Skill directory
Agent skills
Focused instruction packs that teach a coding agent one job well. Browse the catalog and use any of them inside a RiverX project.
18,175Skills
1,902Publishers
249Official
UI UX Design Prosaifyxpro/ui-ux-design-pro-skill>065UI UX Designersickn33/agentic-awesome-skillsCreate interface designs, wireframes, and design systems. Masters user research, accessibility standards, and modern design tools.01UI UX Expertmartinholovsky/claude-skills-generatorExpert UI/UX designer specializing in user-centered design, accessibility (WCAG 2.2), design systems, and responsive interfaces. Use when designing web/mobile applications, implementing accessible interfaces, creating design systems, or conducting usability testing.03UI UX Polishoakoss/agent-skillsIterative UI/UX polishing workflow for web applications. Use when improving visual polish, refining desktop and mobile UX separately, running iterative enhancement cycles, applying design patterns like glassmorphism or bento grids, or auditing accessibility and WCAG compliance. Use for Stripe-level visual quality, responsive optimization, and design system alignment.05UI UX Pro Maxathevon/genjutsuUI/UX design-system intelligence - 84 styles, 192 palettes, 74 font pairings, 25 charts, 99 UX guidelines across 22 stacks (searchable dataset + CLI). Internal genjutsu module: loaded by /genjutsu:cast and /genjutsu:paint, not invoked directly.045UI UX Pro Maxdavila7/claude-code-templatesUI/UX design intelligence. 50 styles, 21 palettes, 50 font pairings, 20 charts, 9 stacks (React, Next.js, Vue, Svelte, SwiftUI, React Native, Flutter, Tailwind, shadcn/ui). 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. Integrations: shadcn/ui MCP for component search and examples.027UI UX Pro Maxgalaxy-dawn/claude-scholarThis skill should be used when the user asks to design or review a UI, create a landing page or dashboard, choose colors or typography, improve accessibility, or implement polished frontend interfaces with a clear design system.04UI UX Pro Maxguanyang/open-agent-hubUI/UX design intelligence for web and mobile. Includes 50+ styles, 161 color palettes, 57 font pairings, 161 product types, 99 UX guidelines, and 25 chart types across 10 stacks (React, Next.js, Vue, Svelte, SwiftUI, React Native, Flutter, Tailwind, shadcn/ui, and HTML/CSS). Actions: plan, build, create, design, implement, review, fix, improve, optimize, enhance, refactor, and check UI/UX code. Projects: website, landing page, dashboard, admin panel, e-commerce, SaaS, portfolio, blog, and mobile app. Elements: button, modal, navbar, sidebar, card, table, form, and chart. Styles: glassmorphism, claymorphism, minimalism, brutalism, neumorphism, bento grid, dark mode, responsive, skeuomorphism, and flat design. Topics: color systems, accessibility, animation, layout, typography, font pairing, spacing, interaction states, shadow, and gradient. Integrations: shadcn/ui MCP for component search and examples.021UI UX Pro Maxlikaia/nginxpulseUI/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.01UI UX Pro Maxnexu-io/open-design|01UI UX Pro Maxpixel-process-ug/superkit-agents>01UI UX Pro Maxsickn33/agentic-awesome-skillsComprehensive design guide for web and mobile applications. Use when designing new UI components or pages, choosing color palettes and typography, or reviewing code for UX issues.027UI UX Pro Max Skillreason-machines/trending-skillsAI design intelligence skill for building professional UI/UX across multiple platforms with 161 reasoning rules, 67 styles, and automated design system generation01UI UX Reviewerarjenschwarz/agentic-codingEvaluate and improve user experience of interfaces (CLI, web, mobile)01UI Visual Validatorsickn33/agentic-awesome-skillsRigorous visual validation expert specializing in UI testing, design system compliance, and accessibility verification.01Ui5 Typescript Conversioncline/skillsA skill for converting UI5 (SAPUI5/OpenUI5) projects to TypeScript.02Uikitprisma-labs-dev/apple-skillsAPI reference: UIKit. Query for UIView, UIViewController, controls, table and collection views, navigation controllers, scenes, Auto Layout, images, colors, gestures, presentation, and SwiftUI hosting.030Uikit App Modernizationsuperagents-lab/xcode27-skillsModernizes UIKit apps for multi-window environments by replacing legacy shared-state APIs with context-appropriate modern alternatives. This includes references to mainScreen, interfaceOrientation, application and scene lifecycle, as well as safe area inset updates.05Uikit Expertivan-magda/uikit-expert-skillWrite, review, or improve UIKit code following best practices for view controller lifecycle, Auto Layout, collection views, navigation, animation, memory management, and modern iOS 18–26 APIs. Use when building new UIKit features, refactoring existing views or view controllers, reviewing code quality, adopting modern UIKit patterns (diffable data sources, compositional layout, cell configuration), or bridging UIKit with SwiftUI. Does not cover SwiftUI-only code.016Uikit Maxtornikegomareli/uikit-agent-skill>-014Uk Business Englishjezweb/claude-skillsBritish business English writing style for professional communications — polished, understated, EN-GB spelling (colour, organise, centre). Use whenever the user is writing for a British audience: emails, chat messages, proposals, client communications, blog posts, web copy, or any business writing. Apply to drafting, editing, and tone-checking professional text.01Ultracitehaydenbleasel/ultraciteUltracite is a zero-config linting and formatting preset for JavaScript/TypeScript projects. Use when: (1) Setting up or initializing Ultracite in a project (ultracite init), (2) Running linting or formatting commands (check, fix, doctor), (3) Writing