Skills
98,639 packaged capabilities and playbooks for agents. Install any of them with one command.
Development
Find feature flags that were soft-deleted in the active project within a recent time window. Use when the user asks "what flags were deleted in the last N days", "show me recently deleted feature flags", "who deleted flag X", "audit recent flag deletions", or anything similar. Handles the non-obvious gotcha that system.feature_flags exposes the deleted boolean but does not expose a deletion timestamp — the actual deleted-at time lives in the per-flag activity log and must be cross-referenced.
Load this skill whenever the project contains forms, inputs, selects, checkboxes, radio buttons, text areas, or any validation flow. Under no circumstances create a form without visible labels, error identification, and keyboard accessibility. Absolutely always associate every input with a label and provide clear, accessible error messages
Address review and issue comments on the open GitHub PR for the current branch using gh CLI. Use when user says "address PR comments", "fix review feedback", "respond to PR review", or "handle PR comments". Verifies gh auth first and prompts to authenticate if not logged in. Do NOT use for creating PRs, CI debugging (use gh-fix-ci), or general Git operations
HTTP/REST API design for Go services: handlers, ServeMux routing, middleware, request validation, pagination, idempotency, health checks, error responses, and graceful shutdown. Use when designing APIs, writing HTTP handlers, implementing middleware, or structuring REST endpoints. Trigger examples: "design API", "REST endpoints", "HTTP handler", "middleware pattern", "graceful shutdown", "API versioning". Not for: gRPC services (go-grpc), spec-first OpenAPI work (go-openapi), general architecture (go-architecture-review), or concurrency in handlers (go-concurrency-review).
Implement GraphRAG combining knowledge graphs with RAG for multi-hop reasoning. Use this skill when building knowledge graph RAG, implementing multi-hop queries, using Neo4j with RAG, or connecting entities across documents. Activate when: GraphRAG, knowledge graph, multi-hop reasoning, Neo4j RAG, entity extraction, relationship queries, graph database, connected data.
Guide for exposing PostHog product endpoints as MCP tools. Use when creating new or updating API endpoints, adding MCP tool definitions, scaffolding YAML configs, or writing serializers with good descriptions. Covers the full pipeline from Django serializer to generated TypeScript tool handler.
Use when configuring any n8n node: HTTP, webhooks, databases, communications (Slack/Gmail/Discord), AI, triggers, Merge, and more. Triggers on any node-builder call (`node(...)`, `trigger(...)`, `tool(...)`, `memory(...)`, `languageModel(...)`, `ifElse(...)`, `merge(...)`, etc.), configuring a parameter, `useDataOfInput`, `numberOfInputs`, fan-in convergence, or node-specific debugging
This skill should be used when the user asks to "mobile game", "responsive game", "touch controls", "deploy to phone", "Capacitor", "PWA game", "scale manager", "orientation", "iOS game", "Android game", "full screen game", "mobile performance", etc.
Use this skill when users express a desire to develop a product, application, tool, or any software project. Gather requirements through in-depth conversation, using straightforward follow-up questions to help users clarify their thinking, then generate a Product Spec document (.md file) ready for Google AI Studio Builder.
Refine.dev headless React framework for CRUD apps: data providers, resources, routing, authentication, hooks, and forms. Use when building admin panels, dashboards, or internal tools with React and various backends (REST, GraphQL, Supabase, Strapi), or configuring Refine data providers and authentication. Keywords: Refine, CRUD, admin panel, data provider, React.
Implements Syncfusion .NET MAUI Color Picker (SfColorPicker). Use when implementing color picker functionality, color selection UI, palette mode, spectrum mode, or alpha slider configuration in .NET MAUI applications. Covers inline rendering, popup customization, color changed events, localization, and liquid glass effect.
Implements Syncfusion® .NET MAUI Linear Gauge (SfLinearGauge) for data visualization with scales, pointers, and ranges. Use when creating linear gauges, displaying measurements on linear scales, showing progress indicators, or building thermometer-style visualizations. Covers gauge pointer configuration, bar pointers or shape markers, draggable gauge pointers, and animated gauge transitions.
Implements Syncfusion .NET MAUI Radial Menu (SfRadialMenu) - a hierarchical circular menu optimized for touch. Use when working with radial menus, circular menus, context menus, touch-optimized menus, or hierarchical circular navigation. Covers floating menus, drag-enabled menus, nested circular menus, and custom segmented layouts in .NET MAUI applications.
Implements the Syncfusion .NET MAUI Range Selector (SfRangeSelector) component. Use when working with range selection with embedded charts, numeric range input, RangeStart/RangeEnd, track customization, or thumb styling in .NET MAUI. Covers tooltip configuration, label formatting, ticks/dividers, selection modes, events, and embedding SfCartesianChart inside a range control.
Implements Syncfusion .NET MAUI Rotator (SfRotator) control for displaying image carousels, slideshows, or rotating content. Use this for image galleries, product showcases, testimonial sliders, banner rotators, or scenarios requiring automatic or manual navigation through visual content.
Implements Syncfusion .NET MAUI AI-Powered Scheduler (SfSmartScheduler). Use when implementing natural language appointment scheduling, AI-powered scheduling, AI-powered control handling (date navigation, view switching), resource-aware booking, or conflict detection in MAUI apps. Covers AI scheduling, natural language CRUD operations, AI navigation, resource booking, and appointment summarization.
Implements Syncfusion® .NET MAUI StepProgressBar (SfStepProgressBar) control. Use when implementing step progress visualization, multi-step process tracking, or sequential progress indication. This skill covers step appearance customization, step states (completed/in-progress/not-started), orientation options, tooltips, and accessibility for order tracking, registration forms, or checkout processes.
