "optimize this", "what's wrong with this code", "cum sa creez", "proiecteaza", "fix bug", "logic error", "CSS issue", "frontend review", or any technical question requiring elite engineering judgment. Auto-activates on: code snippets, pull requests, system design, UI/frontend, algorithms, performance, bugs. Dr. House of IT — Elite Senior Principal Engineer persona (Top 0.01%).

Autonomous design space exploration loop for computer architecture and EDA. Runs a program, analyzes results, tunes parameters, and iterates until objective is met or timeout. Use when user says "DSE", "design space exploration", "sweep parameters", "optimize", "find best config", or wants iterative parameter tuning.

Integrate with Figma API for design automation and code generation. Use when extracting design tokens, generating React/CSS code from Figma components, syncing design systems, building Figma plugins, or automating design-to-code workflows. Triggers on Figma API, design tokens, Figma plugin, design-to-code, Figma export, Figma component, Dev Mode.

Certification coach for Flows apps. Captures the app name, value case, persona, problem, and design intent through a structured conversation and writes App-Brief.md at the repo root. This is the FIRST step of the Flows app certification flow — run it immediately after `npx @cognite/cli apps create`, before building. Use when the user asks to start an app brief, run the certification coach, fill out the app brief, or run flows-app-brief.

Frontend UI: pages, apps, components, polished non-generic design.

Odoo frontend JavaScript patterns for website themes. Covers publicWidget framework (complete pattern with editableMode handling), Owl v1/v2 component patterns, _t() translation best practices, Bootstrap 4-to-5 migration, version detection, and critical development rules. Supports Odoo 14-19. <example> Context: User wants to create a publicWidget user: "Create a publicWidget for my Odoo website" assistant: "I will create a publicWidget with editableMode handling and proper cleanup." <commentary>publicWidget creation.</commentary> </example> <example> Context: User asks about Owl components user: "How do I create an Owl component in Odoo 18?" assistant: "I will show the Owl v2 pattern with static template and props." <commentary>Owl component pattern.</commentary> </example> <example> Context: User needs help with translations user: "How do I translate JavaScript strings in Odoo?" assistant: "Use _t() at DEFINITION TIME for static labels, not runtime wrappers." <commentary>Translation best practices.</commentary> </example> <example> Context: User migrating Bootstrap classes user: "Convert Bootstrap 4 classes to Bootstrap 5 for Odoo 17" assistant: "Replace ml-* with ms-*, mr-* with me-*, text-left with text-start." <commentary>Bootstrap migration.</commentary> </example>

Generate images via Google Gemini AI (gemini-3.1-flash-image-preview or pro). Supports model selection, aspect ratios, resolutions (1K/2K/512), batch generation, image editing. Triggers: image, picture, photo, graphic, illustration, banner, logo, icon, thumbnail, header, hero image. Use when user wants AI-generated visual output.

Pause agent execution to have the human validate decisions, choose between options, answer freetext, or comment on a document — via the `hl` CLI. Every interaction is a kickoff that returns a job handle immediately; collect the human's answer later with `hl job result`. Use for material design decisions, approval gates, picks between meaningful alternatives, and markdown doc review. Not for trivial yes/no confirmations the agent should decide itself.

Write CSP-compatible Alpine.js components for Hyvä themes in Magento 2. This skill should be used when the user wants to create Alpine components, add interactivity to Hyvä templates, write JavaScript for Hyvä themes, or needs help with Alpine.js patterns that work with Content Security Policy. Trigger phrases include "create alpine component", "add interactivity", "alpine for hyva", "x-data component", "csp compatibility", "csp compliant javascript".

MUST activate when the project contains a uiBundles/*/src/ directory and the task involves uploading, attaching, or dropping files. Use this skill when adding file upload functionality to a UI bundle app. Provides progress tracking and Salesforce ContentVersion integration. This feature provides programmatic APIs ONLY — build custom UI using the upload() API. ALWAYS use this instead of building file upload from scratch with FormData or XHR.

