# Cross AI Tools — Long-form context

Last updated: 2026-06-24

## Overview

Cross AI Tools (https://crossaitools.com) is the largest community-curated directory of Claude Code extensions: skills, plugins, and MCP servers. Automated GitHub discovery refreshes the catalog daily. The site serves 300,000+ developers monthly with 100% organic traffic.

The directory is independent and not affiliated with Anthropic. It is open to browse and install without signup. Listings carry community signal (votes, comments) and editorial summaries that GitHub does not have.

## Catalog snapshot

- 21699+ Claude Code skills indexed
- 12515+ MCP (Model Context Protocol) servers indexed
- 2568+ plugin marketplaces indexed
- ~300,000 unique monthly visitors
- Public analytics: https://analytics.vinena.studio/share/overview/hwyH1d

## What Claude Code is

Claude Code is Anthropic's official CLI agent for software engineering, distributed via npm and the Anthropic install path. It is extended through three primitives:

- **Skills**: a single SKILL.md file teaching Claude Code how to do a specific task. Installed with `npx skills add <owner/repo>`. Lightweight, single-purpose, composable.
- **Plugins**: a bundle of Claude Code extensions (skills, MCP servers, slash commands, hooks, or agents) packaged as one installable unit. Lives inside a marketplace.
- **Marketplaces**: a GitHub repo hosting and distributing multiple plugins under one registry. Subscribed with `/plugin marketplace add <owner/repo>`. The `.claude-plugin/marketplace.json` file defines the registry contract.
- **MCP servers**: Model Context Protocol servers that extend Claude Code with external tools, APIs, and integrations. Installed with `claude mcp add --transport stdio <name> <command>`.

## How the catalog is built

1. GitHub discovery jobs run daily, querying repos that contain `SKILL.md`, `.claude-plugin/marketplace.json`, or MCP server signatures.
2. Each candidate is schema-validated against the official Claude Code contracts.
3. Metadata is extracted: name, description, owner, install command, GitHub stars, last update.
4. Items below quality thresholds (no description, no community signal, low star count) are filtered.
5. Editorial summaries are generated for promising items by an LLM pipeline; pages without a summary, vote, or comment are noindexed.
6. The Supabase catalog is published to a public R2 snapshot consumed by the site at build/ISR time.
7. New URLs are submitted to IndexNow for Bing/Yandex/Seznam pickup.

## Top entry points

- [Homepage](https://crossaitools.com): Discover Claude Code skills, plugins, and MCP servers.
- [Skills directory](https://crossaitools.com/skills): Browse all 21699+ Claude Code skills, sorted by installs.
- [MCP server directory](https://crossaitools.com/mcp): Browse all 12515+ MCP servers compatible with Claude Code.
- [Marketplace directory](https://crossaitools.com/marketplaces): Browse all 2568+ plugin marketplaces.
- [Tools](https://crossaitools.com/tools): Hand-picked tools the maintainer uses to build with Claude Code, with affiliate links.
- [Newsletter digest](https://crossaitools.com/digest): This week in Claude: weekly model updates, releases, and notable tools.
- [Advertise](https://crossaitools.com/advertise): Sponsorship pricing and traffic stats.
- [Pricing (machine-readable)](https://crossaitools.com/pricing.md): Structured ad pricing for AI agents evaluating sponsorship.
- [About](https://crossaitools.com/about): Why this directory exists and how it stays curated.
- [Index file](https://crossaitools.com/llms.txt): Shorter top-items index for AI systems.

