Skills
97,725 packaged capabilities and playbooks for agents. Install any of them with one command.
Development
Release a native macOS app to GitHub with DMG packaging and Sparkle appcast updates. Use this skill whenever the user wants to publish a new version, create a release, ship an update, push a release to GitHub, or update the appcast. Also trigger when the user mentions DMG creation, Sparkle signing, notarization, archiving, or anything related to distributing a new version of their macOS app. This covers the full release pipeline: archive, notarize, export, create DMG, sign with Sparkle EdDSA, update appcast.xml, git push, and GitHub release creation.
Persistence and cross-server data - DataStoreService (UpdateAsync, retries, budgets, limits), session locking with ProfileStore, schema migrations, OrderedDataStore leaderboards, MemoryStore queues/sorted maps/hash maps, MessagingService, right-to-be-forgotten. Use when saving player data, building leaderboards or queues, or fixing data loss, duplication, or throttling.
Guide AI agents through TypeScript coding best practices including type safety, error handling, code organization, and architecture patterns. This skill should be used when generating TypeScript code, reviewing TypeScript files, creating new TypeScript modules, refactoring JavaScript to TypeScript, or when the user asks about TypeScript patterns, types, or coding standards. Keywords: typescript, types, coding standards, best practices, type safety, generics, architecture, refactoring.
Datadog Browser SDK — RUM, Logs, Session Replay, profiling, product analytics, and error tracking setup, configuration, and migration. Use when upgrading Browser SDK versions, setting up RUM or Logs, or troubleshooting browser-side Datadog instrumentation.
Render a 3D canvas sharply on Retina and HiDPI displays, including explicit 200 percent resolution, synchronized renderer and post-processing sizes, correct pointer coordinates, and measured quality fallbacks. Use for blurry WebGL output, 2x rendering, high-resolution previews, and display-density changes.
Use when writing, reviewing, or refactoring Luau code for Roblox — modules, services, controllers, error handling (pcall), memory leaks and connection cleanup, server-authoritative security, input validation, naming conventions, or project organization. Triggers include "best practices", "clean code", "code review", "refactor", "memory leak", "server authority".
Use when you need to act as an Elite Software Architect (Maestro) to manage complex repositories. It enforces a "Why over How" philosophy, maintains a persistent project memory (Brain), and orchestrates specialized sub-skills through a Plan-Act-Verify lifecycle.
Add Arcjet security protection to HTTP routes, AI agent tool calls, MCP servers, background jobs, and queue workers. Covers rate limiting, bot detection, email validation, prompt injection, sensitive information blocking (including Rampart NER), content moderation, capture/flush, remote Guard policies, typed inputs, and abuse prevention. Works in JavaScript/TypeScript, Python, and Go. HTTP frameworks share this skill. JS Guard adapters that ship on npm are per-adapter reference files loaded from Step 3 — do not keep the whole JS Guard reference in context. Official Python adapters (including Google ADK) have dedicated integrate-arcjet-guard skills, as do JS Cloudflare Think and Microsoft Agent Framework for Go. Use when the user wants security, rate limiting, bot protection, or abuse prevention – "protect my API," "rate limit tool calls," "block bots," "secure my endpoint," or "prevent abuse" – even without naming Arcjet.
Interactive LeetCode-style teacher for technical interview preparation. Generates coding playgrounds with real product challenges, teaches patterns and techniques, supports Python/TypeScript/Kotlin/Swift, and provides progressive difficulty training for data structures and algorithms.
Roblox project structure and client/server model - replication, where code and assets belong (ServerScriptService, ReplicatedStorage, StarterPlayer), RunContext, service/controller bootstrapping, player/character lifecycle, CollectionService components, attributes, streaming-safe client code, library choices. Use when starting a project, deciding where code goes, or fixing replication/streaming bugs.
Invokes the @sap-ux/create CLI — generate, add, convert, remove, update, change, list, get commands for SAP Fiori projects. Use when asked to run sap-ux, invoke create CLI, add config to a project, generate adaptation-project, or use any sap-ux/create subcommand. Full options for each command group are in the linked references.
