Skills
100,928 packaged capabilities and playbooks for agents. Install any of them with one command.
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Direct access to Google's own SEO data via Search Console (Search Analytics, URL Inspection, Sitemaps), PageSpeed Insights v5, CrUX field data with 25-week history, Indexing API v3, GA4 organic traffic, YouTube video search, Google NLP entity/sentiment analysis, Knowledge Graph entity verification, Web Risk safety, and Google Ads Keyword Planner. Bridges crawl-based analysis (the rest of this catalogue) with Google's real-time field data — actual Chrome user metrics, real indexation status, real search performance, real organic traffic. Use when the user asks "search console", "GSC", "PageSpeed", "CrUX", "field data", "indexing API", "GA4 organic", "URL inspection", "google api setup", "real CWV data", "impressions", "clicks", "CTR", "position data", "LCP", "INP", "CLS", "FCP", "TTFB", "Lighthouse scores", "youtube SEO", "knowledge graph", "keyword planner", or "real google data".
Image optimization analysis for SEO and performance. Checks alt text, file sizes, formats, responsive images, lazy loading, CLS prevention, image SERP rankings (via DataForSEO), and image file optimization (WebP/AVIF conversion, IPTC/XMP metadata injection). Use when user says "image optimization", "alt text", "image SEO", "image size", "image audit", "optimize images", "image metadata", "image SERP", "convert to webp", or "image file optimize".
Serves LLMs with high throughput using vLLM's PagedAttention and continuous batching. Use when deploying production LLM APIs, optimizing inference latency/throughput, or serving models with limited GPU memory. Supports OpenAI-compatible endpoints, quantization (GPTQ/AWQ/FP8), and tensor parallelism
Fast structured generation and serving for LLMs with RadixAttention prefix caching. Use for JSON/regex outputs, constrained decoding, agentic workflows with tool calls, or when you need 5× faster inference than vLLM with prefix sharing. Powers 300,000+ GPUs at xAI, AMD, NVIDIA, and LinkedIn.
Ship a NEW capability to vigiles so it actually reaches a user — a new export, public function, subpath, CLI flag, or hook-vocabulary word. Use when about to add, or having just added, a feature / export / public API to this repo. Runs the executable checks a green `npm run check` does NOT make — reachable from a public door, API-surface diff READ, a public doc home, the experimental_ decision, a gate on a frozen tree. NOT for bug fixes, refactors, doc-only or test-only edits.
Shopify development skills: Admin GraphQL, Storefront, Hydrogen, Liquid, Polaris, Functions, POS, and more. Use when building, querying, or validating code for Shopify's development ecosystem (e.g. Admin API queries, Hydrogen components, Liquid themes, checkout extensions). Skills are installable via the `npx skill` CLI and provide Claude Code with API-specific context, documentation search, and code validation for each Shopify surface.
Organizes and rewrites prose and notes into outline-style bullet points built around claims and supporting evidence. Use for requests such as "write an outline" or "organize the key points into bullets". Do not use for listing items or task management. For slide creation, do not launch it on its own; it handles only the outline structure as a dependency of the `shunk031-writing-technical-slides` skill.
Rewrites technical explanations and paper-summary slide text into a structure where the hierarchy of sections and slide items is immediately clear. Do not use for general telegraphic style, retrospectives, slide visual design, or file creation
Reorganizes or rewrites articles and notes as concise telegraphic-style outline bullets, omitting words clear from context and conveying one idea per line. Use for requests like “write a report,” “make it an HTML report,” “in telegraphic style,” or “shorten the bullet points.” Do not use when the request is only to proofread or polish a report that remains in paragraph form. For technical slides, do not trigger independently; it only handles the writing style as a dependency of the `shunk031-writing-technical-slides` skill. Do not use to create slide files
Use this skill after implementation and before testing to run a quality gate. Reviews changed files against the task document, checks maintainability standards, classifies plan deviations, and decides whether the work can proceed to verification.
Validate skills against agentskills.io specification. Use when adding new skills to the marketplace, reviewing skill PRs, checking skill compliance, or running quality gates on skills. Validates frontmatter fields (name, description, compatibility, metadata, allowed-tools), directory naming, line limits, and structure.
Professional sub-skill for scikit-learn focused on robust pipeline architecture, custom estimator development, advanced feature engineering, and rigorous model validation. Covers Target Encoding, Nested Cross-Validation, and Production Deployment.
Multi-cloud orchestration for ML workloads with automatic cost optimization. Use when you need to run training or batch jobs across multiple clouds, leverage spot instances with auto-recovery, or optimize GPU costs across providers.
Use when the user asks to confirm feature trade-offs in a PRD or development plan item by item; not for quality reviews, writing documents from scratch, or implementation. Briefly explain each feature, its value, and the planned approach; revise the document after confirmation, rejection, or changes
Use when a Spec Pack is complete and its reusable assets need to be promoted to the project SSOT (ADR/contract/ops/NFR/registry), and there is a risk of copying the whole pack and polluting the project, skipping spec-context, or mistaking merge-back for a git merge.