## Skill categories

- [Frontend Development](https://crossaitools.com/skills/category/frontend): Discover Claude Code skills for frontend development. React, Next.js, Angular, Vue, and UI component skills to accelerate your frontend workflow.
- [Backend & APIs](https://crossaitools.com/skills/category/backend): Claude Code skills for backend development. Build APIs, manage databases, design server architecture, and implement authentication with AI assistance.
- [Testing & QA](https://crossaitools.com/skills/category/testing): Claude Code skills for testing and quality assurance. Write unit tests, end-to-end tests, and improve test coverage with AI-powered testing skills.
- [Security](https://crossaitools.com/skills/category/security): Claude Code security skills for code auditing, vulnerability detection, and security hardening. Protect your applications with AI-powered security analysis.
- [DevOps & CI/CD](https://crossaitools.com/skills/category/devops): Claude Code skills for DevOps workflows. Automate CI/CD pipelines, configure monitoring, manage deployments, and troubleshoot infrastructure issues.
- [Git & Pull Requests](https://crossaitools.com/skills/category/git): Claude Code skills for Git workflows. Write better commits, create pull requests, review code, and manage branches with AI-powered Git skills.
- [Documentation](https://crossaitools.com/skills/category/docs): Claude Code skills for writing documentation. Generate API docs, docstrings, READMEs, and technical content with consistent style and accuracy.
- [Code Review & Quality](https://crossaitools.com/skills/category/code-review): Claude Code skills for code review and quality. Automated code review, linting, refactoring suggestions, and best-practice enforcement.
- [AI & Agent Building](https://crossaitools.com/skills/category/ai-agents): Claude Code skills for building AI agents, MCP servers, and agentic workflows. Accelerate AI development with community-built agent patterns.
- [Skill Development](https://crossaitools.com/skills/category/skill-dev): Claude Code skills for creating new skills. Meta-skills that help you write, test, and publish your own Claude Code skills and SKILL.md files.
- [Data Science & ML](https://crossaitools.com/skills/category/data-science): Claude Code skills for data science and machine learning. Work with datasets, build visualizations, and accelerate ML workflows with Claude.
- [Release Management](https://crossaitools.com/skills/category/releases): Claude Code skills for release management. Generate changelogs, manage versions, preview releases, and automate your shipping workflow.
- [Debugging](https://crossaitools.com/skills/category/debugging): Claude Code skills for debugging and troubleshooting. Find bugs faster, improve error handling, and diagnose issues with AI-powered debugging assistance.
- [Productivity & Planning](https://crossaitools.com/skills/category/productivity): Claude Code skills for productivity and project planning. Manage tasks, plan sprints, make decisions, and organize your development workflow.
- [Automation & Workflows](https://crossaitools.com/skills/category/automation): Claude Code skills for automation and workflow orchestration. Build automated pipelines, integrate tools, and create repeatable workflows.
- [Python](https://crossaitools.com/skills/category/python): Claude Code skills for Python development. Django, Flask, FastAPI, and general Python skills for writing idiomatic, well-tested Python code.
- [Rust](https://crossaitools.com/skills/category/rust): Claude Code skills for Rust development. Write idiomatic Rust, manage memory safely, and follow Rust best practices with AI assistance.
