Skills
97,725 packaged capabilities and playbooks for agents. Install any of them with one command.
Development
This skill guides writing of new Ruby code following modern Ruby 3.x syntax, Sandi Metz's 4 Rules for Developers, and idiomatic Ruby best practices. Use when creating new Ruby files, writing Ruby methods, or refactoring Ruby code to ensure adherence to clarity, simplicity, and maintainability standards.
Use when the user installs or starts using Runway Dev, needs to sign in or create a Developer Portal account, connect Dev MCP, verify account/project access, or finish setup after a developer_not_found error. Guide the user through the browser steps and continue with the task once setup succeeds
Use when the user asks to generate JSON-LD or structured data markup for a webpage. Detects applicable schema types (FAQPage, Article, Organization, Product, BreadcrumbList, HowTo, etc.) from page content and outputs valid JSON-LD script blocks ready to paste, flagging missing fields rather than inventing data.
Creates language variants of existing Semgrep rules. Use when porting a Semgrep rule to specified target languages. Takes an existing rule and target languages as input, produces independent rule+test directories for each language.
Edit the Stow-managed shell and terminal environment in ~/.dotfiles/home, including zsh, aliases, tmux/sesh, Starship, Ghostty, yabai, Git, and link structure. Use for focused terminal configuration changes. Route Neovim work to neovim and whole-system health checks to audit
Simple Preference Optimization for LLM alignment. Reference-free alternative to DPO with better performance (+6.4 points on AlpacaEval 2.0). No reference model needed, more efficient than DPO. Use for preference alignment when want simpler, faster training than DPO/PPO.
Investigate external libraries, frameworks, and unfamiliar repositories from exact source in a project-local temp clone. Use when docs are incomplete, version-specific behavior matters, codebase learning is needed, or large source exploration should be delegated to focused subagents instead of polluting the main context.
Use when executing I1 (implementation plan) in the sdlc-dev Spec Pack, turning requirements/design into `{FEATURE_DIR}/implementation/plan.md` (the single execution checklist and status SSOT), and providing an unambiguous task list for the subsequent I2 execution.
Create and validate implementation plans (PLAN). Use when planning implementation phases, defining tasks, sequencing work, analyzing dependencies, or working on plan files in .start/specs/. Generates per-phase files (plan/README.md + plan/phase-N.md) for progressive disclosure. Includes TDD phase structure and specification compliance gates.
Use when designing organizational structure (team topologies, Conway's Law alignment), mapping stakeholders by power-interest for change initiatives, defining team interface contracts (APIs, SLAs, decision rights, handoffs), assessing capability maturity (DORA, CMMC, agile maturity models), planning org restructures (functional to product teams, platform teams, shared services), or when user mentions "org design", "team structure", "stakeholder map", "team interfaces", "capability maturity", "Conway's Law", or "RACI".
Converts a Stitch screen, a local HTML file, or a URL into production-ready Next.js 15 App Router components — Server vs Client split, dark mode via CSS variables, TypeScript strict, ARIA, and responsive mobile-first layout. Only the Stitch route needs an API key.
Load PROACTIVELY when task involves CSS architecture, theming, or visual design systems. Use when user says "set up Tailwind", "add dark mode", "create a design system", "make it responsive", or "configure the theme". Covers Tailwind configuration and custom plugins, design token systems, responsive breakpoint strategies, dark mode implementation, component variant patterns (CVA/class-variance-authority), CSS-in-JS alternatives, and animation patterns.
Implements Syncfusion .NET MAUI Accordion (SfAccordion) - a vertically collapsible panel with stacked headers for expanding/collapsing content. Use when working with accordions, collapsible panels, expandable lists, employee lists with details, or FAQ sections in .NET MAUI applications. Covers AccordionItem configuration, expand modes, and grouped content display.
Implement the Syncfusion .NET MAUI Bottom Sheet (SfBottomSheet) control with state management, content configuration, gesture support, and customization. Covers setup, content binding, state transitions, styling, events, and interactive patterns for sliding content panels.
Implements and customize Syncfusion .NET MAUI Button (SfButton) control. Use when working with MAUI buttons, SfButton implementation, button customization, or visual states. Covers button icons, background images, RTL support, custom button views, button styling, events, and checkable buttons.