Configure, migrate, or run ESLint with @sap-ux/eslint-plugin-fiori-tools in SAP Fiori projects (standalone or CAP). Use when ESLint is missing and the user wants to add it or add code quality checks; when an existing .eslintrc or eslint@8 config needs upgrading to ESLint 9 flat config; when the user wants to run linting, fix lint errors, or ESLint is broken or not working; or when the user wants to see the application issues or UX consistency issues for a specific app — e.g. "show application issue(s) for my project <project_name>", "show application issues for app X", "UX consistency issues", "issues consistent with Page Map", "same issues as Application Information".
Add gateable features to an existing browser game — skin picker, continue-after-death, bonus mode, save slots, daily challenge. Monetization-agnostic scaffolding that leaves clean hooks for any paywall, subscription, or entitlement layer. Features are scaffolded at silver and gold tiers only (bronze is the default everyone gets). Use when the user says "add gateables", "scaffold monetizable features", "add skin picker", "add continue-after-death", "make my game monetizable", or "add premium hooks". Do NOT use for Play.fun SDK integration (use monetize-game) or generic gameplay features (use add-feature).
Perform creator operations on the Bilibili Toy platform through Toy CLI (publish / update / preview / query / bind videos / troubleshoot). Triggers: Toy publish, publish Toy, toy create, upload Toy, Toy update, toy update, change Toy cover, change Toy password, Toy preview, submit Toy for review, my Toys, toy mylist, Toy list, Toy statistics, toy stats, Toy PV/UV, Toy login, toy login, Toy publishing history, toy history, toy cli, Toy blank screen, Toy 404, Toy page won't open, Toy resource path, Toy slug, bind video to Toy, bind video, unbind video, toy video, which videos are bound to Toy, add Toy entry to video page, toy video mine. Use this skill when the user needs to publish or update a local front-end project/HTML/zip to the Toy platform, view their Toys or traffic stats, bind or unbind videos to Toys, troubleshoot blank pages or resource 404s after publishing, or manage local publishing history.
Develops reactive Livewire 4 components. Activates when creating, updating, or modifying Livewire components; working with wire:model, wire:click, wire:loading, or any wire: directives; adding real-time updates, loading states, or reactivity; debugging component behavior; writing Livewire tests; or when the user mentions Livewire, component, counter, or reactive UI.
NgRx state management best practices for Angular. Covers pure reducers, action groups, entity adapter, selectors, and signal-based selection. Activates when working with @ngrx/store, @ngrx/effects, and @ngrx/entity. Do not use for Akita, NGXS, or standalone signal-based state. Install alongside angular-best-practices for full coverage.
React bindings for TanStack Router: RouterProvider, useRouter, useRouterState, useMatch, useMatches, useLocation, useSearch, useParams, useNavigate, useLoaderData, useLoaderDeps, useRouteContext, useBlocker, useCanGoBack, Link, Navigate, Outlet, CatchBoundary, ErrorComponent. React-specific patterns for hooks, providers, SSR hydration, and createLink with forwardRef.
Godot workflow for SpriteCook assets. Use when the user wants to turn SpriteCook spritesheet PNGs, animation assets, or character animation runs into Godot SpriteFrames resources and AnimatedSprite2D/AnimatedSprite3D animation nodes. Covers both manual spritesheet-to-Godot setup and the optional SpriteCook MCP Godot export endpoint.
Diagnose dotnet-msbuild binlog MCP startup failures. Use for: CONNECTION_CLOSED, binlog server won't connect, missing binlog tools, Microsoft.AITools.BinlogMcp not found, dnx launch errors. Checks workspace SDK, feeds, and source mapping without bypassing policy. Do not use for: errors inside a binlog (use binlog-failure-analysis), capturing binlogs (use binlog-generation), unrelated MCP servers.
