Skills
98,639 packaged capabilities and playbooks for agents. Install any of them with one command.
Development
Implements Syncfusion .NET MAUI MarkdownViewer (SfMarkdownViewer) for rendering Markdown content with full formatting support. Use when displaying markdown files, documentation, release notes, or help content in MAUI apps. Covers markdown rendering, appearance customization, CSS styling, and content sources (string/file/URL/resource).
Migrates Syncfusion components from Xamarin.Forms to .NET MAUI. Use when migrating Xamarin.Forms applications to .NET MAUI, addressing namespace changes, API renames, property migrations, or breaking changes. Covers SfChart to SfCartesianChart migration, handler registration, NuGet package updates, and enum updates.
Implements Syncfusion .NET MAUI Radio Button (SfRadioButton) for mutually exclusive selection controls. Use when implementing radio buttons, selection controls with mutually exclusive options, or grouped radio buttons in .NET MAUI applications. Covers radio button state management, grouping mechanisms (GroupKey or SfRadioGroup), events, and visual customization.
Implements Syncfusion .NET MAUI Scheduler (SfScheduler). Use when creating scheduling applications, calendar views, appointment management, event planning, or resource scheduling in .NET MAUI. Covers scheduler views, appointment management, recurring events, timeline views, hierarchical resources, ICS import/export, quick info template, floating action button, adaptive UI, agenda layout mode, and month agenda view.
Implements Syncfusion .NET MAUI Shimmer (SfShimmer) loading placeholder effects. Use when implementing shimmer or skeleton loading animations, loading placeholders, or content loading indicators in .NET MAUI apps. Covers shimmer types (CirclePersona, Article, Feed, Shopping), custom shimmer views, wave animation, and customization.
Build voice-enabled AI applications with speech recognition, text-to-speech, and voice-based interactions. Supports multiple voice providers and real-time processing. Use when creating voice assistants, voice-controlled applications, audio interfaces, or hands-free AI systems.
Triage open issues and PRs in the current GitHub repo: find already-fixed, duplicate, and spam items; suggest labels; gauge demand from reactions and comments; then present a table of proposed actions and comments for confirmation before making any changes. Use when asked to triage, organize, clean up, or groom issues and PRs.
Emulated Sign in with Apple / Apple OIDC for local development and testing. Use when the user needs to test Apple sign-in locally, emulate Apple OIDC discovery, handle Apple token exchange, configure Apple OAuth clients, or work with Apple userinfo without hitting real Apple APIs. Triggers include "Apple OAuth", "emulate Apple", "mock Apple login", "test Apple sign-in", "Sign in with Apple", "Apple OIDC", "local Apple auth", or any task requiring a local Apple OAuth/OIDC provider.
Design and build complete web experiences from scratch—award-level product and marketing pages, cinematic scroll-directed sites where the page is directed like a film, and multi-screen products (app, dashboard, admin, settings, onboarding, docs site) built as one design system with every component, state, and route in one style. Use whenever the user wants to create or redesign a landing page, website, hero section, portfolio, promo or product page; wants scroll animations, storytelling pages, or a site that feels like a movie; or says “make it beautiful”, “make it wow”, “cinematic”, or “design system”—even if they name no technique. Generates its own assets via local CLIs (images, video frames, depth maps, 3D), and gates every ship with an executable anti-slop linter and a screenshot verification loop. Not for polishing a UI someone else built, and not for backend-only work.
Bootstrap agents for iOS, iPadOS, macOS, Swift, SwiftUI, SwiftData/Core Data, Swift Testing, Xcode build/test/debug, Simulator, App Intents, or XcodeBuildMCP work. Use before building, fixing, refactoring, QAing, or setting up Apple-platform repos, and when asked to load/install Ray's iOS skills or bootstrap iOS.
Maps and documents codebases of any size by orchestrating parallel subagents. Creates docs/CODEBASE_MAP.md with architecture, file purposes, dependencies, and navigation guides. Updates CLAUDE.md with a summary. Use when the user says "map this codebase", "cartographer", "/cartographer", "create codebase map", "document the architecture", "understand this codebase", or when onboarding to a new project. Automatically detects if map exists and updates only changed sections.
