Skills
98,067 packaged capabilities and playbooks for agents. Install any of them with one command.
Development
Builds, fixes, styles, and composes UI with the Gravity UI design system — the React ecosystem of @gravity-ui/* packages (uikit, charts, table, navigation, date-components, icons, and more). Routes to the correct package when look-alikes exist, applies theming and required setup, and prevents invented component APIs. Applies when working with @gravity-ui imports, uikit, ThemeProvider, --g- CSS tokens, or any prompt (EN or RU) mentioning gravity-ui, гравити, дизайн-система, компоненты, дашборд, таблица, график, or форма.
Detect potential code-level performance smells in Java — streams, collections, boxing, regex, object creation. Provides awareness, not absolutes — always measure before optimizing. For JPA/database performance, use jpa-patterns instead.
MANDATORY SKILL for Tencent RTC (Real-Time Communication) product integration. 【TRIGGER KEYWORDS - Must load this skill when user mentions ANY of these】: - Products: TUIKit, TUIRoomKit, TUICallKit, TUILiveKit, TUIChatKit, RoomKit, CallKit, LiveKit, ChatKit - Brands: TRTC, Tencent RTC, Tencent Cloud, Tencent Real-Time Audio/Video, Tencent IM - Features: video conference, video call, voice call, live streaming, chat, instant messaging, IM, meeting, call, co-host, barrage, gift, host, audience, audio/video, real-time communication - Integration: integrate RoomKit, integrate CallKit, integrate LiveKit, integrate TUIKit, integrate audio/video, in-meeting chat, screen sharing This skill provides intelligent product recommendation and guides integration workflow.
VHS terminal recording best practices from Charmbracelet (formerly charmbracelet-vhs). This skill should be used when writing, reviewing, or editing VHS tape files to create professional terminal GIFs and videos. Triggers on tasks involving .tape files, VHS configuration, terminal recording, demo creation, or CLI documentation
Write PRD — Product Requirements Documents with structured 8-section templates, user stories, acceptance criteria, and value proposition validation. Use when writing PRDs, defining product requirements, creating user stories with INVEST criteria, or building go/no-go decision frameworks.
Writing release note articles for tldraw SDK releases. Use when creating new release documentation, drafting release notes from scratch, or reviewing release note quality. Provides guidance on structure, voice, and content for release files in `apps/docs/content/releases/`.
For contributors to angular-best-practices. Reviews and audits rule files for accuracy, validity, and formatting compliance. Not for Angular application development — install angular-best-practices instead.
Store and transform images with Cloudflare Images API and transformations. Use when: uploading images, implementing direct creator uploads, creating variants, generating signed URLs, optimizing formats (WebP/AVIF), transforming via Workers, or debugging CORS, multipart, AVIF limits, metadata stripping, cache issues, or error codes 9401-9413.
Build MCP servers on Cloudflare Workers—the only platform with official remote MCP support. TypeScript-based, with OAuth, Durable Objects, and WebSocket hibernation. Prevents 24 documented errors. Use when deploying remote MCP servers, implementing OAuth, or troubleshooting URL path mismatches, McpAgent exports, CORS issues, or IoContext timeouts.
Write and run Contentful content model migration scripts using the contentful-migration library and the Contentful CLI. Covers creating, editing, and deleting content types and fields, validations, editor interface configuration, editor layouts, sidebar widgets, entry transformations, tags, annotations, and the migration context object. Use when asked to write a migration, create or add a content type, add, rename, or delete fields, change or update a content model, transform entries, derive linked entries, configure editor controls, or run a migration script. Also triggers on "migration script", "contentful-migration", "schema migration", "content model migration", "field validation", "editor interface", "editor layout", "sidebar widget", "moveField", "changeFieldId", "rich text field", "reference field", "link field". Not for SDK client setup or Next.js integration (contentful-nextjs). Not for Contentful terminology or API routing (contentful-guide).
