Skills
98,873 packaged capabilities and playbooks for agents. Install any of them with one command.
Development
Excel template filling skill based on Alibaba EasyExcel (com.alibaba:easyexcel:4.0.3). Covers simple object filling, list filling ({.}+forceNewRow), horizontal multi-column combination filling (FillWrapper+WriteDirectionEnum.HORIZONTAL), complex filling (with total rows/statistics rows, fill then write), Spring Boot integration, template design conventions, escape characters, differences between 03 and 07 formats, and performance optimization (batched fill, file caching). Use this skill when the user needs to fill Java objects or Map data into a pre-made .xlsx template (variable syntax {var}, {.}, {prefix.}) to generate reports (payslips/contracts/statements/invoices/financial statements/statistics tables/summary tables); not for "programmatically generating Excel" scenarios that don't use a template (use easyexcel-write instead).
Use when authoring or modifying a Datex Studio embed (configurationTypeId=20, *-embed.json suffix, CLI type `embed`) on a branch — an iframe-hosting component that renders an external URL or an in-memory HTML string in a dialog or inline panel. Owns the iframe-only rule (no srcdoc, no inline-HTML type), the `data:text/html` URI pattern for rendering an HTML string, the `$shell.open<name>Dialog` wiring (package-scoped when the embed lives in a module), and the in-iframe `window.print()` print pattern. Triggers: "create an embed", "render HTML in a dialog", "preview/print HTML", "embed a map/iframe", "show an external page in a dialog", "$embed iframe is blank", "print button does nothing in the preview".
Optimizing vector embeddings for RAG systems through model selection, chunking strategies, caching, and performance tuning. Use when building semantic search, RAG pipelines, or document retrieval systems that require cost-effective, high-quality embeddings.
Research and compare established libraries, open-source tools and applications, managed services, and standard, framework, or platform primitives against an explicit bespoke baseline before committing to a material generic mechanism. Use for library/tool recommendations, build-versus-adopt questions, custom-mechanism replacement, consequential unresolved dependencies, or due diligence on a named but newly introduced material dependency. Produces an evidence-backed adopt, adapt, combine, build, defer, or do-nothing proposal. For repository-wide opportunity discovery, use improve-codebase-architecture first and evaluate only the selected job. Not for agent-skill discovery, constraints still needing specification, trivial logic/glue, routine use of an adopted tool, or ordinary fixes.
Use when the user says 'figma to gutenberg', 'figma to blocks', or hands over a Figma frame to rebuild on a WordPress site that uses the block editor. Maps the Figma node tree to core Gutenberg blocks, registers the frame's palette in Global Styles, and writes to a draft, so nothing live is touched.
Use only when the user explicitly asks to fix and verify a validated or plausible security vulnerability. Do not use for ordinary bug fixes, correctness or design review findings, general validation, or full PR, commit, branch, patch, or repository scans.
Build interfaces using Microsoft's Fluent 2 design system via @fluentui/react-components (v9). Use when the user requests UI built with Fluent UI, Fluent 2, Microsoft design language, Teams-style UI, or Office-style interfaces. Covers: React component usage, theming with FluentProvider, styling with makeStyles/tokens/Griffel, design token application, layout patterns, typography, color system, accessibility, dark/light/high-contrast themes, and custom branding. Also triggers for: "make it look like Teams/Outlook/Office", "use Fluent", "Microsoft design system", "@fluentui", or any request to build UI that follows Microsoft's design language. Do NOT use for Fluent UI v8 (@fluentui/react) unless migrating to v9.
Build or review Flutter remote data and transport boundaries across HTTP, GraphQL, WebSocket, SSE, or Socket.IO. Use for API contracts, authenticated request transport, pagination, retries, reconnection, caching, and error mapping; route sign-in and session semantics to flutter-authentication and local storage ownership to flutter-persistence.
Design or review Flutter on-device persistence, caching, schema migrations, and offline synchronization. Use for preferences, files, local databases, cache lifecycle, or durable queues while preserving the existing package; route remote transport to flutter-networking and broad threat audits to flutter-security.
Implement or review Flutter platform channels, Pigeon APIs, FFI and build hooks, native plugin implementations, platform views, add-to-app boundaries, web interop, and native lifecycle integration. Use when Dart must communicate with native platforms; route reusable package APIs, federation, and publication readiness to flutter-package-development.
Best practices for modern Fortran (2003/2008+) scientific and numerical computing, covering modules, explicit interfaces, kind parameters, memory safety, and testing. Use when writing or reviewing Fortran source (.f90/.f95/.f03/.f08), defining modules and derived types, choosing numeric kind parameters, working with allocatable arrays, setting up a Fortran build with CMake or fpm, or writing unit tests for numerical code.