or reviewing JS/TS code in a project that uses Ultracite — to follow its code standards, (4) Troubleshooting linting/formatting issues, (5) User mentions 'ultracite', 'lint', 'format', 'code quality', or 'biome/eslint/oxlint' in a project with Ultracite installed.02Ultracitesecondsky/claude-skillsUltracite multi-provider linting/formatting (Biome, ESLint, Oxlint). Use for v6/v7 setup, provider selection, Git hooks, MCP integration, AI hooks, migrations, or encountering configuration, type-aware linting, monorepo errors.028Ultracookpaulnsorensen/easy-cheeseRetired — /ultracook no longer exists as a standalone skill. Any /ultracook invocation resolves to /cook, which now owns the single implementation pathway (including the fan-out mechanics this skill used to run). Use /cook instead.08Ultrathinkintellectronica/agent-skillsDisplay colorful ANSI art of the word "ultrathink". Use when the user says "ultrathink" or invokes /ultrathink.01Umap Learnk-dense-ai/scientific-agent-skillsUse UMAP-learn for nonlinear dimensionality reduction, 2D/3D embeddings, clustering preprocessing, supervised or semi-supervised UMAP, DensMAP, AlignedUMAP, and Parametric UMAP workflows.02Umbraco Backofficeumbraco/umbraco-cms-backoffice-skillsUmbraco backoffice extension customisation - complete working examples showing how extension types combine0336Unauthorized Access Common Servicesyaklang/hack-skills>-02Unbrowseunbrowse-ai/unbrowseOne-call web access for agents with cache-first API replay and browser capture on misses. Unbrowse passively learns first-party route DAGs while browsing, independently validates replay, and keeps remote sharing consented and fail-closed. Prefer it over WebFetch, curl, and browser loops.02895Uncertainty And Unitsk-dense-ai/scientific-agent-skillsTrack physical units and propagate measurement uncertainty in scientific calculations using pint and uncertainties. Use for unit conversion and dimensional checking, GUM uncertainty budgets, Type A and Type B evaluation, coverage factors and expanded uncertainty, Monte Carlo propagation, significant-figure and plus-minus reporting, error propagation through curve fits, CODATA constants, auditing Python code for stripped units or broken uncertainty propagation, and order-of-magnitude plausibility checks using dimensionless groups (Reynolds, Peclet, Damkohler, Knudsen, Biot, Womersley), characteristic scales such as diffusion time or Debye length, and observed magnitude ranges. Trigger on "is this number physically reasonable", "sanity check these units", "what regime is this flow in", or a result that looks off by orders of magnitude.014Uncloudaffaan-m/eccUse when managing an Uncloud cluster — deploying services, configuring Caddy ingress, adding static proxy routes for non-cluster devices, publishing ports, scaling, inspecting logs, or managing machines and volumes with the `uc` CLI.01Uncodixfycyxzdev/uncodixfyPrevents generic AI/Codex UI patterns when generating frontend code. Use this skill whenever generating HTML, CSS, React, Vue, Svelte, or any frontend UI code to enforce clean, human-designed aesthetics inspired by Linear, Raycast, Stripe, and GitHub instead of typical AI-generated UI.09Understandegonex-ai/understand-anythingAnalyze a codebase to produce an interactive knowledge graph for understanding architecture, components, and relationships054Understand Anything Knowledge Graphreason-machines/trending-skillsTurn any codebase into an interactive knowledge graph using Claude Code skills — explore, search, and ask questions about any project visually.01Understand Chategonex-ai/understand-anythingUse when you need to ask questions about a codebase or understand code using a knowledge graph01Understand Dashboardegonex-ai/understand-anythingLaunch the interactive web dashboard to visualize a codebase's knowledge graph01Understand Diffegonex-ai/understand-anythingUse when you need to analyze git diffs or pull requests to understand what changed, affected components, and risks01Understand Domainegonex-ai/understand-anythingExtract business domain knowledge from a codebase and generate an interactive domain flow graph. Works standalone (lightweight scan) or derives from an existing /understand knowledge graph.02Understand Explainegonex-ai/understand-anythingUse when you need a deep-dive explanation of a specific file, function, or module in the codebase01Understand Figmaegonex-ai/understand-anythingAnalyze a Figma file via the Figma REST API and generate an interactive design knowledge graph (pages, screens, components, component sets, instances, design tokens) with a kind:"design" dashboard.03Understand Knowledgeegonex-ai/understand-anythingAnalyze a Karpathy-pattern LLM wiki knowledge base and generate an interactive knowledge graph with entity extraction, implicit relationships, and topic clustering.03Understand Onboardegonex-ai/understand-anythingUse when you need to generate an onboarding guide for new team members joining a project01Undocshairyf/skillsMinimal Documentation Theme and CLI for shared usage across UnJS projects. Use when creating documentation sites with Nuxt, Nuxt Content, and Nuxt UI.025Uni Appuni-helper/skillsComprehensive skill reference for uni-app cross-platform development framework016Uni Appuview-pro/skillsComprehensive skill reference for uni-app cross-platform development framework015Uni Helperuni-helper/skillsComprehensive skill reference for uni-helper ecosystem - AI-powered development tools for uni-app017Unibind Databasegoogle-deepmind/science-skills>-03Unicorn Studiomengto/skillsUse when embedding and customizing Unicorn Studio interactive animations on the web (embed, responsive sizing, performance, layering with UI, fallbacks).05
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