Map the load-bearing files, symbols, callers, and dependencies of an unfamiliar codebase before making changes. Use for architecture orientation, impact analysis, what-would-break questions, or finding callers. Uses CodeGraph when available and a dependency-free builtin fallback.
Provides guidance for writing and benchmarking optimized CUDA kernels for NVIDIA GPUs (H100, A100, T4) targeting HuggingFace diffusers and transformers libraries. Kernels must be kernel-builder/ABI3-compliant: no pybind11, no setup.py, TORCH_LIBRARY_EXPAND bindings only. Supports models like LTX-Video, Stable Diffusion, LLaMA, Mistral, and Qwen. Includes integration with HuggingFace Kernels Hub (get_kernel) for loading pre-compiled kernels. Includes benchmarking scripts to compare kernel performance against baseline implementations.
Drizzle ORM targeting SQLite (better-sqlite3, libsql/Turso, bun:sqlite, Cloudflare D1, expo-sqlite, op-sqlite). Covers schema definition (column modes, primary keys, foreign keys, indexes), drizzle-kit migrations (generate vs push, renames, custom SQL), the query builder (selects, upserts, returning, EXPLAIN), the relational query builder (relations(), `with`, partial columns), transactions and `db.batch()`, prepared statements with `sql.placeholder()`, connection pragmas (WAL, foreign_keys, busy_timeout), and Drizzle type inference (`$inferSelect`, `$inferInsert`, `$type<>`, drizzle-zod). Use when writing, reviewing, or refactoring Drizzle code for SQLite. Trigger even if the user doesn't say "performance" — schema/migration choices made now are expensive to reverse later, and SQLite-specific traps (single-writer model, no native booleans/dates, ALTER TABLE limits, FK pragma off by default) catch teams who reach for Drizzle without reading the SQLite docs.
Functional programming patterns with immutable data. Use when writing logic, data transformations, or encountering mutation bugs — including any feature request that builds, merges, filters, sorts, prices or otherwise reshapes records, lists, carts, orders or invoices, even when it never mentions immutability; load it alongside tdd for such changes, not instead of it. Covers immutability violations catalog, pure functions, composition, early returns, and options objects. Also use when composing Effect programs or reviewing Effect runtime boundaries in a project that already uses Effect. Do NOT over-apply heavy FP abstractions (monads, fp-ts) unless the project requires them.
Expert knowledge for Microsoft Foundry Local (aka Azure AI Foundry Local) development including best practices, decision making, configuration, and integrations & coding patterns. Use when compiling HF models with Olive, using Foundry Local CLI, embeddings/chat/audio APIs, or OpenAI-style integrations, and other Microsoft Foundry Local related development tasks. Not for Microsoft Foundry (use microsoft-foundry), Microsoft Foundry Classic (use microsoft-foundry-classic), Azure Local (use azure-local), Azure Content Understanding in Foundry Tools (use azure-content-understanding).
Migrates apps from @coinbase/onchainkit to standalone wagmi/viem components. Handles provider replacement (OnchainKitProvider to WagmiProvider), wallet component replacement (Wallet/ConnectWallet to custom WalletConnect), and transaction component replacement. Use when the user says “migrate my onchainkit,” “replace onchainkit provider,” “migrate my wallet component,” “replace my onchainkit wallet,” “migrate my transaction component,” “remove onchainkit dependency,” or “move off onchainkit.”
Ground-truth reference for building integrations on the Opencals hosted booking API with @opencals/storefront-sdk. Use whenever you are writing, reviewing or debugging code that talks to Opencals — availability, carts, appointments, checkout/payments, customer accounts (self-service), guests and attendees, custom durations, discounts (automatic / codes / balance credit), rescheduling and cancellation, addresses and marketing consent, or when you hit 429s / rate limits. Works alongside the `opencals-build-booking-site` skill (which scaffolds a whole site) but applies to ANY stack: a template, a from-scratch app, an embed on an existing site, or a v0/Lovable/Bolt build.
Use this skill when the user reports a Phaser 4 bug, black screen, missing sprite, failed collision, broken physics, animation issue, crash, console error, performance problem, slow game, save/load issue, mobile runtime issue, or unexpected gameplay behavior.
