Skills
98,639 packaged capabilities and playbooks for agents. Install any of them with one command.
Development
Implement secure authentication and authorization using Clerk. Use this skill when you need to authenticate users, protect routes, check permissions, implement subscription-based access control, or integrate Clerk with your application. Triggers include "authentication", "auth", "authorization", "Clerk", "protect route", "check user", "sign in", "session", "permissions", "subscription access".
Use when creating SwiftData custom schema migrations with VersionedSchema and SchemaMigrationPlan — property type changes, relationship preservation (one-to-many, many-to-many), the willMigrate/didMigrate limitation, two-stage migration patterns, and testing migrations on real devices
Expert knowledge for Azure Artifacts development, including troubleshooting, best practices, decision-making, limits and quotas, security, configuration, integrations and coding patterns, and deployment. Use for managing feeds, upstream sources, views, .npmrc auth, .artifactignore, GitHub Actions package publishing, and other Azure Artifacts development tasks. Not for Azure DevOps (use azure-devops), Azure Pipelines (use azure-pipelines), Azure Repos (use azure-repos), or Azure Boards (use azure-boards).
Build and deploy applications on inference.sh. Use when getting started, understanding the platform, creating apps, configuring resources, or needing an overview of inference.sh app development. Supports both Python and Node.js. Triggers: inference.sh app, belt app, inf.yml, inference.py, inference.js, deploy app, app development, build app, create app, GPU app, VRAM, app resources, app secrets, app integrations, multi-function app
Builds command-line interfaces for Python libraries using Click or Typer. Includes command groups, argument handling, progress bars, shell completion, and CLI testing with CliRunner. Use when adding CLI functionality to a library or building standalone command-line tools.
Expert guidance for Rails caching — fragment caching, Russian doll caching, cache keys/versioning, low-level caching (Rails.cache), conditional GET (stale?/fresh_when), and cache stores (Solid Cache, Redis, Memcached). Use when implementing cache, caching, fragment cache, Russian doll, Rails.cache, Solid Cache, cache key, HTTP caching, stale?, fresh_when, cache store, or optimizing performance.
Use when work must be verified in local Canvas Workbench, or when the user asks to run, open, check, or author component mocks or page previews in Workbench. Verifies that Canvas Workbench is available through the project's package runner, starts the local Workbench dev server, and keeps Workbench verification as part of the implementation workflow
Motion and creative-coding skill package covering Three.js, GSAP ScrollTrigger, React Three Fiber, Framer Motion, Babylon.js, A-Frame, PixiJS, Locomotive Scroll, Barba.js, React Spring, Magic UI, AOS, Anime.js, Lottie, Rive, Spline, and a Blender-to-web pipeline. One of the broadest motion/creative suites available.
Use when building or reviewing FaasJS backend APIs and jobs: .api.ts files, defineApi, zod params schemas, HttpError, HTTP helpers, middleware/staticHandler, .job.ts files, defineJob, typed job paths and params, enqueueJob including transaction-coupled enqueueing, cron schedulers, retries, leases, workers, discovery, and job tests.
Use when working with @faasjs/pg or PostgreSQL in FaasJS: Tables declaration merging, QueryBuilder, select aliases, parameterized sql expressions, raw SQL, numeric/decimal/bigint boundaries, transaction isolation and read-only modes, row locks, concurrency, migrations, SchemaBuilder, TableBuilder, faasjs-pg CLI, PgVitestPlugin, shared migration snapshots, per-file test database isolation, and database type tests.
Use when creating, configuring, reviewing, or onboarding a FaasJS project; working with create-faas-app, vp CLI, TypeScript or Vite config, feature folders, file and naming conventions, test placement, JSDoc/comments, or complete application slice workflow.
Use when implementing, reviewing, or verifying normative FaasJS runtime behavior and compatibility for faas.yaml, staged config discovery and merge order, zero-mapping route resolution, HTTP request/response protocol envelopes, status behavior, plugin identity, concurrent mount and failed-mount retry behavior, lifecycle execution, config layering, and config-driven plugin loading.