Implements Syncfusion .NET MAUI Toolbar (SfToolbar) for navigation bars and command bars. Use when working with toolbars, toolbar items, navigation bars, toolbar buttons, or action toolbars in .NET MAUI applications. This skill covers toolbar item configuration, icons, text, overflow behavior, orientation, selection modes, and toolbar customization.
Tailwind CSS debugging and troubleshooting for common issues. PROACTIVELY activate for: (1) classes not applying or no styles in the browser, (2) JIT mode not picking up dynamic class names (string concatenation), (3) v3-to-v4 migration errors, (4) PostCSS configuration issues, (5) IntelliSense not autocompleting in VS Code, (6) production builds missing classes (purge/content config), (7) CSS variable conflicts, (8) specificity issues with @layer, (9) prefix conflicts with other CSS frameworks, (10) HMR not updating styles. Provides: a troubleshooting decision tree, dynamic-class allowlist patterns, content-config templates, IntelliSense setup, and PostCSS debugging steps.
TanStack Form v1 headless form state management for React. Covers field validation (sync/async, debouncing), form submission, array fields, linked fields, form composition patterns, and Standard Schema integration (Zod, Valibot, ArkType, Yup). Use when building forms with complex validation, implementing reusable form components, handling dynamic field lists, managing form state, or integrating validation libraries.
Practical guide to reduce token consumption and lower AI costs for both Claude Code users and developers calling the Anthropic API directly. Covers file organization, context management, strategic model selection, prompt caching, Batch API, effort tuning, and prompt architecture. Backed by real experiment data. Use when user mentions "optimize tokens", "reduce costs", "Claude is slow", "too many tokens", "token budget", "context window full", "organize codebase for AI", "reduce token consumption", "prompt caching", "cache_control", "batch API", "cache broken", "API costs", or "thinking budget". Do NOT use for general coding questions, debugging, or performance optimization unrelated to AI token usage.
UI/UX design reference database. 50+ styles, 21 palettes, 50 font pairings, 20 charts, 8 stacks (React, Next.js, Vue, Svelte, SwiftUI, React Native, Flutter, Tailwind). Actions: plan, build, create, design, implement, review, fix, improve, optimize, enhance, refactor, check UI/UX code. Projects: website, landing page, dashboard, admin panel, e-commerce, SaaS, portfolio, blog, mobile app, .html, .tsx, .vue, .svelte. Elements: button, modal, navbar, sidebar, card, table, form, chart. Styles: glassmorphism, claymorphism, minimalism, brutalism, neumorphism, bento grid, dark mode, responsive, skeuomorphism, flat design. Topics: color palette, accessibility, animation, layout, typography, font pairing, spacing, hover, shadow, gradient.
Assesses and rates quality 0-10 across multiple dimensions (correctness, maintainability, security, performance, testability, simplicity) with pros/cons analysis. Compares against project conventions and prior decisions from memory. Produces structured evaluation reports with actionable improvement suggestions. Use when evaluating code, designs, architectures, or comparing alternative approaches
Составляет однозначный план реализации без написания кода. Используй, когда пользователь явно просит составить, подготовить или расписать план реализации, внедрения либо исправления. Не используй, когда пользователь хочет обсудить варианты и ещё не выбрал решение, просит зафиксировать только желаемый результат без шагов, сразу реализовать задачу или провести ревью изменений.
Use when AI-written code needs structural cleanup or when implementing a change under a guard against AI coding slop — duplicated reimplementations of existing helpers, try-import fallbacks, broad exception swallowing, speculative abstraction layers, _v2 copies, dead "for future use" code, narrating comments — including requests to "deslop", "remove AI slop", "humanize code", review an AI-generated PR beyond tests passing, or prevent these patterns in the current change.
Shared vocabulary for designing deep modules. Use when the user wants to design or improve a module's interface, find deepening opportunities, decide where a seam goes, make code more testable or AI-navigable, or when another skill needs the deep-module vocabulary.
This skill should be used when implementing Convex mutation functions. It provides comprehensive guidelines for defining, registering, calling, and scheduling mutations, including database operations, transactions, and scheduled job patterns.
Implement Cross-Site Request Forgery (CSRF) protection for API routes. Use this skill when you need to protect POST/PUT/DELETE endpoints, implement token validation, prevent cross-site attacks, or secure form submissions. Triggers include "CSRF", "cross-site request forgery", "protect form", "token validation", "withCsrf", "CSRF token", "session fixation".
Isomorphic-by-default principle, environment boundary functions (createServerFn, createServerOnlyFn, createClientOnlyFn, createIsomorphicFn), ClientOnly component, useHydrated hook, import protection, dead code elimination, environment variable safety (VITE_ prefix, process.env)
Official @dodopayments/* framework adapters that mount Checkout, CustomerPortal, and Webhooks route handlers. Use when integrating Dodo Payments into Next.js, Express, Fastify, Hono, Astro, Remix, SvelteKit, Nuxt, TanStack, Bun, or Convex, such as @dodopayments/nextjs; use domain skills for payment and subscription logic
Expert-level toolkit for modular Godot 4.7+ CLI automation and headless build orchestration. Use when you need to: (1) Build complex scene trees or UI layouts programmatically, (2) Automate expert 3D asset pipelines (glTF -> Collision), (3) Optimize procedural geometry headlessly (CSG -> Static Mesh), or (4) Engineer production-grade CI/CD pipelines. Set GODOT_PATH env var for custom engine location. Keywords: Godot CLI, headless, CI, export, builder, 4.7.
Build React Native and Expo UIs with PanelUI — adding components, theming, composing overlays and forms, and debugging why something is unstyled. Applies when working in an Expo or React Native project that has panelui-native installed or a panelui.json, when the user mentions PanelUI, or when they ask for a bottom sheet, dialog, chart, chat transcript, form or any other screen UI in React Native.
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.