This skill bootstraps a new prototype monorepo with the standard package structure: core, api, ui, mcp, and types packages — all wired up with Bun workspaces. It should be used when the user wants to start a new prototype, create a new project, scaffold a monorepo, or says anything like "new prototype", "new project", "let's start fresh", "set up the repo", "init", or "bootstrap."

Enables rich interactive UI components in chat responses. When presenting questions that require structured input (multiple choice, true/false, forms), embed interactive blocks that compatible clients render as native UI elements. Use when user asks for quizzes, exercises, surveys, or any structured input scenario.

Learn how to build a VSCode extension using a Lit web component, covering setup, template creation, component implementation, and extension activation.

Interactive markdown accessibility audit wizard. Runs a guided, step-by-step WCAG audit of markdown documentation. Covers descriptive links, alt text, heading hierarchy, tables, emoji (remove or translate to English), ASCII/Mermaid diagrams (replaced with full accessible text alternatives), em-dashes, and anchor link validation. Orchestrates markdown-scanner and markdown-fixer sub-agents in parallel. Produces a MARKDOWN-ACCESSIBILITY-AUDIT.md report with severity scores and remediation tracking. For web UI accessibility use web-accessibility-wizard. For Office/PDF documents use document-accessibility-wizard.

Medusa headless commerce - modules, workflows, API routes, admin UI

Expert knowledge for Microsoft Foundry Tools (aka Azure AI services, Azure Cognitive Services) development including troubleshooting, best practices, decision making, architecture & design patterns, limits & quotas, security, configuration, and integrations & coding patterns. Use when using Content Moderator, Content Understanding analyzers, document layout extraction, face detection, or REST/.NET APIs, and other Microsoft Foundry Tools related development tasks. Not for Microsoft Foundry (use microsoft-foundry), Microsoft Foundry Classic (use microsoft-foundry-classic), Microsoft Foundry Local (use microsoft-foundry-local).

MSWPackages catalog — official 1st-party prebuilt packages for common MSW features. Use this skill BEFORE writing a feature from scratch when the user asks for any standard game system (toast/notification, ranking/leaderboard, inventory/equipment, shop/store, world shop, mail, quest/achievement, dialog/NPC conversation, key binding, game event broadcast, player data/save, collection/dex, slash command, scrollview/virtualized list, drop table, global config, GM message, resource/currency, UI components). Always check the catalog first; if a package matches the requested feature, fetch its README and propose integrating instead of building from zero. Keywords: MSWPackages, package, prebuilt, integration.

Design multi-cloud architectures using a decision framework to select and integrate services across AWS, Azure, GCP, and OCI. Use when building multi-cloud systems, avoiding vendor lock-in, or leveraging best-of-breed services from multiple providers.

Performance optimization patterns for Next.js 14+ React Server Components. PROACTIVELY activate for: (1) Optimizing RSC data fetching, (2) Implementing streaming with Suspense, (3) Configuring caching and revalidation, (4) Parallel data fetching, (5) Partial Prerendering. Triggers: "rsc", "server component", "nextjs performance", "data fetching", "caching", "revalidate", "suspense", "streaming", "partial prerendering"

Design complete AL/BC solution using competitive solution design. Spawns 2-3 architect agents who debate approaches, then synthesizes winning plan.

Plan complex Blazor UI features by decomposing them into focused components. USE FOR: building a complex Blazor page with multiple sections, planning component decomposition, designing a multi-section dashboard or layout, breaking down a large UI feature into composable components, pages with sidebars and content panels, any page with 3+ distinct visual sections or multiple interacting sub-features, identifying parent-child relationships and data flow. DO NOT USE FOR: creating new Blazor projects or apps from scratch (use create-blazor-project), implementing a single individual component (use author-component), writing component code with parameters and EventCallback (use author-component), or simple single-component pages.

Design a new PM skill through guided conversation. Use when you have raw content or an idea and want to shape it into a compliant skill.

