Skills
98,639 packaged capabilities and playbooks for agents. Install any of them with one command.
Development
This skill should be used when the user asks to "write a game design document", "create a GDD", "design my game", "document game mechanics", "plan game progression", "define core loop", "art direction", "audio design plan", "monetization strategy", "game concept document", "plan my game before coding", or wants to produce a structured design document for a Phaser 4 game before writing any code.
Plan work as vertical slices or an explicitly selected mechanism-reduction program in small, known-good increments, with independent pull requests or an optional stacked-PR topology across one or more ordered slices. Use when starting significant work, turning already-split stories into implementation plans, planning PRs, or sequencing complex tasks. For a mechanism-reduction program, use reduce-system-complexity first to define the conserved contract, terminal mechanism-removal state, and behavior/mechanism gates; planning then sequences it. If the input is a broad story, epic, feature idea, or backlog item that still needs product slicing, use story-splitting first; if a slice needs review layers or later slices should start on an evolving baseline before lower PRs merge, also use stack-pull-requests
Renders a Structurizr workspace as a Claude artifact or a static site, using the Renderizr CLI. Use when the user wants to see, share, publish or hand over a C4 architecture model — "show me the architecture", "turn this workspace into an artifact", "publish these diagrams" — or mentions Renderizr, workspace.json or artifact.html
Implements Syncfusion .NET MAUI Backdrop Page (SfBackdropPage) with back layer and front layer surfaces. Use when working with backdrop pages, SfBackdropPage, back layer, front layer, or reveal/conceal animations. Covers backdrop navigation patterns, header icons, corner shapes, reveal height, layer state events, and liquid glass effect.
Implements Syncfusion® .NET MAUI Barcode Generator (SfBarcodeGenerator) for generating machine-readable barcodes. Use when working with barcodes, barcode generation, QR codes, data matrix, EAN codes, UPC codes, Code128, or Code39. This skill covers both one-dimensional (linear) and two-dimensional (matrix) barcode symbologies with extensive customization options.
Implements Syncfusion® .NET MAUI DigitalGauge (SfDigitalGauge) control to display alphanumeric characters in LED-style digital format. Use when working with digital gauges, LED displays, seven-segment displays, digital clocks, or digital counters. Ideal for displaying numbers, letters, or special characters in a digital/electronic display format.
Implements Syncfusion .NET MAUI Kanban Board (SfKanban) control. Use when implementing kanban boards, task management visualizations, workflow tracking, or agile boards in .NET MAUI applications. Covers installation, data binding with default and custom models, card customization, column configuration, workflow transitions, and drag-and-drop events.
Implements Syncfusion .NET MAUI Rating (SfRating) control. Use when implementing star ratings, review systems, feedback mechanisms, or product ratings in MAUI apps. Covers rating control configuration, star rating, half-star rating, custom rating shapes, rating precision, and rating events.
Implements Syncfusion .NET MAUI SignaturePad (SfSignaturePad) for capturing digital signatures with realistic handwritten appearance. Use when working with signature capture, digital signatures, electronic signatures, or signing documents in .NET MAUI applications. Covers stroke customization, saving signatures as images, signature point data retrieval, and signature validation.
Implements Syncfusion .NET MAUI Smart DataGrid (SfSmartDataGrid) with AI-powered features. Use when working with SfSmartDataGrid, AI-powered grid operations, natural language data commands, AI sorting, AI filtering, or conversational grid interaction. Covers Azure OpenAI grid integration and natural language commands for grids.
Implements Syncfusion® .NET MAUI TreeMap (SfTreeMap) for visualizing hierarchical data with rectangles sized and colored by values. Use when implementing hierarchical data visualization, heat maps, squarified layouts, multi-level data grouping, or brush settings for hierarchical displays. This skill covers installation, data binding, layout types, hierarchical levels with GroupPath, legend configuration, tooltips, and TreeMap customization.
Configure SendGrid dynamic templates (Handlebars), tracking settings (opens, clicks, subscriptions), link branding for custom tracking domains, and content types (HTML, plain text, AMP). Use when customizing SendGrid email content, tracking behavior, or branded links. Requires a SendGrid API key (SG.-prefix) — not applicable to the Twilio Email API (comms.twilio.com).
