Skills
97,905 packaged capabilities and playbooks for agents. Install any of them with one command.
Development
Build interactive Sankey Chart visualizations showing weighted flows and relationships between categories using nodes and links. Use this skill whenever the user mentions Sankey diagrams, flow visualization, process flows, value flows between categories, node and link styling, or wants to create diagrams that display the magnitude and direction of flows across stages or systems. The Sankey Chart is perfect for visualizing supply chains, energy flows, revenue streams, customer journeys, and data transformations.
Implement Smith Chart visualization for RF and transmission line analysis. Use this skill when building high-frequency circuit applications, impedance/admittance series plots, or transmission line parameter visualizations. Perfect for network analysis dashboards, component testing interfaces, or technical engineering applications requiring Smith chart data representation.
When user needs to create sparklines (compact data visualizations) in ASP.NET Core applications, always use this skill to implement sparkline components, configure chart types (line, column, area, win-loss, pie), bind data, customize appearance, add markers and data labels, enable user interactions (tooltips, track lines), and ensure accessibility compliance immediately.
Implements Syncfusion Flutter SignaturePad (SfSignaturePad) for capturing handwritten signatures and drawings in Flutter apps. Use when implementing digital signatures, document signing, e-signature fields, or touch/stylus drawing surfaces. This skill covers stroke customization, background color, saving signatures as images, and clearing the pad.
Create interactive dialogs and modal windows in React with Syncfusion DialogComponent. Implement modal/modeless dialogs with custom positioning, dragging, resizing, animations, templating, and keyboard navigation. Use this skill whenever the user needs to display dialog boxes, modal windows, confirmation prompts, forms in popups, floating panels, or complex windowed interactions.
Implement the Syncfusion React DropDownList component for single-value selection from a predefined list. Use this when adding a dropdown, select box, or searchable list using Syncfusion React. This skill covers data binding (local, remote/OData), filtering, grouping, templates, and cascading dropdowns.
Guide for implementing Syncfusion WinUI DataGrid (SfDataGrid) for tabular data display in desktop applications. Use this skill when working with data grids, sorting, filtering, grouping, or CRUD operations. Covers data binding, column configuration, master-details views, Excel export, and performance optimization including data virtualization and custom templates.
Comprehensive guide for setting up Syncfusion WinUI components, including license registration, NuGet package installation, system requirements verification, and troubleshooting. Use this skill when users need help with Syncfusion licensing, installation, WinUI component configuration, theme setup, or resolving installation errors.
Tailwind CSS v4 implementation and review guidance. Use when installing Tailwind, styling UI, building responsive or dark-mode layouts, extending CSS-first themes and utilities, diagnosing class detection, or migrating from v3. Covers stable v4.3 behavior; inspect the project's installed version before applying version-specific advice.
TanStack Query v5 (React Query) server-state management for React: QueryClient and QueryClientProvider setup, custom useQuery hooks, useMutation with error handling, useInfiniteQuery pagination, useSuspenseQuery, query keys, staleTime/gcTime caching, invalidation, prefetching, optimistic updates, and React Query Devtools. Use when adding data fetching to a React app, debugging stale data or caching problems, fixing request waterfalls or background refetching, or migrating React Query v4 to v5 breaking changes: cacheTime renamed to gcTime, isLoading renamed to isPending, required object syntax, initialPageParam required, keepPreviousData removed in favor of placeholderData, and onSuccess/onError query callbacks removed.
Generate structured task lists from specs or requirements. IMPORTANT: After completing ANY spec via ExitSpecMode, ALWAYS ask the user: "Would you like me to generate a task list for this spec?" Use when user confirms or explicitly requests task generation from a plan/spec/PRD.
Select or review the frontend/CMS/deployment stack for UI/UX site projects after concept definition and before design-to-code or launch work. Use when choosing between static HTML, React/Next/Vite, CMS/admin needs, Figma/Pencil handoff, SEO constraints, existing-site rebuild, or maintainability tradeoffs.
Analyze decisions made during implementation, review, or design work and distinguish project-wide guidance from route-specific fixes, already-documented rules, and premature patterns. Use when the user asks which lessons or decisions deserve inclusion in project documentation, wants to review proposed guidelines before approving documentation changes, or asks to update project guidance from recent work.