Use this skill when writing product requirements documents, prioritizing features, creating user stories, defining acceptance criteria, or setting product metrics. Trigger phrases: 'write a PRD for', 'prioritize this feature backlog', 'write user stories for', 'help me define acceptance criteria', 'what metrics should we track for'. Not for writing code, designing UI mockups, or conducting user research interviews.

Comprehensive prompt engineering for coding agents covering structured instruction design, few-shot prompting, chain-of-thought, decomposition, agent workflow patterns, and reliability techniques for multi-step pipelines.

Create original surveys, benchmarks, and aggregated data nobody else has. Automate data collection for content moats. Triggers on: "create original data", "proprietary data", "survey design", "benchmark study", "original research", "data-driven content", "create a survey", "industry benchmark", "aggregated data", "unique data", "first-party data", "data moat", "generate research data", "create a study", "original statistics", "data nobody else has", "competitive data advantage".

Generates React components with TypeScript, hooks, and best practices. Use when user asks to "create React component", "generate component", or "scaffold component".

When the user wants to design, launch, or optimize an in-app referral / invite / share-to-earn program — including reward structure, mechanics, fraud prevention, deep link setup, and viral coefficient measurement. Use when the user mentions "referral program", "invite a friend", "refer and earn", "share to earn", "viral loop", "viral coefficient", "K-factor", "double-sided rewards", "give X get X", "referral rewards", "invite link", "share sheet", "Branch referrals", "in-app invites", or "how to make my app go viral". For deep link infrastructure that referrals depend on, see attribution-setup. For organic content-driven virality (UGC, creator), see creator-ugc-marketing.

Responsive web design patterns for mobile-first development. Use for creating fluid layouts, breakpoint systems, responsive typography, flexible grids, and adaptive components. Triggers on requests for responsive layouts, mobile-first CSS, breakpoints, media queries, fluid design, or multi-device support.

Reframe code design through functional programming principles for agent-assisted development. This skill SHOULD be used when the user says "think functional", "think FP", "make this pure", "separate effects", "where should this side effect go", "this function does too much", "how should I structure this for agents", "make this easier to review", "reduce context needed", or when planning module structure, store design, or code that agents will write and humans will review. Applies FP discipline within any language to maximize agent effectiveness and human reviewability.

Unified semantic exploration skill combining qmd hybrid retrieval with cgg call graph generation. Use when the user says "search the codebase", "find ADRs about X", "what specs cover Y", "search architecture", or wants to semantically explore design artifacts and code together.

Write tests for Storefront Next using Vitest unit tests, Storybook stories, interaction tests, snapshot tests, and accessibility tests. Use when writing component tests, creating Storybook stories, running test coverage, or setting up test utilities. Covers testing-library patterns, play functions, and coverage thresholds.

Add or customize shadcn/ui components in the shared UI package. Use when adding new components from shadcn registry or updating existing component variants.

Design, apply, and maintain SKOS taxonomies for joelclaw agent workflows. Use when defining concept schemes, classifying agent inputs/outputs, mapping to external vocabularies, or integrating taxonomy metadata with Typesense retrieval.

Svelte component patterns. Use for web components, component libraries (Bits UI, Ark UI, Melt UI), form patterns, or third-party integration.

SwiftUI Liquid Glass: implement, adopt, refactor, review correctness/perf/design.

End-to-end observational epidemiology analysis — from research question (PECO Population/Exposure/Comparator/Outcome) to publication-ready statistical report. Covers cohort/case-control/cross-sectional design, regression with confounders, propensity scoring, sensitivity analysis. Writes Python code for every step. Use for epidemiology study analysis, NHANES/UK-Biobank-style analyses.

Add, review, or fix JavaScript interop in Blazor components. USE FOR: calling JavaScript from Blazor, calling .NET from JavaScript, collocated .razor.js modules, IJSRuntime, IJSObjectReference lifecycle, DotNetObjectReference, ElementReference, timing rules for when JS is available, IAsyncDisposable disposal of JS references, server-side JS interop safety. DO NOT USE FOR: general Blazor component authoring without JS interop needs (use author-component), forms (use collect-user-input).