- [Marketing & SEO](https://crossaitools.com/skills/category/marketing-seo): Claude Code skills for marketing and SEO. Optimize pages for search engines, analyze content performance, build marketing automation, and grow organic traffic.
- [Sales & Marketing](https://crossaitools.com/skills/category/sales-marketing): Claude Code skills for sales and marketing workflows. Automate outbound, manage CRM pipelines, generate leads, and run GTM motions with AI-powered sales skills.
- [Cloud & Infrastructure](https://crossaitools.com/skills/category/cloud): Claude Code skills for cloud platforms and infrastructure. Deploy to AWS, manage Azure resources, configure GCP, and write Terraform with AI assistance.
- [Mobile Development](https://crossaitools.com/skills/category/mobile): Claude Code skills for mobile app development. Build Flutter, React Native, SwiftUI, and Kotlin apps with AI-powered mobile development skills.
- [Go](https://crossaitools.com/skills/category/golang): Claude Code skills for Go development. Write idiomatic Go, build concurrent systems, and follow Go best practices with AI assistance.
- [Java & JVM](https://crossaitools.com/skills/category/java): Claude Code skills for Java and JVM development. Spring Boot, Kotlin, Gradle, Maven, and enterprise Java patterns with AI assistance.
- [Design & UI/UX](https://crossaitools.com/skills/category/design-ui): Claude Code skills for design and UI/UX. Build design systems, implement accessibility, create animations, and follow visual design best practices.
- [CLI & Terminal](https://crossaitools.com/skills/category/cli): Claude Code skills for command-line tools and terminal workflows. Build CLIs, write shell scripts, and automate terminal tasks with AI assistance.
- [Office & Documents](https://crossaitools.com/skills/category/office): Claude Code skills for office documents and productivity suites. Work with PDF, Excel, PowerPoint, Google Workspace, and other document formats.
- [Finance & Trading](https://crossaitools.com/skills/category/finance): Claude Code skills for finance and trading. Analyze stocks, build trading bots, interact with crypto exchanges, and model financial data.
- [Game Development](https://crossaitools.com/skills/category/game-dev): Claude Code skills for game development. Build games with Unity, Godot, Unreal Engine, and learn game programming patterns with AI assistance.
- [PHP & Laravel](https://crossaitools.com/skills/category/php): Claude Code skills for PHP development. Laravel, WordPress, Symfony, and modern PHP patterns with AI assistance.
- [Databases](https://crossaitools.com/skills/category/database): Claude Code skills for databases. Write SQL, design schemas, generate migrations, and work with PostgreSQL, MySQL, MongoDB, Redis, and ORMs like Prisma and Drizzle.
- [Generative Media](https://crossaitools.com/skills/category/ai-media): Claude Code skills for generative AI media. Generate and edit images, video, music, and speech with models like Flux, Stable Diffusion, ElevenLabs, and ComfyUI.
- [Video & Audio Editing](https://crossaitools.com/skills/category/video-editing): Claude Code skills for editing real recordings. Cut and tighten videos, remove silences, transcribe audio, generate subtitles, and process podcasts with AI assistance.
- [Web3 & Blockchain](https://crossaitools.com/skills/category/web3): Claude Code skills for Web3 and blockchain development. Write and audit smart contracts, build with Solidity, Foundry, and Hardhat, and integrate wallets and DeFi protocols.
- [.NET & C#](https://crossaitools.com/skills/category/dotnet): Claude Code skills for .NET and C# development. Build with ASP.NET Core, Blazor, Entity Framework, and MAUI, and follow modern C# best practices.