AST-based code analysis using tree-sitter. Use for parsing code structure, extracting symbols, finding patterns with tree-sitter queries, analyzing complexity, and understanding code architecture. Supports Python, JavaScript, TypeScript, Go, Rust, C, C++, Swift, Java, Kotlin, Julia, and more.
JS/TS style guidelines and review checklist for workerd. Covers TypeScript strictness, import conventions, export patterns, private field syntax, error handling, feature gating, and test structure. Load this skill when reviewing or writing JavaScript or TypeScript code in src/node/, src/cloudflare/, or JS/TS test files under src/workerd/.
This skill should be used when the user asks to "optimize TypeScript performance", "speed up tsc compilation", "configure tsconfig.json", "fix type errors", "improve async patterns", or encounters TS errors (TS2322, TS2339, "is not assignable to"). Also triggers on .ts, .tsx, .d.ts file work involving type definitions, module organization, or memory management. Does NOT cover TypeScript basics, framework-specific patterns, or testing.
Use when checking which TYPO3 versions an extension says it supports, when composer.json and ext_emconf.php disagree, when a version bump has left some of the files that state it behind, when reviewing a TYPO3 extension for what needs attention, or when auditing coding standards, TER readiness, deprecations and modernization to v12/v13/v14 (v14.3 LTS is the default). Raising an extension to a newer TYPO3 version is not this skill: that belongs to typo3-extension-upgrade.
Use this skill for plain CSS and style-block architecture. Apply it when the task involves .css files, selectors, specificity, cascade layers, tokens, layout or theming, accessibility styling, browser-support fallbacks, or CSS architecture in Vue, Nuxt, or Tailwind-bearing projects.
UE5.6-UE5.8 debugging and validation workflow for logs, asset checks, and regression triage. Use when requests involve troubleshooting why gameplay does not work, validating expected output, narrowing minimal repro, and producing concrete fix steps.
Clone or recreate a live website URL, page, or section as React + Tailwind with extracted DOM, CSS, assets, responsive layout, motion, and interactions. Use for live-URL implementation or fidelity repair; not capture-only or diff-only requests.
UI/UX design intelligence. 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.
Always invoke for UiPath Maestro Case Management build work: `caseplan.case` or `caseplan.json` (Studio Web also: `case.stage.json`, `default.stage.json`), `sdd.md`, or building/creating a case when no SDD exists yet (the case design is produced first, then confirmed in one review). Resolves tenant resources then authors or edits caseplan.case directly with Write/Edit. For .xaml→uipath-rpa, .flow→uipath-maestro-flow, .bpmn→uipath-maestro-bpmn. For standalone case SDD design, case `sdd.draft.md` finalization, PDD→SDD, or cross-product planning→uipath-planner
TRIGGER for `.flow` / `.flow.ts` files and UiPath Flow / Maestro Flow / Maestro Automate requests: build, edit, run, debug, fix, or evaluate a flow. Author with the TypeScript builder SDK (`@uipath/maestro-builder-sdk`): nodes, triggers, schedules, connectors, IXP document extraction (add or list IXP models), inline agents, HITL, chat/voice flows, bindings, brownfield edits, and the check/compile/validate loop. Operate: upload, publish, deploy, debug a real run, trigger a process, job status/traces, pause/resume/cancel/retry an instance. Diagnose: faulted runs, incidents, runtime variables, why validate passed but the run failed. Evaluate: eval sets, evaluators, simulations, eval runs. Case plans (`caseplan.case` / `caseplan.json`) → uipath-maestro-case; BPMN (`.bpmn`, `.bpmn.ts`) → uipath-maestro-bpmn. DO NOT TRIGGER for raw IXP labelling or prompt tuning outside a Flow → uipath-ixp; standalone agents → uipath-agents; C#/XAML → uipath-rpa
Asset loading and content management with Addressables. Group organization, async loading, memory management, remote content. Triggers: /addressables, /assets, 'Addressables', 'AssetReference', 'chargement async', 'remote content', 'DLC', 'asset bundles', 'Resources.Load migration', 'loading screen'.
Advanced animation in Unity: Animator, IK, Root Motion, Timeline, Playables API, Animation Rigging, blend trees. Triggers: /anim, /animation, 'Animator avance', 'IK', 'Root Motion', 'Timeline', 'Playables API', 'Animation Rigging', 'blend tree', 'state machine animation', 'animation events'.
