Skills
98,873 packaged capabilities and playbooks for agents. Install any of them with one command.
Development
React component composition patterns for building flexible, maintainable UIs. Covers compound components, context-based state, explicit variants, and React 19 APIs. Use when designing component APIs, refactoring prop-heavy components, or building reusable component libraries.
Provides comprehensive guidance for React Hooks including useState, useEffect, useContext, useReducer, useMemo, useCallback, custom hooks, and hook patterns. Use when the user asks about React Hooks, needs to use hooks in functional components, create custom hooks, or optimize hook performance.
Complete React Native and Expo optimization guide combining Callstack profiling with Vercel code patterns. Covers FPS, TTI, bundle size, memory, lists, animations, state, UI, and React Compiler. Use for any React Native performance, debugging, or best practices task.
Convert any React component/app into an Axure-importable prototype component, generating spec-compliant configuration declarations and runtime wrapper code. For cases where an existing React project needs to be exported as an Axure interactive prototype.
Load this skill for any project with a user interface that must work across screen sizes and input methods, such as websites, web apps, dashboards, marketing pages, emails, or design systems. Use when building or reviewing layouts, choosing breakpoints, setting up fluid type, sizing touch targets, or making components adapt to their container. One design must serve phones, tablets, laptops, desktops, touch, mouse, and keyboard. Prefers content-first, mobile-first, framework-agnostic CSS and Baseline-stable features.
Use Riverpod mutations for UI-driven async operations like form submit; Mutation.run, MutationIdle/Pending/Success/Error, Mutation.reset, keyed mutations. Use when showing loading/error/success for a single action (e.g. submit button) without polluting provider state. Use this skill when the user asks about mutations, loading state for actions, or form submission with Riverpod.
Persist Riverpod notifier state offline with Storage and persist(); riverpod_sqflite, JsonPersist, key, destroyKey, cache duration, testing with in-memory storage. Use when saving state across app restarts or offline. Use this skill when the user asks about offline persistence, persisting state, or Riverpod storage.
Override Riverpod providers for tests, debugging, or environment-specific behavior; ProviderScope and ProviderContainer overrides, overrideWith, overrideWithValue. Use when mocking providers in tests, injecting different implementations, or scoping provider behavior. Use this skill when the user asks about overrides, testing Riverpod, or mocking providers.
Reduce rebuilds with ref.watch(provider.select(...)); select a subset of state so widgets rebuild only when that part changes. Use when optimizing performance or when a widget uses only one field of a large object. Use this skill when the user asks about select, reducing rebuilds, or optimizing Riverpod watch.
Use when building, animating, or debugging Roblox GUI elements including HUDs, menus, world-space UI, and player labels. Triggers on: ScreenGui setup, SurfaceGui or BillboardGui placement, UDim2 sizing questions, TweenService UI animations, responsive scaling, LocalScript GUI logic, ResetOnSpawn issues, or any Frame/TextLabel/ImageButton layout work.
Roblox Luau development — implement, review, and refactor Luau gameplay scripts; diagnose Roblox gameplay, replication, performance, DataStore, and runtime issues; and understand or sync Rojo-managed Roblox codebases. Use when working on Roblox, Luau, Roblox Studio code, or Rojo projects, or when debugging Roblox runtime issues.
Save & publish a Salla App Function — `salla_functions action=save` deploys to demo stores (poll `action=deploy_status`), then the app is published. Use after validating the handler, when you're ready to deploy and ship a function to production. Routed from salla-app-functions; test first → salla-app-functions-test; app publication → salla-app-builder / salla-publication-consistency; OAuth/tokens → salla-app-auth; webhook verification → salla-webhooks.
Build a Salla shipping app in two models — Shipping Management (one carrier: the modern Salla AWB model, App Functions inside Salla Partners, no backend) or Order Fulfilment (auto-dispatch across carriers). Create it, configure zones via salla_shipping, implement the sync App Functions shipment.creating (returns a Shipment with AWB + PDF label) and shipment.cancelling (returns Resp). Use when building for any carrier, AWB, label, tracking, COD, or return task. App Functions → salla-app-functions; OAuth → salla-app-auth; webhooks, publish → salla-webhooks, salla-app-builder.
This skill should be used when the user asks to "design system architecture", "evaluate microservices vs monolith", "create architecture diagrams", "analyze dependencies", "choose a database", "plan for scalability", "make technical decisions", or "review system design". Use for architecture decision records (ADRs), tech stack evaluation, system design reviews, dependency analysis, and generating architecture diagrams in Mermaid, PlantUML, or ASCII format.
Use when the user needs API design, microservices architecture, event-driven systems, database integration, caching strategies, or backend observability. Triggers: REST/GraphQL API implementation, service architecture design, message queue setup, rate limiting, health checks, OpenTelemetry integration.
Technical SEO audit across 9 categories: crawlability, indexability, security, URL structure, mobile, Core Web Vitals, structured data, JavaScript rendering, and IndexNow protocol. Use when user says "technical SEO", "crawl issues", "robots.txt", "Core Web Vitals", "site speed", or "security headers".
Manages shadcn components and projects — adding, searching, fixing, debugging, styling, and composing UI. Provides project context, component docs, and usage examples. Applies when working with shadcn/ui, component registries, presets, --preset codes, or any project with a components.json file. Also triggers for "shadcn init", "create an app with --preset", or "switch to --preset".
Manages shadcn components and projects — adding, searching, fixing, debugging, styling, and composing UI. Provides project context, component docs, and usage examples. Applies when working with shadcn/ui, component registries, presets, --preset codes, or any project with a components.json file. Also triggers for "shadcn init", "create an app with --preset", or "switch to --preset".