Fulfill user requests by calling the ZenTao RESTful API v2.0. Covers CRUD and status transitions across 20 modules, including project sets, products, projects, executions, requirements (Story/Epic/Requirement), Bugs, tasks, test cases, test plans, product plans, versions, releases, feedback, tickets, apps, users, and files. Use this skill for project management tasks such as asking about ZenTao, zentao, checking project progress, retrieving a Bug list, updating a requirement status, or creating a task.
Reference guide for the Atlassian CLI (acli), a command-line tool for interacting with Jira Cloud and administering Atlassian organizations. Use when the user wants to perform Jira operations (create, edit, search, or transition work items; manage projects, boards, sprints, filters, and dashboards), administer Atlassian organizations (manage users and authentication), or automate Atlassian workflows from the terminal. Covers all acli commands, including: jira workitem (create, edit, search, assign, transition, comment, clone, link, archive), jira project (create, list, update, archive), jira board/sprint, jira filter/dashboard, admin user management, and rovodev (Rovo Dev AI agent). Requires an authenticated acli binary already installed on the system.
Use when working with CodeIgniter 3 or CodeIgniter 4 applications — controllers, models, views, routing, database queries, migrations, libraries, helpers, security, file uploads, email, caching, testing, services, events, CLI commands, and deployment. Trigger on: CI3 projects with system/core/CodeIgniter.php or index.php bootstrapping CI, CI4 projects with app/Config/App.php or spark CLI, any mention of CodeIgniter, HMVC in CI3, Shield auth in CI4, CI query builder usage, or 'php spark' commands
Creates commits with Conventional Commits format (feat/fix/docs/refactor/test/chore), scope detection, co-author attribution, and pre-commit hook compliance. Validates staged changes and prevents secrets or generated-only files from being committed. Use for requests to commit, stage and commit, save progress, or write a commit message. Do not invoke it for incidental git commits during other work; those stay a bare CLI call.
DaisyUI 5 component library best practices, patterns, and usage for Tailwind CSS 4. Use when building UI with daisyUI class names, creating daisyUI-based layouts, styling HTML with daisyUI components, creating React wrapper components for daisyUI, or any task involving daisyUI (.html, .jsx, .tsx, .vue, .svelte files). Triggers on: daisyUI components (btn, card, modal, drawer, navbar, etc.), daisyUI color names (primary, secondary, base-100, etc.), daisyUI config (@plugin "daisyui"), daisy-meta.ts, generate-daisy-safelist, compound components wrapping daisyUI, or any UI task in a project using daisyUI/Tailwind CSS 4.
Design token management with the W3C Design Token spec, three-tier hierarchy (global/alias/component), OKLCH color, Style Dictionary transforms, and dark mode theming. Use when creating token files, implementing theme systems, or building design-to-code pipelines.
Detect performance anti-patterns and apply optimization techniques in Go. Covers allocations, benchmarks and benchstat, pprof and traces, GC and GOMEMLIMIT tuning, PGO, and HTTP client reuse. Use when checking performance, finding slow code, reducing allocations, profiling, or reviewing hot paths. Trigger examples: "check performance", "find slow code", "reduce allocations", "benchmark this", "profile", "optimize Go code". Not for: concurrency correctness (go-concurrency-review) or general style (go-coding-standards).
Use when running a scheduled mechanical maintenance pass over a repo — dead code removal, useless-test pruning, layering-violation fixes, duplicate unification, logic bugfixing, logic simplification, or excess-abstraction flattening. Invoked as `/cadence:maintenance-routine <archetype>`, typically from a scheduler (cron, a CI schedule, or an agent workbench's time trigger). One archetype per invocation; opens PRs and never merges. NOT for reviewing a PR (use pr-review), NOT for ad-hoc refactoring the user asked for directly.
Build, customise and deploy a production booking website on the Opencals hosted API by starting from one of the official open-source Next.js templates (salon, barbershop, clinic, padel/squash club, luxury car rental, language school, villa rental, reformer Pilates studio, dental group, coworking) and the @opencals/storefront-sdk. Use when the user wants a booking/appointment/scheduling site, an Opencals storefront, gives you a business idea + inspiration and asks you to build the booking site, or says "build me a booking website". Covers picking a template, scaffolding, wiring services + availability + checkout, rebranding, and deploying to Vercel. Also covers multi-day rentals booked by the day (cars, equipment) via template-noir, nightly stays with fixed check-in/check-out (villas, cabins, rooms) via template-bali-villas, and schools with group classes, levels, teachers and online lessons via template-fluently, and fitness studios with a multi-studio class timetable, beds left and Full classes via template-reformer, and dental practices or clinic groups with many clinicians across several studios via template-alba, and coworking networks (desks, meeting rooms, booths, studios at several buildings) via template-gable. For the exact API/SDK call shapes, use the companion `opencals-storefront-api` skill.