Create distinctive, production-grade frontend interfaces with high design quality. Use this skill when the user asks to build web components, pages, artifacts, posters, or applications (examples include websites, landing pages, dashboards, React components, HTML/CSS layouts, or when styling/beautifying any web UI). Generates creative, polished code and UI design that avoids generic AI aesthetics
Create distinctive, production-grade frontend interfaces with high design quality. Use this skill when the user asks to build web components, pages, artifacts, posters, or applications (examples include websites, landing pages, dashboards, React components, HTML/CSS layouts, or when styling/beautifying any web UI). Generates creative, polished code and UI design that avoids generic AI aesthetics
Builds playable homage games (original takes on well-known games, with original names and art) whose in-game captures must hold up side by side with real shipped-game screenshots. Orchestrates separate planner, builder, and critic subagents through a brief with locked reference shots, a plan, a playable loop, a staged art pipeline, and live captures, then runs fresh-critic rounds against a per-game Visual Bar until WIN, with a diagnoser for stuck loops and a final orchestrator visual read before handoff. Use when asked to build, polish, or compare homage games or vertical slices where visual quality next to real games matters, when a game plays fine but its screenshots look like a browser toy beside the references, or when a reviewer keeps soft-passing weak visuals. Not for general app scaffolds or gameplay-only prototypes.
Invoke for game jam participation -- 48-72 hour compressed development workflow. Triggers on: "game jam", "jam mode", "Ludum Dare", "GMTK Jam", "Global Game Jam", "Brackeys Jam", "48 hours", "jam submission". Do NOT invoke for normal development timelines (use game-start). Part of the AlterLab GameForge collection.
Run a game development post-mortem rooted in the GDC tradition. Triggers on: "retrospective", "retro", "post-mortem", "lessons learned", "what went right", "what went wrong", "kill list review". Do NOT invoke for design document review (use game-design-review) or playtesting (use game-playtest). Part of the AlterLab GameForge collection.
When the user wants to programmatically manage Google Business Profiles at scale via API, automate GBP updates, build GBP management tools, or integrate GBP data into their systems. Also use when the user mentions "GBP API", "Google Business Profile API", "bulk GBP management", "automate GBP", "GBP integration", or "programmatic GBP". For manual GBP optimization, see gbp-optimization. For multi-location strategy, see multi-location-seo.
Handles the Genie Editor host-side client integration workflow, including adjusting panel editable items, page-level attribute aggregation, multi-option design comparisons and option switching, and completing page resource context and locator information. Use when the user wants to make an element or page editable in the adjustment panel, organize editable items per page uniformly, produce multiple directions first and then switch to compare them, or fill in page locator information to quickly find the current page and its implementation during debugging.
Master advanced Git workflows—including rebasing, cherry-picking, bisect, worktrees, and reflog—to maintain clean history and recover from any situation. Use when managing complex Git histories, collaborating on feature branches, or troubleshooting repository issues.
Push a project to GitHub, automatically choosing between three modes: first push (large file scan → generate .gitignore → git init → create repo with gh → push), routine update (commit + push), and release (tag + create Release, optionally with downloadable files). The core principle is safety first: always scan for large and sensitive files before pushing, and ask rather than push anything that should not be pushed. Triggered when the user says "推到GitHub", "推送到GitHub", "git push", "上传到GitHub", "提交并推送", "发版本", "打release", "打tag", "/git-push". Not applicable to: deciding which features go into which version number (use issue-pool — this skill only tags an already-decided version number), complex git operations such as rebase/cherry-pick/conflict resolution/history rewriting/rollback (use git commands directly; this skill does not cover them), or self-testing and acceptance before the code is finished.
Use when a new Godot system or feature has open design decisions — interrogates them in batched rounds, scope first, each question with a recommended answer, and records the answers before any design or code. Triggers on "grill me", "ask me first", "question me on the design", "what do I need to decide before building". Not for choosing between nodes or APIs, and not for bug fixes.
Immediate trigger conditions: the user mentions "building a website with HAP", "HAP front-end project", "HAP as a database", "corporate website", "official website", "building via HAP", "making a website with HAP", "HAP website", "building an official website", "front-end/back-end separation", "content management system", "HAP front end", "HAP official website". Provides a complete guide to building a HAP + front-end project, including HAP back-office configuration, front-end project structure, API integration, and data rendering.
IHttpClientFactory patterns with Polly for retries, circuit breakers, timeouts, and resilient HTTP communication. Includes best practices for HTTP client configuration and error handling. Use when configuring resilient HTTP clients in ASP.NET Core, implementing retry policies with Polly, or setting up circuit breakers for external service calls.
