Browse skills

Force LLMs to return typed, validated JSON — not free-text. Use when someone asks to "get structured data from LLM", "parse LLM response as JSON", "make AI return typed output", "validate LLM output", "extract structured data with AI", "use instructor with OpenAI", or "get reliable JSON from Claude/GPT". Covers OpenAI structured outputs, Anthropic tool_use for structured data, Instructor library, Zod schemas, Pydantic models, and retry strategies for malformed responses.

Discover subdomains of a target domain using passive and active enumeration techniques. Use when tasks involve subdomain enumeration, attack surface mapping, DNS reconnaissance, finding hidden services, identifying forgotten subdomains, or expanding the scope of a security assessment. Subfinder uses passive sources (certificate transparency logs, DNS datasets, search engines) to find subdomains without touching the target directly.

Build applications with Supabase as the backend — Postgres database, authentication, real-time subscriptions, storage, and edge functions. Use when someone asks to "set up Supabase", "add authentication", "create a real-time app", "set up row-level security", "configure Supabase storage", "write edge functions", or "migrate from Firebase to Supabase". Covers project setup, schema design with RLS, auth flows, real-time subscriptions, file storage, and edge functions.

Add persistent memory to AI agents using Supermemory API -- the #1 ranked AI memory engine. Use when: building AI assistants that remember users, adding long-term memory to chatbots, creating personalized AI products, storing conversation context across sessions.

Apache Superset is an open-source data exploration and visualization platform. Learn Docker deployment, database connections, chart creation, dashboard building, SQL Lab usage, and programmatic access via the REST API.

You are an expert in Svelte 5 and SvelteKit 2. You help developers build web applications using runes ($state, $derived, $effect, $props, $bindable, $inspect), snippets, stores, transitions, and actions — compiling to minimal vanilla JavaScript with no virtual DOM. Use when building Svelte apps, migrating from Svelte 4, or working with SvelteKit.

Optimize SVG files with SVGO — remove unnecessary metadata, minify paths, merge shapes, configure plugins, and integrate into build pipelines. Use when tasks involve reducing SVG file size, cleaning up exported SVGs from design tools, building icon systems, or automating SVG optimization in CI/CD.

You are an expert in Svix, the enterprise webhook delivery platform. You help developers send reliable webhooks to customers with automatic retries, signature verification, delivery monitoring, endpoint management, and event type filtering — replacing custom webhook infrastructure with a purpose-built service used by companies like Clerk, Resend, and Liveblocks.

Build swarm intelligence systems where multiple AI agents collaborate to make predictions and solve complex problems. Use when: implementing ensemble AI predictions, building consensus-based decision systems, creating multi-agent prediction markets.

You are an expert in SWC, the Rust-based JavaScript/TypeScript compiler. You help developers replace Babel and Terser with SWC for 20-70x faster compilation, minification, and bundling — used by Next.js, Vite, Parcel, and Deno as their default compiler, handling TypeScript stripping, JSX transformation, polyfill injection, and code minification at native speed.

Fetch, cache, and revalidate data in React with SWR — stale-while-revalidate data fetching library by Vercel. Use when someone asks to "fetch data in React", "SWR", "data fetching hook", "cache API calls", "stale-while- revalidate", "auto-refresh data", or "React data fetching without Redux". Covers data fetching, caching, revalidation, mutation, pagination, and optimistic updates.

You are an expert in Symfony, the enterprise PHP framework for building web applications and APIs. You help developers build production systems with Symfony's component architecture, Doctrine ORM, dependency injection, event system, security component, API Platform for REST/GraphQL, and Messenger for async processing — the backbone of enterprise PHP used by companies processing billions of requests.

Manage Linux services with systemd. Use when a user asks to create a system service, run an app on boot, manage background processes, set up timers (cron replacement), or configure service dependencies and auto-restart.

Apply systems thinking to business problems — identify constraints, understand feedback loops, anticipate second-order effects, and improve processes. Use when: diagnosing why a business process is broken, optimizing operations, understanding complex system behavior.

Extract tables from PDFs with high accuracy using camelot. Handles complex table structures including merged cells, multi-line rows, and spanning headers. Use when a user asks to extract a table from a PDF, pull tabular data from a document, convert PDF tables to CSV or Excel, or parse structured tables from reports.

Build zero-trust networks with Tailscale — mesh VPN setup, ACLs, exit nodes, subnet routing, MagicDNS, Funnel, SSH, and API automation. Use when tasks involve connecting remote machines, securing internal services, replacing traditional VPNs, or exposing local services to the internet.

You are an expert in Tailwind CSS v4, the utility-first CSS framework. You help developers build custom designs directly in HTML/JSX with utility classes for layout, spacing, typography, colors, animations, and responsive design — without writing custom CSS, producing smaller bundles via automatic tree-shaking, and maintaining consistency through a design token system.

You are an expert in TanStack Query (formerly React Query), the data-fetching and server state management library. You help developers build React applications with automatic caching, background refetching, optimistic updates, pagination, infinite scroll, and offline support — replacing manual `useEffect` + `useState` patterns with declarative, type-safe data fetching hooks.

Type-safe routing for React with file-based routes, validated search params, loaders, and automatic code splitting. Use when someone asks to "set up routing for React", "type-safe router", "TanStack Router", "file-based routing", "search params validation", "replace React Router with something type-safe", or "add route-level data loading". Covers file-based routing, search params with Zod, route loaders, code splitting, and layouts.

Build full-stack React apps with TanStack Start. Use when a user asks to create a full-stack React application with type-safe server functions, set up file-based routing with SSR/SSG/SPA modes, build APIs with middleware and validation, implement server-side data fetching with TanStack Router, or deploy to Cloudflare/Netlify/Vercel/Node.