Analyzes your recent Claude Code chat history to identify coding patterns, development gaps, and areas for improvement, curates relevant learning resources from HackerNews, and automatically sends a personalized growth report to your Slack DMs
Find working Deepgram integration examples with third-party platforms and frameworks. Use whenever someone wants to integrate Deepgram with Twilio, LiveKit, LangChain, Vercel AI SDK, Discord, Vonage, Pipecat, Expo, FastAPI, Cloudflare Workers, Slack, Telegram, LlamaIndex, Zoom, Next.js, Nuxt, Django, SvelteKit, NestJS, Spring Boot, CrewAI, Riverside, SignalWire, Telnyx, Plivo, Webex, Jitsi, Microsoft Teams, OBS Studio, Haystack, Semantic Kernel, Gin, and more. Examples are full runnable integration demos, not minimal feature snippets
Build document Q&A with Gemini File Search—a fully managed RAG system with automatic chunking, embeddings, and citations. Upload 100+ file formats and query using natural language. Use for document Q&A, searchable knowledge bases, and semantic search. Troubleshoot document immutability, storage quota (3x), chunking config, metadata limits (20 max), polling timeouts, displayName dropped (Blob uploads), grounding lost (JSON mode), and tool conflicts (googleSearch + fileSearch).
Audit and fix Three.js and React Three Fiber apps for frame-loop performance, GPU memory leaks, scene-graph correctness, and visual defects like z-fighting, shadow acne, wrong color space, and broken resize handling. Uses React Doctor as the scanning engine plus a visual rubric checked against rendered output. Use when the user asks to improve, audit, scan, or clean up a Three.js, R3F, react-three-fiber, drei, or WebGL app, or types `/improve-threejs`.
Review localized UI, translations, message catalogs, and pull requests for ICU syntax, placeholder integrity, glossary compliance, locale-aware formatting, accessibility, and translation readiness. Use for explicit localization reviews or changed user-facing text; report evidence-backed findings without modifying files or external systems.
Low-power embedded skill for sleep modes and energy optimization. Use when configuring MCU sleep/stop/standby, peripheral clock gating, wake-up sources, or measuring firmware current draw. Activates on queries about WFI, STOP mode, STM32 PWR, nRF sleep, wake-up EXTI, or reducing embedded power consumption.
Use this skill when the user asks to “create a plugin,” “scaffold a plugin,” “understand plugin structure,” “organize plugin components,” “set up plugin.json,” “use ${CLAUDE_PLUGIN_ROOT},” “add commands/agents/skills/hooks,” “configure auto-discovery,” or needs guidance on plugin directory layout, manifest configuration, component organization, file naming conventions, or Claude Code plugin architecture best practices.
QEMU embedded simulation skill for bare-metal MCU testing. Use when running ARM/RISC-V firmware in QEMU, selecting machine models, loading -kernel ELF, or GDB debugging without hardware. Activates on queries about QEMU bare metal, qemu-system-arm -kernel, STM32 QEMU machine, RISC-V virt, or firmware simulation.
Implementar e revisar Tailwind CSS com tokens, variantes, responsividade, dark mode, container queries e CSS sustentável. Use quando houver tailwindcss ou utilitários Tailwind em templates; confirme a versão porque configuração e diretivas diferem entre gerações.
Implement Syncfusion Angular Chart component for professional data visualization. Use this when creating or customizing charts such as line, bar, column, area, pie, financial (candlestick, OHLC), scatter, bubble, or stock charts. Supports axes configuration, series binding, legends, tooltips, zooming, real-time updates, technical indicators, themes, export, and accessibility features.
Bare-metal UART skill for serial console and debug. Use when configuring baud rate, polling or IRQ-driven TX/RX, or integrating DMA with UART. Activates on queries about UART bare-metal, baud BRR, serial printf, or USART interrupt.
Use when building or reviewing core Quarkus applications with CDI beans and scopes, SmallRye Config and profiles, lifecycle, interceptors and events, virtual threads, and test-friendly design. This should trigger for requests such as Review Java code for Quarkus application structure and CDI; Apply best practices for Quarkus configuration and beans; Improve CDI interceptors, events, or programmatic injection in Quarkus; Add virtual-thread configuration or tune CDI lifecycle. ; Review Quarkus CDI bean lifecycle and configuration. Part of Plinth Toolkit
Microsoft Entra ID (Azure AD) authentication for React SPAs with MSAL.js and Cloudflare Workers JWT validation using jose library. Full-stack pattern with Authorization Code Flow + PKCE. Prevents 8 documented errors. Use when: implementing Microsoft SSO, troubleshooting AADSTS50058 loops, AADSTS700084 refresh token errors, React Router redirects, setActiveAccount re-render issues, or validating Entra ID tokens in Workers.