Provides comprehensive guidance for Stable Diffusion AI image generation including model usage, prompt engineering, parameters, and image generation. Use when the user asks about Stable Diffusion, needs to generate AI images, configure models, or work with Stable Diffusion.
Analyze stocks and cryptocurrencies using Yahoo Finance data. Supports portfolio management, watchlists with alerts, dividend analysis, 8-dimension stock scoring, viral trend detection (Hot Scanner), and rumor/early signal detection. Use for stock analysis, portfolio tracking, earnings reactions, crypto monitoring, trending stocks, or finding rumors before they hit mainstream.
Ask, plan & execute skill for adding STRK20 privacy to a Starknet project. Use when a developer wants to add privacy to the Starknet app open in this session — private/shielded transfers, confidential balances, private payments, private swaps or DeFi, hiding user↔account links — mentions STRK20, privacy pool, shielding, viewing keys, or the Privacy Wallet API, or wants an existing STRK20_INTEGRATION_PLAN.md executed. Inspects the open repo, interviews the developer, picks the right integration route, writes a repo-specific integration plan, and — after the developer approves it — executes the plan phase by phase (app code only, never Cairo contracts).
This skill should be used when user asks to "use supabase CLI", "supabase init", "supabase start", "run migrations", "deploy edge functions", "manage Supabase project", or works with the supabase command-line tool for local development and project management.
Python-based PPT editor with style presets, natural language animation support, and style extraction from PPT/PDF. Use when users need to "edit existing PPT", "modify slide", "add animation to PPT", "apply promotion style", "extract style from PPT/PDF", "提取样式", "编辑PPT", "修改第X页", "添加动画", "应用晋升风格", or want to maintain consistent styling across PPT slides. Supports editing specific pages, applying theme presets (promotion/tech), extracting styles from existing documents, and adding animations via natural language descriptions.
Implements the Syncfusion dotnet Calculate Library for parsing and evaluating formulas using CalcEngine, ICalcData, CalcQuickBase, and ExcelLikeComputations. Supports formula computation, custom functions, cross-sheet references, and XlsIO formula evaluation. Trigger when implementing formula calculations, expression parsing, workbook formula evaluation, or custom function registration.
Comprehensive guide for implementing Syncfusion TypeScript dropdown components including AutoComplete, ComboBox, Mention, Dropdownlist, Multiselect, ListBox, and MultiColumn ComboBox. Use this when building selection interfaces, data binding, filtering, cascading dropdowns, dual list transfer, custom templates, and accessible dropdown experiences.
Use this skill when the user asks about Syncfusion JavaScript licensing, license keys, license registration, license validation errors, trial licenses, or license troubleshooting. This skill provides comprehensive guidance on generating, registering, and managing Syncfusion license keys for JavaScript applications, including edition-based and platform-based licensing models, registration methods, CI/CD integration, and resolving common licensing errors.
Comprehensive guide for implementing Syncfusion EJ2 JavaScript Popup components including Dialog, Predefined Dialog (DialogUtility), and Tooltip. Use this when building modal/modeless dialogs, alert/confirm windows, draggable dialogs, resizable windows, popovers, tooltips, and overlaid content with custom positioning, animations, WCAG 2.2 accessibility, forms integration, and event handling in TypeScript/JavaScript applications.
Project scaffolding and maintenance guidance for app creation, add-ons, ecosystem integration, custom development, and documentation queries. Use when a project uses TanStack CLI or when the task needs its setup, implementation, debugging, testing, migration, or integration guidance.
Library-maintenance guidance for package structure, dependencies, ESLint, Vite, publishing, and CI/CD. Use when a project uses TanStack Config or when the task needs its setup, implementation, debugging, testing, migration, or integration guidance.
Reactive collection guidance for live queries, optimistic mutations, persistence, sync engines, and framework adapters. Use when a project uses TanStack DB or when the task needs its setup, implementation, debugging, testing, migration, or integration guidance.
Devtools guidance for setup, framework adapters, plugins, event instrumentation, marketplace use, and production builds. Use when a project uses TanStack Devtools or when the task needs its setup, implementation, debugging, testing, migration, or integration guidance.
Type-safe keyboard shortcut guidance for registration, sequences, scopes, recording, key state, display, and adapters. Use when a project uses TanStack Hotkeys or when the task needs its setup, implementation, debugging, testing, migration, or integration guidance.
Guidance for discovering, installing, generating, validating, and maintaining package-owned Agent Skills. Use when a project uses TanStack Intent or when the task needs its setup, implementation, debugging, testing, migration, or integration guidance.
Execution-control guidance for debounce, throttle, rate limit, queue, batch, async retry, and framework adapters. Use when a project uses TanStack Pacer or when the task needs its setup, implementation, debugging, testing, migration, or integration guidance.
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.