## MCP server categories

- [Sales & Marketing](https://crossaitools.com/mcp/category/sales-marketing): MCP servers for sales and marketing. Connect Claude to CRMs, lead enrichment APIs, outbound tools, and GTM platforms to automate your revenue pipeline.
- [Web & Browser Automation](https://crossaitools.com/mcp/category/web-browser): MCP servers for web browsing, browser automation, and web scraping. Control Chrome, Playwright, Puppeteer, and crawl the web from your AI workflows.
- [Databases](https://crossaitools.com/mcp/category/database): MCP servers for database access and management. Connect Claude to PostgreSQL, MySQL, MongoDB, Redis, Supabase, Firebase, and more.
- [AI & LLM Tools](https://crossaitools.com/mcp/category/ai-agents): MCP servers for AI and LLM workflows. Build agents, run RAG pipelines, manage embeddings, and integrate with OpenAI, Anthropic, and other AI providers.
- [Cloud & Infrastructure](https://crossaitools.com/mcp/category/cloud-infrastructure): MCP servers for cloud platforms and infrastructure management. Control AWS, Azure, GCP, Docker, Kubernetes, Terraform, and Cloudflare from your AI agent.
- [Communication & Messaging](https://crossaitools.com/mcp/category/communication): MCP servers for messaging and communication platforms. Connect Claude to Slack, Discord, Gmail, Telegram, WhatsApp, and other messaging services.
- [Developer Tools](https://crossaitools.com/mcp/category/developer-tools): MCP servers for developer tools and project management. Integrate Claude with GitHub, GitLab, Bitbucket, Jira, Linear, and other dev platforms.
- [Design & Creative](https://crossaitools.com/mcp/category/design-creative): MCP servers for design and creative tools. Connect Claude to Figma, Blender, Unity, Godot, and other creative platforms for AI-assisted design workflows.
- [Documents & Knowledge](https://crossaitools.com/mcp/category/documents-knowledge): MCP servers for document management and knowledge bases. Connect Claude to Obsidian, Notion, Confluence, PDF files, and other knowledge platforms.
- [Search & Web Crawling](https://crossaitools.com/mcp/category/search): MCP servers for web search and crawling. Give Claude access to search engines, web crawlers, and content extraction tools like Exa, Tavily, and Crawl4AI.
- [Automation & Workflows](https://crossaitools.com/mcp/category/automation): MCP servers for automation and workflow orchestration. Connect Claude to n8n, Zapier, cron jobs, and workflow engines to automate complex multi-step processes.
- [Security & Pentesting](https://crossaitools.com/mcp/category/security): MCP servers for security analysis and penetration testing. Run vulnerability scans, static analysis, and security audits with Semgrep, Metasploit, and more.
- [Monitoring & Observability](https://crossaitools.com/mcp/category/monitoring): MCP servers for monitoring, logging, and observability. Connect Claude to Sentry, log aggregators, APM tools, and analytics platforms.
- [Data & Analytics](https://crossaitools.com/mcp/category/data-analytics): MCP servers for data analysis and business intelligence. Work with Excel, CSV, Jupyter notebooks, Google Analytics, and other data tools through Claude.
- [Mobile Development](https://crossaitools.com/mcp/category/mobile): MCP servers for mobile development. Control iOS simulators, interact with Android devices via ADB, and automate mobile testing workflows.
- [Finance & Commerce](https://crossaitools.com/mcp/category/finance-commerce): MCP servers for finance, e-commerce, and advertising platforms. Connect Claude to Stripe, Shopify, Facebook Ads, Salesforce, and other business tools.
- [Media & Entertainment](https://crossaitools.com/mcp/category/media-entertainment): MCP servers for media platforms and creative tools. Connect Claude to YouTube, Spotify, Ableton, video editors, and other media services.
- [Productivity & Office](https://crossaitools.com/mcp/category/productivity-tools): MCP servers for productivity tools and office applications. Connect Claude to calendar apps, note-taking tools, task managers, and office suites.
- [Reverse Engineering](https://crossaitools.com/mcp/category/reverse-engineering): MCP servers for reverse engineering and binary analysis. Connect Claude to Ghidra, IDA Pro, debuggers, and other reverse engineering tools.