This skill should be used when the user asks to "add health bar", "create menu", "UI elements", "dialog box", "inventory system", "create buttons", "HUD overlay", "score display", "minimap", "progress bar", "bitmap text", "interactive button", or "UI layout".
Coordinate multiple DeepSeek Harness plugin Skills across inspection, migration, runtime debugging, heavy dependencies, testing, naming, and release. Use for a guided lifecycle workflow, a pre-run capability menu, or several DSH plugin operations with one status report. Preserve the user's selected scope and existing authorization across stages
Provides comprehensive guidance for Spring Boot development, including project creation, auto-configuration, dependency injection, web development, data access, security, testing, and deployment. Use when the user asks about Spring Boot, needs to create Spring Boot applications, configure Spring Boot, or implement Spring Boot features.
Implements the Syncfusion .NET MAUI DateTime Range Slider (SfDateTimeRangeSlider) control. Use when implementing range sliders, date range pickers, time range selectors, dual-thumb sliders, or interactive range selection controls in .NET MAUI applications. This skill covers installation, configuration, track styling, labels, ticks, dividers, tooltips, thumb customization, and the Liquid Glass Effect.
Implements Syncfusion® .NET MAUI DockLayout (SfDockLayout) for arranging and docking child elements in defined areas. Use this for creating docking layouts, positioning UI elements at edges (top/bottom/left/right), building dashboard layouts, or arranging multi-region interfaces. Covers dock positioning, edge positioning, and spacing between docked elements.
Implements and customize Syncfusion .NET MAUI ImageEditor (SfImageEditor) for editing, annotating, and transforming images. Use when working with MAUI image editing, photo editing, image cropping, or image transformations. Covers shape/text overlays, freehand drawing, image filters, toolbar customization, and saving edited images.
Implements Syncfusion .NET MAUI Segmented Control (SfSegmentedControl). Use when working with segmented controls, segment buttons, tab-like selection, button groups, or filter buttons in MAUI applications. This skill covers installation, item population, selection indicators, appearance customization, layout configuration, disabled segments, and events.
Implements Syncfusion .NET MAUI Slider (SfSlider) control. Use when working with sliders, numeric value selection, or interactive value controls. This skill covers installation, track configuration, labels with formatting, ticks and dividers, tooltips, thumb customization, discrete selection with StepSize, deferred updates, and LiquidGlass effect.
Implement and customize Syncfusion® .NET MAUI TreeView (SfTreeView) for displaying hierarchical data structures. Use when working with TreeView, hierarchical data display, tree structures, organizational charts, nested data, expand/collapse nodes, file explorer UI, folder structures, parent-child relationships, or multi-level data visualization in .NET MAUI applications.
Receive and respond to inbound messages and track outbound delivery status via Twilio webhooks across SMS, MMS, WhatsApp, and RCS. Covers webhook request parameters, replying with TwiML, validating webhook signatures for security, and handling status callbacks. Use this skill whenever an agent needs to handle incoming messages on any channel or track outbound message delivery in real time.
Use when you need to generate a checklist document with an embedded commands inventory, following the embedded template exactly and producing INVENTORY-COMMANDS-JAVA.md in the project root. This should trigger for requests such as Create embedded commands inventory checklist; Generate INVENTORY-COMMANDS-JAVA.md; Use @001-commands-inventory; Inventory embedded Java project commands; List command files bundled for Java agents. Part of Plinth Toolkit
Vercel AI Elements for workflow UI components. Use when building chat interfaces, displaying tool execution, showing reasoning/thinking, or creating job queues. Triggers on ai-elements, Queue, Confirmation, Tool, Reasoning, Shimmer, Loader, Message, Conversation, PromptInput.
Implement speech-to-text (ASR/automatic speech recognition) capabilities using the z-ai-web-dev-sdk. Use this skill when the user needs to transcribe audio files, convert speech to text, build voice input features, or process audio recordings. Supports base64 encoded audio files and returns accurate text transcriptions
Use when adding snippet support to a CloudCannon site, configuring MDX components (Astro, Next.js), Hugo or Eleventy shortcodes and includes for the Content Editor, debugging snippet round-trip issues, or setting up inline HTML snippets in Markdown content.
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.