Create or integrate highly detailed 3D models with smooth silhouettes, shaped surfaces, believable bevels, and close-up geometry, then prepare suitable runtime LODs and loading. Use when a user requests high polygon counts, ultra-realistic models, detailed architectural assets, or removal of visibly faceted geometry.
Build sharp, physically coherent high-resolution materials for 3D rendering with appropriate PBR maps, texel density, UV direction, mipmaps, anisotropic filtering, and progressive asset delivery. Use for detailed wood, stone, fabric, foliage, and architectural close-ups without excessive download or GPU memory costs.
Build, develop, and publish GitBook integrations — apps that run inside GitBook to add custom blocks, react to events, connect external services via OAuth, and extend the editor. Use this skill whenever a task involves the GitBook integrations platform: scaffolding an integration with the GitBook CLI (`gitbook new`), writing or editing an integration's code (`createIntegration`, `createComponent`, ContentKit TSX), configuring `gitbook-manifest.yaml` (scopes, blocks, configurations, secrets), building custom editor blocks or link unfurlers, handling GitBook events like `space_content_updated`, setting up an integration's OAuth flow, running `gitbook dev`, or publishing an integration (private/unlisted/public, marketplace submission). Trigger this even if the user just says they want to 'build an app for GitBook', 'add a custom block', or 'connect <some tool> to GitBook' without saying the word 'integration'.
Build a frontend with a deliberate visual direction held through palette, typography, structure, and texture, with on-screen strings that name real information rather than fabricated demo data or filler labels. Use when building or restyling a frontend.
Drive Roblox Studio from an AI agent via the built-in Studio MCP server - connecting Claude Code, Codex, Cursor, OpenCode, Gemini CLI; tools to explore the DataModel, read/edit scripts, run Luau in edit/server/client, playtest, read output, capture screenshots, simulate input, insert assets. Use when an agent should inspect, modify, or playtest an open Studio place, or to set up the connection.
Add sun shafts and crepuscular rays to a Three.js or equivalent 3D scene, using scene occlusion, a projected sun position, controlled foreground spill, and scalable post-processing. Use for rays of light from the sky, sunlight through trees or roofs, and golden-hour architectural scenes.
Technical leadership guidance for engineering teams, architecture decisions, and technology strategy. Includes tech debt analyzer, team scaling calculator, engineering metrics frameworks, technology evaluation tools, and ADR templates. Use when assessing technical debt, scaling engineering teams, evaluating technologies, making architecture decisions, establishing engineering metrics, or when user mentions CTO, tech debt, technical debt, team scaling, architecture decisions, technology evaluation, engineering metrics, DORA metrics, or technology strategy.
Implement, fix, refactor, review, migrate, or validate Flutter navigation and routing. Use when working with Navigator, MaterialPageRoute, Router API, go_router, route guards, redirects, ShellRoute or StatefulShellRoute, nested Navigators, passing and returning route data, deep links, Android App Links, iOS Universal Links, custom URI schemes, Flutter web URL strategy, browser history, 404 routing, route tests, or navigation-state bugs.
Inspect and debug Honcho workspaces via the `honcho` CLI. Use when investigating peer representations, memory state, session context, or dialectic quality — any task that requires introspection of a Honcho deployment, including verifying that a recall/record memory loop is actually working.
Guide for using react-native-unistyles v3. Triggers on: "unistyles", "StyleSheet.create", "create stylesheet", "add theme", "breakpoints", "variants", "withUnistyles", "useUnistyles", "ScopedTheme", "UnistylesRuntime", "style component", "responsive styles", "media queries", "dynamic styles", "scoped theme", "adaptive theme", "unistyles setup", "unistyles config", "withUnistylesConfig", "unistyles metro". Covers setup (Babel plugin or Metro integration), theming, responsive design, variants, web features, third-party integration, and troubleshooting.
Use when implementing client-server communication in Roblox, firing events between LocalScripts and Scripts, passing data across the network boundary, syncing game state, or defending against exploits that abuse RemoteEvents or RemoteFunctions.
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.