## Marketplace categories

- [AI Agents & Orchestration](https://crossaitools.com/marketplaces/category/ai-agents): Discover Claude Code plugin marketplaces for AI agents and orchestration. Browse collections of multi-agent frameworks, autonomous agent tools, and agentic workflow plugins.
- [LLM Integration](https://crossaitools.com/marketplaces/category/llm-integration): Claude Code plugin marketplaces for LLM integration. Browse collections of model provider connectors, RAG pipelines, embedding tools, and prompt engineering utilities.
- [Development Tools](https://crossaitools.com/marketplaces/category/development): Browse Claude Code plugin marketplaces for development tools. Find collections of IDE integrations, SDKs, language tooling, and developer productivity plugins.
- [Frontend & UI](https://crossaitools.com/marketplaces/category/frontend): Claude Code plugin marketplaces for frontend development. Browse collections of React, Vue, CSS, Tailwind, and component library plugins.
- [Backend & APIs](https://crossaitools.com/marketplaces/category/backend-api): Browse Claude Code plugin marketplaces for backend development. Find collections of REST, GraphQL, Express, FastAPI, Django, and NestJS plugins.
- [Databases](https://crossaitools.com/marketplaces/category/database): Claude Code plugin marketplaces for databases. Browse collections of SQL, PostgreSQL, MongoDB, Redis, Supabase, Firebase, and ORM plugins.
- [Testing & Code Quality](https://crossaitools.com/marketplaces/category/testing-quality): Claude Code plugin marketplaces for testing and code quality. Find collections of test frameworks, linters, code review tools, and debugging plugins.
- [DevOps & Cloud](https://crossaitools.com/marketplaces/category/devops-cloud): Browse Claude Code plugin marketplaces for DevOps and cloud infrastructure. Find collections of Docker, Kubernetes, Terraform, AWS, and CI/CD plugins.
- [Security & Compliance](https://crossaitools.com/marketplaces/category/security): Claude Code plugin marketplaces for security and compliance. Discover collections of vulnerability scanners, authentication tools, encryption libraries, and compliance automation.
- [Git & Version Control](https://crossaitools.com/marketplaces/category/git-version-control): Browse Claude Code plugin marketplaces for Git and version control. Find collections of Git workflow tools, GitHub/GitLab integrations, and branching strategy plugins.
- [Documentation & Learning](https://crossaitools.com/marketplaces/category/documentation): Claude Code plugin marketplaces for documentation and learning. Discover collections of doc generators, README tools, wiki integrations, and tutorial builders.
- [Productivity & Planning](https://crossaitools.com/marketplaces/category/productivity): Claude Code plugin marketplaces for productivity and planning. Find collections of task management, project planning, calendar, and organizational plugins.
- [Memory & Context](https://crossaitools.com/marketplaces/category/memory-context): Claude Code plugin marketplaces for memory and context management. Browse collections of session persistence, knowledge graph, and long-term memory plugins.
- [Web & Browser](https://crossaitools.com/marketplaces/category/web-browser): Claude Code plugin marketplaces for web and browser automation. Discover collections of Playwright, Puppeteer, web scraping, and headless browser plugins.
- [Mobile Development](https://crossaitools.com/marketplaces/category/mobile): Browse Claude Code plugin marketplaces for mobile development. Find collections of iOS, Android, React Native, Flutter, and cross-platform mobile plugins.
- [Design & Creative](https://crossaitools.com/marketplaces/category/design-creative): Claude Code plugin marketplaces for design and creative work. Browse collections of Figma integrations, animation tools, 3D/game development, and creative automation plugins.
- [Communication](https://crossaitools.com/marketplaces/category/communication): Claude Code plugin marketplaces for communication. Discover collections of Slack, Discord, email, Telegram, and messaging integration plugins.
- [Automation & Workflows](https://crossaitools.com/marketplaces/category/automation): Browse Claude Code plugin marketplaces for automation and workflows. Find collections of workflow automation, webhook, scheduler, and integration plugins.
- [Business & Finance](https://crossaitools.com/marketplaces/category/business-finance): Claude Code plugin marketplaces for business and finance. Browse collections of marketing, SEO, CRM, payment processing, and e-commerce plugins.
- [Sales & Marketing](https://crossaitools.com/marketplaces/category/sales-marketing): Claude Code plugin marketplaces for sales and marketing. Browse collections of CRM integrations, lead generation, outbound automation, and GTM workflow plugins.
- [Blockchain & Web3](https://crossaitools.com/marketplaces/category/blockchain-web3): Claude Code plugin marketplaces for blockchain and Web3. Discover collections of Ethereum, Solidity, DeFi, smart contract, and crypto development plugins.
- [Data & Analytics](https://crossaitools.com/marketplaces/category/data-analytics): Browse Claude Code plugin marketplaces for data and analytics. Find collections of dashboard tools, data visualization, ETL pipelines, and analytics plugins.
- [MCP Servers](https://crossaitools.com/marketplaces/category/mcp-servers): Claude Code plugin marketplaces for MCP servers. Browse collections of Model Context Protocol servers, integrations, and tooling plugins.
- [Scientific Research](https://crossaitools.com/marketplaces/category/scientific-research): Claude Code plugin marketplaces for scientific research. Discover collections of academic paper tools, citation managers, experiment tracking, and research automation plugins.
- [Media & Audio/Video](https://crossaitools.com/marketplaces/category/media): Claude Code plugin marketplaces for media processing. Browse collections of audio, video, image, transcription, and podcast production plugins.