Diagnose and fix performance problems in Shiny for Python apps — slow startup, sluggish interactions, blocking operations, and apps that struggle beyond a handful of concurrent users. Use when a Shiny for Python app is slow, hangs, recomputes too much, times out, or must support more users; when the user asks to "speed up", "optimize", or "make faster" a Python Shiny app; or when preparing a prototyped app for real-world traffic.
Use when creating skill repositories, standardizing or validating skill repo structure, setting up composer/release workflows, configuring split licensing (MIT + CC-BY-SA-4.0), fixing plugin.json / SKILL.md validation or version-parity errors, writing, changing or validating evals/evals.json assertions and samples (graded as POSIX ERE by grep -qiE), or releasing a skill version (version bump, tagging)
Master smart contract security best practices to prevent common vulnerabilities and implement secure Solidity patterns. Use when writing smart contracts, auditing existing contracts, or implementing security measures for blockchain applications.
SpacetimeDB development best practices for TypeScript server modules and client SDK. This skill should be used when writing, reviewing, or refactoring SpacetimeDB code to ensure optimal patterns for real-time, multiplayer applications. Triggers on tasks involving SpacetimeDB modules, tables, reducers, subscriptions, or React integration.
Turn fuzzy intent into shared understanding and acceptance criteria — specification as a conversation, run one question at a time, before any story is split or planned. Use when an idea, feature request, or problem statement has no agreed rules or examples yet ("let's spec this out", "what should this actually do?", "we need acceptance criteria"). Produces an example map and acceptance criteria written back into the team's own story artifact, plus candidate glossary terms and parked questions. The agent-facilitated round is a draft for review by the accountable owner and, when risk or shared ownership warrants it, the relevant human perspectives. For decision trees with no artifact, use grill-me where installed or this skill's one-question protocol; for tightening an existing artifact, see find-gaps; for slicing agreed work, see story-splitting.
Use when doing ANY task involving Supabase. Triggers: Supabase products (Database, Auth, Edge Functions, Realtime, Storage, Vectors, Cron, Queues); client libraries and SSR integrations (supabase-js, @supabase/ssr) in Next.js, React, SvelteKit, Astro, Remix; auth issues (login, logout, sessions, JWT, cookies, getSession, getUser, getClaims, RLS); Supabase CLI or MCP server; schema changes, migrations, declarative schemas, security audits, Postgres extensions (pg_graphql, pg_cron, pg_vector); debugging and troubleshooting errors or unexpected behavior on Supabase projects (HTTP errors, Postgres errors, RLS surprises, permission denied, schema cache issues, timeouts, Edge Function crashes, Realtime drops, Storage failures) and reading or querying logs (Logs Explorer, ClickHouse).
Use this skill when a user asks how to generate, integrate, or implement a Word‑like document editor in ASP.NET MVC using Syncfusion. Trigger it for requests involving the Syncfusion ASP.NET MVC Document Editor, ASP.NET MVC‑based editor integration, document editing and formatting, comments and track changes, working with tables and images, managing headers and footers, applying document protection, and building end‑to‑end document workflows in ASP.NET MVC applications.
Guide for implementing Syncfusion Gauge controls in Windows Forms applications. Use when creating data visualization gauges such as RadialGauge for circular displays (speedometers, temperature dials), LinearGauge for horizontal/vertical bars and progress indicators, or DigitalGauge for LED-style alphanumeric displays. Covers dashboard gauges, instrument panels, real-time monitoring, and KPI displays with needles, ranges, and scales.
Implement Syncfusion Windows Forms Smith Chart (SfSmithChart) control for visualizing impedance and admittance of transmission lines. Use this when working with high-frequency circuit applications, RF engineering, or transmission line analysis. Covers normalized resistance/reactance plotting, normalized conductance/susceptance visualization, series configuration, axes customization, markers, legends, and tooltips.
Guide for implementing Syncfusion StatusBarAdvPanel control in Windows Forms applications. Use when creating custom status bar panels with marquee text animation, key state indicators, date time displays, or culture information panels. Covers panel types, appearance styling, gradients, marquee animation, alignment, borders, themes, and event handling for enhanced status bar panel displays.
Guide for implementing Syncfusion EditControl (SyntaxEditor) in Windows Forms applications. Use when creating interactive code editors with syntax highlighting, IntelliSense, multi-language support, or Visual Studio-like editing capabilities. Covers installation, syntax highlighting for 11 built-in languages (C#, VB.NET, XML, HTML, Java, SQL, PowerShell, JavaScript), custom language configuration, code outlining, auto-completion, find/replace dialogs, file operations, export (XML/RTF/HTML), split views, and comprehensive event handling for building professional code editor applications.
Implement Syncfusion Windows Forms TreeMap control for hierarchical data visualization with nested rectangles. Use this when working with TreeMap controls, hierarchical data display, space-efficient charts, or color-coded visualizations. Covers TreeMap configuration, layout algorithms, color mapping, and customization for stock market visualizations and data categorization with rectangular layouts.
Create or revise evidence-backed technical tutorials, integration guides, deployment articles, engineering walkthroughs, and project documentation in Markdown. Use when the user asks for a technical blog post or tutorial that combines concepts, prerequisites, implementation, runnable commands, verification, troubleshooting, and sources. Do not use for a product-documentation suite or API-only reference.
New to MCP?
From what the protocol is to installing your first server, these answers cover most first questions.
An open protocol that defines how AI applications connect to external tools and data in a uniform way. Clients talk to the model; MCP servers provide tools, resources and prompt templates. They exchange standard messages, so one server can be reused by many clients.