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Comprehensive best practices for React Native and Expo apps. Covers list performance, animations, navigation, UI patterns, state management, and monorepo structure.

Official shadcn/ui skill for managing components and design systems. Covers adding, searching, fixing, styling, and composing UI components with correct patterns.

Build Obsidian.md plugins following official API patterns, TypeScript best practices, and plugin review guidelines.

Create new skills, modify and improve existing skills, and measure skill performance. Use when users want to create a skill from scratch, edit, or optimize an existing skill, run evals to test a skill, benchmark skill performance with variance analysis, or optimize a skill's description for better triggering accuracy.

Create, read, edit, and manipulate Word documents (.docx files) with formatting, tracked changes, and text extraction.

69 rules for React and Next.js performance optimisation across 8 priority categories.

Discovers and installs agent skills from the open ecosystem via the skills.sh leaderboard.

Analyze CSV files and generate insights with automatic visualizations, statistics, and data profiling.

Create distinctive, production-grade frontend interfaces with high design quality. Use this skill when the user asks to build web components, pages, artifacts, posters, or applications (examples include websites, landing pages, dashboards, React components, HTML/CSS layouts, or when styling/beautifying any web UI). Generates creative, polished code and UI design that avoids generic AI aesthetics.

Automated UI code auditing against Vercel's web interface guidelines. Reviews for accessibility, design compliance, and best practices.

Enforces a design-first workflow before any code is written. Proposes approaches, writes a spec, then hands off to an implementation plan.

Comprehensive guidance for writing and reviewing Next.js code — RSC boundaries, async patterns, routing, error handling, and data fetching.

Core skills library with 20+ battle-tested skills including TDD, debugging, brainstorming, and collaboration patterns.

Four-phase debugging methodology: root cause investigation, pattern analysis, hypothesis testing, implementation. Never fixes without finding the root cause first.

Toolkit for styling artifacts with a theme. These artifacts can be slides, docs, reportings, HTML landing pages, etc. There are 10 pre-set themes with colors/fonts that you can apply to any artifact that has been creating, or can generate a new theme on-the-fly.

Applies Anthropic's official brand colors and typography to any sort of artifact that may benefit from having Anthropic's look-and-feel. Use it when brand colors or style guidelines, visual formatting, or company design standards apply.

Knowledge and utilities for creating animated GIFs optimized for Slack. Provides constraints, validation tools, and animation concepts. Use when users request animated GIFs for Slack like "make me a GIF of X doing Y for Slack."

Create, read, edit, and manipulate PowerPoint presentations (.pptx files) with layouts, templates, and slide generation.

Toolkit for interacting with and testing local web applications using Playwright. Supports verifying frontend functionality, debugging UI behavior, capturing browser screenshots, and viewing browser logs.

Create beautiful visual art in .png and .pdf documents using design philosophy. You should use this skill when the user asks to create a poster, piece of art, design, or other static piece. Create original visual designs, never copying existing artists' work to avoid copyright violations.

Suite of tools for creating elaborate, multi-component claude.ai HTML artifacts using modern frontend web technologies (React, Tailwind CSS, shadcn/ui). Use for complex artifacts requiring state management, routing, or shadcn/ui components - not for simple single-file HTML/JSX artifacts.

Create, read, edit, and manipulate spreadsheet files (.xlsx, .csv, .tsv) with formulas, charts, and data transformations.

Guide for creating high-quality MCP (Model Context Protocol) servers that enable LLMs to interact with external services through well-designed tools. Use when building MCP servers to integrate external APIs or services, whether in Python (FastMCP) or Node/TypeScript (MCP SDK).

Read, create, merge, split, and manipulate PDF files. Extract text and tables, fill forms, add watermarks, and OCR scanned documents.

Creating algorithmic art using p5.js with seeded randomness and interactive parameter exploration. Use this when users request creating art using code, generative art, algorithmic art, flow fields, or particle systems. Create original algorithmic art rather than copying existing artists' work to avoid copyright violations.

18 go-to-market skills: pricing, outbound sales, SEO, advertising, retention, and marketing operations.

Generate web assets like favicons, app icons, social media images, and Open Graph preview cards.

A set of resources to help me write all kinds of internal communications, using the formats that my company likes to use. Claude should use this skill whenever asked to write some sort of internal communications (status reports, leadership updates, 3P updates, company newsletters, FAQs, incident reports, project updates, etc.).

Build applications with the Claude API or Anthropic SDK. Covers authentication, streaming, tool use, and the Agent SDK.

Agent Skills for developers using AI agents with Supabase — database, auth, storage, and edge functions.

AWS development with CDK best practices, infrastructure patterns, and deployment workflows.

Create interactive data visualizations, charts, and dashboards using D3.js.

Guide users through a structured workflow for co-authoring documentation. Use when user wants to write documentation, proposals, technical specs, decision docs, or similar structured content. This workflow helps users efficiently transfer context, refine content through iteration, and verify the doc works for readers. Trigger when user mentions writing docs, creating proposals, drafting specs, or similar documentation tasks.

Complete Kaggle integration — competition reports, dataset downloads, notebook execution, and submissions.

Product management workflows: PRDs, user stories, sprint planning, roadmaps, and stakeholder communication.

Tools for publishing and managing research papers on Hugging Face Hub — formatting, metadata, and distribution.

Techniques for context engineering with AI agents — managing context windows, prompt structure, and knowledge organisation.

Modern encryption alternative to GPG/PGP with post-quantum support and agent-to-agent communication.

Give AI agents web browser capabilities — navigate, interact, and extract data from web pages.

Manage local CLI AI agents via tmux — start, stop, monitor, assign tasks, and schedule with cron.

Collection of scientific skills for working with specialized libraries, databases, and research workflows.

Build, navigate, and test iOS apps through simulator automation — screenshots, gestures, and UI verification.

General-purpose browser automation using Playwright for testing, scraping, and workflow automation.

Hunt for security threats using Sigma detection rules — log analysis, threat detection, and incident response.

Convert markdown documents into professional EPUB ebook files with proper formatting and metadata.

Comprehensive LLM training skill with guidance, helper scripts, cost estimators, and best practices.

Create animation-rich HTML presentations from scratch or by converting PowerPoint files.

Orchestrate ML model evaluation jobs — benchmarks, metrics, reports, and comparison dashboards.

Official Expo skills for developing React Native mobile apps — navigation, APIs, and deployment.

Create structured training datasets with prompts, templates, and validation scripts for ML models.

Expert guidance for ffuf web fuzzing — directory discovery, parameter fuzzing, and vulnerability scanning.

Automate Google Sheets operations via CLI — read, write, format, and manage spreadsheets programmatically.

Create programmatic videos using Remotion — React-based video generation with animations and compositions.

Security skills for static analysis with CodeQL/Semgrep, code auditing, and vulnerability detection.

Guide for migrating Swift codebases to modern Swift Concurrency (async/await, actors, structured concurrency).

Stream coding methodology for live coding sessions — structured workflows for building in public.

Send message notifications for agent workflows — alert on completion, errors, or milestones.

Pressure-test spec documents with LLM reasoning before writing code — catch design flaws early.