## Top skills (by installs and stars)

- [caveman](https://crossaitools.com/skills/juliusbrussee/caveman/caveman): Ultra-compressed communication mode cutting token usage ~75% while preserving technical accuracy.
- [grill-me](https://crossaitools.com/skills/mattpocock/skills/grill-me): Relentless interviewing skill that stress-tests plans and designs through systematic questioning.
- [improve](https://crossaitools.com/skills/shadcn/improve/improve): Survey any codebase as a senior advisor and produce prioritized, self-contained implementation plans for other models/agents to execute.
- [systematic-debugging](https://crossaitools.com/skills/obra/superpowers/systematic-debugging): Structured debugging methodology that mandates root cause investigation before attempting any fixes.
- [karpathy-guidelines](https://crossaitools.com/skills/forrestchang/andrej-karpathy-skills/karpathy-guidelines): Behavioral guidelines to reduce common LLM coding mistakes through explicit assumptions, simplicity, and verifiable success criteria.
- [find-skills](https://crossaitools.com/skills/vercel-labs/skills/find-skills): Discover and install specialized agent skills from the open ecosystem when users need extended capabilities.
- [frontend-design](https://crossaitools.com/skills/anthropics/skills/frontend-design): Guidance for distinctive, intentional visual design when building new UI or reshaping an existing one. Helps with aesthetic direction, typography, and making choices that don't read as templated defau
- [vercel-react-best-practices](https://crossaitools.com/skills/vercel-labs/agent-skills/vercel-react-best-practices): React and Next.js performance optimization across 70 rules prioritized by impact.
- [microsoft-foundry](https://crossaitools.com/skills/microsoft/azure-skills/microsoft-foundry): End-to-end deployment, evaluation, and management of AI agents on Microsoft Foundry.
- [azure-ai](https://crossaitools.com/skills/microsoft/azure-skills/azure-ai): Unified access to Azure AI services: Search, Speech, OpenAI, and Document Intelligence.
- [azure-diagnostics](https://crossaitools.com/skills/microsoft/azure-skills/azure-diagnostics): Systematic diagnosis and remediation for Azure production issues using AppLens, Monitor, and resource health.
- [azure-deploy](https://crossaitools.com/skills/microsoft/azure-skills/azure-deploy): Execute Azure deployments for prepared applications with built-in error recovery and validation.
- [azure-prepare](https://crossaitools.com/skills/microsoft/azure-skills/azure-prepare): Prepare Azure applications for deployment with infrastructure-as-code, configuration, and containerization.
- [azure-storage](https://crossaitools.com/skills/microsoft/azure-skills/azure-storage): Unified access to Azure blob storage, file shares, queues, tables, and data lake services.
- [web-design-guidelines](https://crossaitools.com/skills/vercel-labs/agent-skills/web-design-guidelines): Review UI code for Web Interface Guidelines compliance. Use when asked to "review my UI", "check accessibility", "audit design", "review UX", or "check my site against best practices".
- [azure-validate](https://crossaitools.com/skills/microsoft/azure-skills/azure-validate): Pre-deployment validation for Azure readiness with configuration, infrastructure, RBAC, and identity checks.
- [appinsights-instrumentation](https://crossaitools.com/skills/microsoft/azure-skills/appinsights-instrumentation): Guidance and reference material for instrumenting webapps with Azure Application Insights.
- [azure-resource-lookup](https://crossaitools.com/skills/microsoft/azure-skills/azure-resource-lookup): Fast discovery and inventory of Azure resources across subscriptions using Resource Graph queries.
- [entra-app-registration](https://crossaitools.com/skills/microsoft/azure-skills/entra-app-registration): Microsoft Entra ID app registration, OAuth 2.0 configuration, and MSAL integration for secure application authentication.
- [azure-aigateway](https://crossaitools.com/skills/microsoft/azure-skills/azure-aigateway): Configure Azure API Management as an AI Gateway for models, MCP tools, and agents with built-in governance policies.
- [azure-compliance](https://crossaitools.com/skills/microsoft/azure-skills/azure-compliance): azure compliance
- [azure-rbac](https://crossaitools.com/skills/microsoft/azure-skills/azure-rbac): Find minimal Azure RBAC roles, generate assignment commands, and provide Bicep infrastructure code.
- [azure-resource-visualizer](https://crossaitools.com/skills/microsoft/azure-skills/azure-resource-visualizer): Transform Azure resource groups into detailed architecture diagrams showing resource relationships and configurations.
- [azure-kusto](https://crossaitools.com/skills/microsoft/azure-skills/azure-kusto): Execute KQL queries and analyze data in Azure Data Explorer for log analytics, telemetry, and time series insights.
- [azure-messaging](https://crossaitools.com/skills/microsoft/azure-skills/azure-messaging): Diagnose and resolve Azure Event Hubs and Service Bus SDK issues with structured troubleshooting workflows.
- [agent-browser](https://crossaitools.com/skills/vercel-labs/agent-browser/agent-browser): Fast, persistent browser automation with session continuity across sequential agent commands.
- [azure-hosted-copilot-sdk](https://crossaitools.com/skills/microsoft/azure-skills/azure-hosted-copilot-sdk): Build and deploy GitHub Copilot SDK applications to Azure with flexible model configuration.
- [azure-compute](https://crossaitools.com/skills/microsoft/azure-skills/azure-compute): Recommend Azure VM sizes, scale sets, and configurations based on workload requirements and budget.
- [azure-cloud-migrate](https://crossaitools.com/skills/microsoft/azure-skills/azure-cloud-migrate): Assess and migrate cloud workloads from AWS, GCP, and other providers to Azure services.
- [skill-creator](https://crossaitools.com/skills/anthropics/skills/skill-creator): 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