Use when working with @faasjs/utils or FaasJS data helpers: deepMerge, streamToString, stringToStream, objectToStream, streamToObject, parseJson, parseObjectFromJson, parseArrayFromJson, parseYaml, z validation helpers, isObjectRecord, parseSchemaValue, formatSchemaError, and isPathInsideRoot.
Expert guidance for building forms in Rails 8 applications. Use when creating forms, form_with, form helpers, nested forms, select helpers, file uploads, form builders, accepts_nested_attributes_for, fields_for, collection_select, grouped_collection_select, date/time selects, checkboxes, radio buttons, rich text areas, or any form-related view code. Covers model-backed forms, URL-based forms, complex nested attributes with _destroy, custom form builders, CSRF tokens, strong parameters for nested forms, and Stimulus integration.
Framer Motion performance optimization guidelines. Use this skill when writing, reviewing, or refactoring React animations with Framer Motion to ensure optimal performance patterns. Triggers on tasks involving motion components, animations, gestures, layout transitions, scroll-linked effects, and SVG animations
Complete design system reference for React applications. Covers colors, typography, spacing, component patterns, glassmorphism effects, GPU-accelerated animations, and WCAG AA accessibility. Use when implementing UI, choosing colors, applying spacing, creating components, or ensuring brand consistency.
Enforces Intent UI component library conventions. Use when writing React components, reviewing UI code, or building pages/features that involve UI elements. Ensures semantic color tokens, correct form and overlay patterns, the `intent` variant prop, and that existing components from src/components/ui/ are used.
Plan and execute product isolation migrations to a facade plus contract layer in PostHog, following the Visual review architecture. Use when a product still exposes internals (models/logic/views) across boundaries and needs migration toward contracts.py + facade/api.py + presentation separation, with a PR strategy that minimizes review latency and conflicts with parallel work
Expert guidance for Rails view rendering, layouts, partials, and content composition. Use when rendering templates, choosing between render and redirect_to, creating or using partials, working with layouts, using content_for/yield/provide, rendering collections, streaming responses, or handling Turbo-aware status codes. Covers render vs redirect (agents confuse these!), partial locals (never instance variables!), layout selection, conditional rendering, nested layouts, and collection rendering.
Operate and validate Obscura for JavaScript page loading, stealth browsing, anti-fingerprinting, tracker blocking, screenshots and visual comparison, CDP automation with Puppeteer or Playwright, screencasting, PDF export, MCP browser interaction, and web extraction. Use when running Obscura against deterministic fixtures or real sites, diagnosing rendering, geometry, resource, identity, or transport failures, or choosing the correct CLI, CDP, MCP, rendering, or stealth workflow.
Guide for oRPC — a type-safe RPC framework combining end-to-end type safety with OpenAPI compliance. Use when the user explicitly mentions "oRPC" or asks to "create oRPC procedures", "set up oRPC server", "configure oRPC client", "add oRPC middleware", "define oRPC router", "use oRPC with Next.js/Express/Hono/Fastify", "generate OpenAPI spec with oRPC", "integrate oRPC with TanStack Query", "stream with oRPC", "handle errors in oRPC", "set up oRPC contract-first", "migrate from tRPC to oRPC", or asks about oRPC procedures, routers, middleware, context, plugins, adapters, or server actions. Covers server setup, client creation, middleware chains, error handling, OpenAPI generation, file uploads, event iterators (SSE/streaming), server actions, contract-first development, and framework adapter integrations. Do NOT use for generic RPC/gRPC questions, tRPC-only questions (without migration context), or general TypeScript API development without oRPC.
Implement retrieval-augmented generation systems. Use when building knowledge-intensive applications, document search, Q&A systems, or need to ground LLM responses in external data. Covers embedding strategy, vector stores, retrieval pipelines, and evaluation.