Iterates one-by-one through a multi-bug report with a hard confirmation gate before any code touches disk. Use this skill when the user has a report of 2+ bugs and wants to work through them sequentially. Trigger phrases: "let's tackle these", "let's iterate", "go one by one", "loop through the findings", "work through the bugs", "bug iteration", or any time the user presents a numbered list of bugs and signals they want to resolve them in order. Do NOT trigger for a single bug (just investigate and fix) or when the user wants a fresh debug pass (use a dedicated debug/investigation pass for that).
CUDA debugging skill for GPU program correctness. Use when debugging with cuda-gdb, running NVIDIA Compute Sanitizer memcheck/racecheck, analyzing GPU core dumps, or interpreting CUDA error codes 700/702. Activates on queries about cuda-gdb, compute-sanitizer, illegal memory access, launch timeout, or device printf.
Bare-metal DMA skill for memory-peripheral transfers. Use when configuring DMA channels, circular mode, double buffering, or DMA IRQ completion. Activates on queries about DMA bare-metal, circular buffer, memory-to-peripheral, or DMA stream configuration.
Expert architectural standards for scalable Godot Apps, Tools, EditorPlugins, and Control-heavy UIs using Composition (Has-A Orchestrator + components). Use when building dashboards, tool windows, forms, settings panels, or EditorPlugin UIs. Do NOT use for gameplay entities (Player/Enemy/Weapon/Hitbox) — route those to godot-composition. Trigger keywords: Control, EditorPlugin, tool UI, Orchestrator, VLS, rock test, AuthComponent, ThemeManager, Saveable component, dependency injection.
Retrieve detailed metadata and stored content for individual OpenRouter generations. Use when the user wants to inspect a specific request — its cost, latency, token usage, provider routing, or the actual prompt/completion text — or is debugging a failed or unexpected generation.
Suite of tools for creating elaborate, multi-component claude.ai HTML artifacts using modern frontend web technologies (React, Tailwind CSS, shadcn/ui). Use for complex artifacts requiring state management, routing, or shadcn/ui components—not for simple single-file HTML/JSX artifacts.
Reference for the bitbottle CLI — a gh-style tool for Bitbucket Server/DC and Cloud. Load when the user asks about bitbottle commands, auth setup, PRs, repos, branches, tags, commits, pipelines, or why a command failed. Load even if the user just says "bitbottle", mentions "Bitbucket", or pastes a bitbottle error message.
Expert guidance for building and extending CAP (Cloud Application Programming Model) applications in either Node.js or Java. Covers project initialization, CDS modeling, declarative annotations, and custom handler best practices for both runtimes. Use when building a new CAP app, extending an existing one, or reviewing CAP code for correctness and idioms — regardless of whether the stack is Node.js or Java.
Build AI agents with Cloudflare Agents SDK on Workers + Durable Objects. Provides WebSockets, state persistence, scheduling, and multi-agent coordination. Prevents 23 documented errors. Use when building WebSocket agents, RAG with Vectorize, MCP servers, or troubleshooting "Agent class must extend", "new_sqlite_classes", binding errors, or WebSocket payload limits.
Build semantic search with Cloudflare Vectorize V2. Covers async mutations, 5M vectors/index, 31ms latency, returnMetadata enum changes, and V1 deprecation. Prevents 14 errors, including dimension mismatches, TypeScript types, and testing setup. Use when building RAG or semantic search, or troubleshooting returnMetadata, V2 timing, metadata index, dimension errors, vitest setup, or wrangler --json output.
Compiler frontend skill for lexing, parsing, and type checking. Use when building a lexer/parser, designing AST nodes, implementing symbol tables, type checking, error recovery, or emitting LLVM IR. Activates on queries about lexer, Pratt parser, recursive descent, AST, symbol table, Hindley-Milner, or llvm-sys.
Expert in event sourcing, CQRS, and event-driven architecture patterns. Masters event store design, projection building, saga orchestration, and eventual consistency patterns. Use proactively for event-sourced systems, audit trail requirements, or complex domain modeling with temporal queries
Expert blueprint for visual novels (Doki Doki Literature Club, Phoenix Wright, Steins;Gate) focusing on branching narratives, dialogue systems, choice consequences, rollback mechanics, and persistent flags. Use when building story-driven, choice-based, or dating sim games. Keywords visual novel, dialogue system, branching narrative, typewriter effect, rollback, bbcode, RichTextLabel.
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.