Package, publish, and distribute DeepSeek Harness (DSH) plugins—npm pack artifact validation, GitHub/npm/hub release-track selection, tarball overrides installs for the unpublished cohort (0.1.2-alpha.*), and CI/release gates with rollback. Use when publishing a plugin, packing a tarball, wiring a plugin into a profile/hub, or installing an alpha version that is not on npm; show a plan and obtain user confirmation before any publish action.
Lazy senior dev mode for coding work: ship the smallest change that fully solves the task, reuse what the codebase, stdlib, platform, or installed dependencies already provide, keep validation, data-loss handling, security, and accessibility, leave one small check for risky logic, and end with what was skipped and any risk. Use for ponytail, /ponytail, be lazy, simplest solution, YAGNI, over-engineering or bloat complaints, /ponytail-review, /ponytail-audit, /ponytail-debt, /ponytail-gain, or a shortcut-debt ledger
React/TypeScript frontend implementation patterns. Use during the implementation phase when creating or modifying React components, custom hooks, pages, data fetching logic with TanStack Query, forms, or routing. Covers component structure, hooks rules, custom hook design (useAuth, useDebounce, usePagination), TypeScript strict-mode conventions, form handling, accessibility requirements, and project structure. Does NOT cover testing (use react-testing-patterns), E2E testing (use e2e-testing), or deployment.
Create notarized macOS app releases with Sparkle auto-updates, DMG installers, and GitHub releases. Use when releasing macOS apps, creating DMG files, notarizing apps, or setting up Sparkle updates. Handles version updates, code signing, notarization, and distribution.
Build Slack apps using the Bolt framework across Python, JavaScript, and Java. Covers Block Kit for rich UIs, interactive components, slash commands, event handling, OAuth installation flows, and Workflow Builder integration. Focus on best practices for production-ready Slack apps. Use when: slack bot, slack app, bolt framework, block kit, slash command.
Implements Syncfusion® .NET MAUI Sunburst Chart (SfSunburstChart) for hierarchical data visualization using a radial, multi-level circular layout. Use this for sunburst charts, radial hierarchical charts, multi-level pie charts, or hierarchical data visualization with drill-down capabilities. Ideal for visualizing organizational structures, file systems, or nested categorical data.
Triage PostHog error tracking issues during a daily or on-call review. Use when the user asks "what's broken?", "what new errors do we have?", "show me top errors today", "what should I look at this morning", or wants a prioritized list of active issues to work on. Surfaces new and high-impact issues, ranks by users affected and recency, points at linked replays, and proposes next actions (investigate, assign, suppress, merge).
Enforces Flutter widget composition — extract named const Widget classes never `Widget _buildX()` methods, lean build() (no I/O/formatting/domain math, precompute in the ViewModel), dumb Views that watch one Notifier and route intents via ref.read, StatelessWidget by default with every controller disposed, lazy `.builder` lists, cheapest-widget choices (SizedBox/ColoredBox/Align over Container), a strict key policy (ValueKey for reorderable lists, never GlobalKey), gesture→visible-focusable-fallback wiring, plus structural layout — full-bleed background vs SafeArea content, computed cell sizing, the GridView cross/main-axis spacing trap, EdgeInsetsDirectional, and resizeToAvoidBottomInset/IME handling. Use when building or refactoring any screen or widget, splitting a large build() into components, writing GridView/ListView/LayoutBuilder/SafeArea/Scaffold, wiring onTap/onLongPress/Draggable, choosing a key or data class, or reviewing widget code in a diff.
Zod v4 schema validation for TypeScript. Covers primitives, string formats, objects, arrays, unions, coercion, transforms, refinements, parsing, type inference, error customization, JSON Schema, file validation, and metadata. Use when writing schemas, validating input, parsing data, inferring types, or converting schemas with Zod.
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.