Launch an automatic issue review with expert personas selected automatically, analyze feasibility, completeness, risks and architecture, then publish a structured report directly on the issue — all without user intervention. Use when the user wants an issue reviewed/analyzed before starting it, wants to assess its feasibility, completeness, risks or architecture, or mentions "issue review" / "revue d'issue".
Comprehensive code reviewer for Java and Python implementations focusing on correctness, efficiency, code quality, and algorithmic optimization. Reviews LeetCode solutions, data structures, and algorithm implementations. Use when reviewing code, checking solutions, or providing feedback on implementations.
Load this skill for any project with interactive UI, such as buttons, links, forms, modals, dropdowns, menus, tabs, sliders, toolbars, carousels, or custom widgets, in React or vanilla JavaScript. Never ship an interactive element that cannot be fully operated by keyboard alone. Always ensure a visible focus indicator, logical tab order, correct widget key behavior, and no keyboard traps. Targets WCAG 2.2 Level AA.
Generates a LiveAPI client service class in the user's chosen programming language. Use when the user wants to build, scaffold, or integrate a client that connects to the Gemini Enterprise LiveAPI websocket endpoint, handles session setup/resumption, bearer token refresh, and sending/receiving `ClientMessage`/`ServerMessage` protos. Don't use for general (non-live, non-bidirectional) Gemini API usage such as one-shot `generateContent`, embeddings, image/video generation, or fine-tuning — use the `gemini-api` skill for those.
Integrate Login with ChatGPT (@opencoredev/loginwithchatgpt-*): let users sign in with their own ChatGPT account and run AI requests against their ChatGPT plan. Use when adding ChatGPT account login, mounting createChatGPTHandler, rendering the LoginWithChatGPT React button or useLoginWithChatGPT hook, wiring createChatGPTProxyProvider / createChatGPT with the Vercel AI SDK, or debugging /api/chatgpt routes.
Use Mergify config commands to validate configuration files, simulate Mergify actions, and write Mergify configuration. ALWAYS use this skill when validating, writing, editing, or simulating Mergify config. Triggers on config validate, config simulate, mergify configuration, mergify.yml, .mergify.yml, Mergify merge queue config, pull_request_rules, queue_rules, Mergify conditions.
Custom middleware patterns for ASP.NET Core applications. Covers request/response pipeline, middleware ordering, conditional middleware, IMiddleware factory pattern, IExceptionHandler (.NET 8+), and reusable middleware components. Use when creating custom middleware in ASP.NET Core applications, understanding middleware pipeline ordering, or implementing cross-cutting concerns like logging, authentication, and caching.
Inline actor migration for Motoko canisters using `(with migration = ...)` syntax. Use when upgrading canister state, renaming fields, changing field types, or restructuring actor state without the --enhanced-migration flag. For multi-step migration chains, use migrating-motoko-enhanced instead.
Set up, write, and publish documentation sites with Mintlify, and work on existing Mintlify projects. Use when the user wants to create a docs site for a repo or product, turn a docs/ folder or README into a hosted docs site, document an API from an OpenAPI spec, migrate docs from Docusaurus, GitBook, ReadMe, Fern, or another platform, preview docs locally, or publish docs to a shareable URL. Also use when editing a project with docs.json, including pages, navigation, components, API references, and customizing appearance or browser behavior with CSS, JavaScript, React, and snippets.
Master ES6+ features including async/await, destructuring, spread operators, arrow functions, promises, modules, iterators, generators, and functional programming patterns for writing clean, efficient JavaScript code. Use when refactoring legacy code, implementing modern patterns, or optimizing JavaScript applications
Master monorepo management with Turborepo, Nx, and pnpm workspaces to build efficient, scalable multi-package repositories with optimized builds and dependency management. Use when setting up monorepos, optimizing builds, or managing shared dependencies
Best practices for navigation and routing in Flutter using GoRouter, covering hierarchical route trees, type-safe `@TypedGoRoute` definitions, named navigation, redirects, and deep linking setup. Use when creating, modifying, or reviewing routes, deep links, redirects, or navigation logic that uses package:go_router or package:go_router_builder, including widget tests that mock GoRouter or provide it through `InheritedGoRouter`. Also use for call-site navigation, however small: an `onTap`, button, or tap handler that takes the user from one screen to another, choosing between `context.go`, `goNamed`, `context.push`, `pushNamed`, or `pop`, navigating to a path such as `/products/p1`, passing data to a destination, or returning a result to the caller. A one-line navigation call is still navigation work. Route motion belongs to the animations skill, even inside a `GoRouteData` subclass.
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.