Complete Unity 6+ audio system: SFX, music, ambience, 3D spatialization, AudioMixer, pooling, Audio Random Container, Scriptable Audio Pipeline. Triggers: /unity-audio, /audio, audio, son, musique, AudioMixer, AudioSource, spatial audio, 3D sound, sound design, SFX
Generate and run Unity tests (NUnit, EditMode, PlayMode). Analyzes existing code, extracts testable logic, generates fitting tests. Triggers: /test, /unity-test, 'NUnit', 'test unitaire Unity', 'PlayMode test', 'EditMode test', 'TDD Unity', 'ecrire des tests', 'tester mon code'.
Building user interfaces with UI Toolkit (UXML, USS, C# bindings). Generates complete screens with UXML structure, USS styling and a C# presenter. Triggers: /uitk, /ui, 'UI Toolkit', 'UXML', 'USS', 'UIDocument', 'data binding UI', 'runtime UI', 'menu principal', 'HUD', 'interface utilisateur Unity'.
Create or review an implementation and validation plan before development starts. Use after a ready or conditionally ready spec, when deciding how to implement a change by vertical slices, identifying affected files and modules, sequencing development tasks, planning TDD or validation before coding, checking architecture fit, or producing a repo-native plan artifact that links specs to tests, commits, and evidence.
Build, run, or review disposable prototypes after a draft spec exists, when one uncertain product, UI, backend, agent workflow, prompt, state-machine, or architecture question needs evidence before spec review or planning can proceed. Use when a spec, review, or plan contains an assumption that text alone cannot resolve, when an interaction must be tried, or when prototype evidence must feed back into the active workflow artifact.
Build component-based UIs with ViewComponent and view_component-contrib. Use when creating reusable UI components, implementing slots and style variants, or building component previews. Triggers on ViewComponent creation, component patterns, Lookbook previews, or UI component architecture.
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.
Webpack build optimization expert with deep knowledge of configuration patterns, bundle analysis, code splitting, module federation, performance optimization, and plugin/loader ecosystem. Use PROACTIVELY for any Webpack bundling issues including complex optimizations, build performance, custom plugins/loaders, and modern architecture patterns. If a specialized expert is a better fit, I will recommend switching and stop.
Full website rebuild agent. Takes an existing website URL and rebuilds it from scratch into a world-class, SEO-optimized, WCAG AA accessible, visually stunning website using Astro + Tailwind CSS, deployed to Vercel via GitHub. Executes a rigorous 14-phase process: brand extraction, content scraping, SEO audit, design audit, rebuild planning, full build with design system, copy optimization, 3 QA rounds, competitive tools research, tools build, tools QA, pre-deploy checklist, and Vercel deployment. Produces 11+ documentation deliverables. Triggers on: "rebuild website", "redesign website", "rebuild site from URL", "website rebuild", "redo this website", "make this website better", "rebuild from scratch", "full site redesign", or any request to take an existing URL and create a new, professional website from it. Also triggers when the user provides a URL and asks to build/create/design a new version of that site.
Generative multi-approach design or solution panel. Generates N independent candidate solutions from different angles (MVP-first, risk-first, user-first, performance-first, etc.), has parallel judges score them on multiple dimensions against re-read evidence, then synthesizes the winner by grafting the best ideas from the losers. Use for "which approach?", architecture decisions, design problems, "best way to implement X". Settles by direct oracle / throwaway prototype before convening the panel where possible. Invoke via /work-judge.
Run an extremely strict maintainability review of the current diff for abstraction quality, giant files, duplication, layering leaks, and spaghetti-condition growth. Measures with oracles before opining, applies diverse review lenses, and sweeps outside the diff for completeness. Effort tiers: low/medium → fewer lenses, highest-confidence findings only; high → all lenses + completeness sweep; ultra → fan lenses across files in parallel. Use for a deep code quality audit or an especially harsh maintainability review.
Implement a task N ways in parallel and pick the best — by OUTCOME, not by pitch. Spawns N sub-agents in isolated git worktrees, each from a DISTINCT angle, gates every candidate through a per-candidate oracle (build + typecheck + test + lint), grades survivors from the ACTUAL diff (never the self-report), runs a completeness sweep on the winner, applies it to main, and re-verifies the oracle green before declaring a winner. Use when asked to "best of n", "try multiple approaches", "parallel implementations", "/work-tournament", or "/bon".
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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.