Expert guidance for building reusable UI components in Rails using partials, CSS classes, and helpers. Use when creating components, partials, reusable UI patterns, empty states, modals, cards, buttons, badges, alerts, data tables, or any component pattern. Covers decision framework for CSS-only vs partial vs helper vs ViewComponent, proper use of local_assigns, block yielding, capture for slots, variant patterns, and component galleries.
Use the react-call library (createCallable) when building UI that resolves a value back to its caller — confirmations, dialogs, form modals, toasts, notifications, context menus, pickers. Use when a React task involves any such "await the UI" interaction, when code imports createCallable, useMutationFlow, react-call/host, or react-call/vite, or when the user mentions react-call or Callables. If react-call isn't a dependency yet but the problem fits, propose adding it. Covers Declare→Root→Call, call vs upsert, mutation flow, multi-preview Hosts, SSR, and the single-Root rule.
Signals scout for PostHog distributed tracing (APM / OpenTelemetry spans). Watches per-service RED metrics for error-rate and latency regressions, new error signatures, and traffic cliffs, and audits for standing performance issues: N+1 calls, expensive query shapes, and caching candidates
Construir protótipos descartáveis para responder uma pergunta técnica, de interação ou visual com custo e fidelidade mínimos. Use para spikes, provas de conceito e exploração de alternativas; não promover protótipo a produção sem reimplementação e validação.
Provides comprehensive guidance for Spring Cloud microservices including service discovery, configuration management, load balancing, circuit breakers, API gateways, and distributed tracing. Use when the user asks about Spring Cloud, needs to build microservices, implement service discovery, or work with Spring Cloud components.
Provides comprehensive guidance for Spring Data JPA including repositories, entity management, query methods, and database operations. Use when the user asks about Spring Data JPA, needs to work with JPA repositories, implement data access layers, or configure JPA in Spring
Technical blog post writing with structure, code examples, and developer audience conventions. Covers post types, code formatting, explanation depth, and developer-specific engagement patterns. Use for: engineering blogs, dev tutorials, technical writing, developer content, documentation posts. Triggers: technical blog, dev blog, engineering blog, technical writing, developer tutorial, tech post, code tutorial, programming blog, developer content, technical article, engineering post, coding tutorial, technical content
WordPress performance code review and optimization analysis. Use when reviewing WordPress PHP code for performance issues, auditing themes/plugins for scalability, optimizing WP_Query, analyzing caching strategies, checking code before launch, detecting anti-patterns, or when the user mentions "performance review", "optimization audit", "slow WordPress", "slow queries", "high-traffic", "scale WordPress", "code review", "timeout", "500 error", "out of memory", or "site won't load". Detects anti-patterns in database queries, hooks, object caching, AJAX, and template loading.
Design autonomous coding loop prompts for Clay's Ralph Loop. Use this skill when the user says /clay-ralph, mentions "ralph loop", wants to set up an autonomous coding loop, or wants Clay to run tasks while they're AFK. Guides the user through creating .claude/PROMPT.md and .claude/JUDGE.md for hands-off iterative development. Even if the user just says "I want to automate this task" or "run this overnight", this skill applies.
Reduce a change's complexity WITHOUT altering behavior—lower cognitive load, not line count: read the target plus its callers and tests, take a baseline check, then apply the smallest clarifying edits in the safest order (dead code and boolean cleanup → flatten nesting with guard clauses → consolidate duplication → local renames and helper extraction), respecting Chesterton's Fence. Re-run the baseline after each edit and revert any change that alters observable behavior or regresses, keeping only safe improvements—a simplification that changes semantics is a bug, not a cleanup. Use only when the user explicitly asks to simplify or clean up existing code.
CSS animations, transitions, keyframes, and modern motion APIs. Use when adding animations, transitions, scroll-driven effects, or view transitions. Use for css-animation, transition, keyframes, view-transitions, scroll-animation, transform, motion-preference, animation-timeline.
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.