Implements Syncfusion .NET MAUI Cards (SfCards) - dismissible card views and swipeable card stacks. Use when working with cards, card views, card layouts, swipeable cards, dismissible cards, or card stacks in .NET MAUI. Covers card customization, card events, card data binding, and interactive card components with swipe functionality.
Implements Syncfusion .NET MAUI Carousel (SfCarousel) for navigating through image data or content collections. Use when implementing carousel controls, populating carousel items, or configuring view modes (linear/default). Covers animations, load more functionality, UI virtualization, transformations, and swipe events.
Getting started with Syncfusion® .NET MAUI Toolkit. Covers installation, cross-platform capabilities, system requirements, and development environment setup for Android, iOS, macOS, and Windows applications.
Implements Syncfusion WinUI Calendar Date Picker (SfCalendarDatePicker) control for date selection with calendar dropdown. Use this when building calendar date pickers, date input controls, or dropdown calendar interfaces in WinUI desktop applications. This skill covers date restrictions, blackout dates, calendar localization, week numbers, and customization.
Implements Syncfusion WinUI Cartesian Charts (SfCartesianChart) for data visualization in WinUI applications. Use this when working with column, line, bar, area, or financial charts (OHLC, Candle). This skill covers axis configuration, legends, tooltips, zooming/panning, data labels, and high-performance fast series for large datasets.
Guide implementation of the Syncfusion SfColorPicker control in WinUI applications. Use this skill when implementing color picker UI, solid color selection with RGB/HSV/HSL/CMYK models, or gradient brushes (linear and radial). Covers color spectrum customization, opacity control, brush mode switching, and color value management in WinUI/WinUI 3 projects.
Implements Syncfusion WinUI DatePicker (SfDatePicker) control for date input and selection in desktop applications. Use this when building date input controls, calendar dropdown pickers, or date selection interfaces. This skill covers date restrictions, date formatting, calendar types, dropdown spinners, localization, and blackout dates for WinUI applications.
Guide for implementing Syncfusion WinUI DropDown Color Picker control for interactive color selection with dropdown functionality. Use this skill when implementing color selection with dropdown, color editing modes (RGB/HSV/HSL/CMYK/Hex), customizable dropdown placement, split button modes, or color picker flyout customization in WinUI applications.
Implement Syncfusion WinUI Funnel Chart (SfFunnelChart) for visualizing data across stages in a process or workflow. Use this when working with funnel charts, conversion funnels, sales pipelines, or process stage analysis in WinUI applications. This skill covers stage-based metrics, hierarchical data representation with decreasing values, and visual representation of progressive reduction in data values across sequential stages.
Implements Syncfusion WinUI Kanban (SfKanban) control for workflow visualization and task management. Use this when building Kanban boards, agile project tracking, or workflow management systems in WinUI applications. This skill covers cards, columns, swim lanes, WIP limits, drag-and-drop, workflows, sorting, events, and customization.
Implement Syncfusion WinUI Radial Gauge (SfRadialGauge) component for circular data visualization in desktop applications. Use this when working with radial gauges, speedometers, temperature monitors, or dashboard meters. This skill covers axis configuration, multiple pointer types (needle, shape, content, range), ranges with gradients, annotations, animations, and interactive dragging for WinUI/.NET desktop applications.
Guide for implementing the Syncfusion WinUI Rating (SfRating) control to collect user ratings and feedback on a numeric scale. Use this when implementing star ratings, user reviews, or feedback collection in WinUI 3. This skill covers precision modes (full, half, exact), custom templates, tooltips, and read-only rating display.
Guide for implementing the Syncfusion WinUI Segmented Control for creating mutually exclusive option selectors. Use this skill when implementing segmented controls, segment pickers, tab selectors, or mutually exclusive option selectors in WinUI applications. Essential for segment-based navigation, filter toggles, view switchers, button groups with single selection, or any scenario requiring mutually exclusive selection from 2+ options in WinUI.
Guide for implementing the Syncfusion WinUI Shimmer control to display loading placeholders and skeleton screens. Use this skill when implementing shimmer effects, skeleton screens, content loading animations, or loading placeholders during data fetching in WinUI applications. Essential for enhancing perceived performance during async operations, list loading, profile loading, article loading, or any content loading scenario requiring visual feedback.
Use when encountering any bug, test failure, or unexpected behavior, before proposing fixes - four-phase framework (root cause investigation, pattern analysis, hypothesis testing, implementation) that ensures understanding before attempting solutions
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