## Top MCP servers (by stars)

- [Context7](https://crossaitools.com/mcp/upstash/context7): Up-to-date code docs for any prompt
- [Vibe Prospecting](https://crossaitools.com/mcp/explorium-ai/vibeprospecting-mcp): Power your chat with B2B data to create lead lists, research companies, personalize your outreach, and more.
- [Supabase](https://crossaitools.com/mcp/supabase-community/supabase-mcp): MCP server for interacting with the Supabase platform
- [Linear](https://crossaitools.com/mcp/app.linear/linear): MCP server for Linear project management and issue tracking
- [GitHub](https://crossaitools.com/mcp/github/github-mcp-server): Connect AI assistants to GitHub - manage repos, issues, PRs, and workflows through natural language.
- [Scrapling MCP Server](https://crossaitools.com/mcp/d4vinci/scrapling): Web scraping with stealth HTTP, real browsers, and Cloudflare bypass. CSS selectors supported.
- [Pubmed Mcp Server](https://crossaitools.com/mcp/cyanheads/pubmed-mcp-server): Search PubMed/Europe PMC, fetch articles and full text (PMC/EPMC/Unpaywall), citations, MeSH terms.
- [Clinicaltrialsgov Mcp Server](https://crossaitools.com/mcp/cyanheads/clinicaltrialsgov-mcp-server): Search ClinicalTrials.gov — find studies, retrieve results, match patients to eligible trials.
- [Airweave Search](https://crossaitools.com/mcp/io.github.airweave-ai/search): MCP server for searching Airweave collections with natural language queries.
- [Slack MCP Server](https://crossaitools.com/mcp/jtalk22/slack-mcp-server): Slack MCP for self-host or managed Cloud, with Gemini CLI and secure-default HTTP.
- [MCP Toolbox for Databases](https://crossaitools.com/mcp/googleapis/genai-toolbox): MCP Toolbox for Databases enables your agent to connect to your database.
- [Keploy](https://crossaitools.com/mcp/io.github.keploy/mcp): End-to-end API testing — generate and run tests from OpenAPI, curl, Postman, or real user traffic.
- [Mcp Grafana](https://crossaitools.com/mcp/grafana/mcp-grafana): An MCP server giving access to Grafana dashboards, data and more.
- [Netdata](https://crossaitools.com/mcp/io.github.netdata/mcp-server): Real-time infrastructure monitoring with metrics, logs, alerts, and ML-based anomaly detection.
- [Figma Context Mcp](https://crossaitools.com/mcp/glips/figma-context-mcp): Give your coding agent access to your Figma data. Implement designs in any framework in one-shot.
- [Pg Aiguide](https://crossaitools.com/mcp/timescale/pg-aiguide): Comprehensive PostgreSQL documentation and best practices, including ecosystem tools
- [Openalex Mcp Server](https://crossaitools.com/mcp/cyanheads/openalex-mcp-server): Access the OpenAlex academic research catalog — 270M+ publications.
- [Claude Flow](https://crossaitools.com/mcp/ruvnet/claude-flow): AI orchestration with hive-mind swarms, neural networks, and 87 MCP tools for enterprise dev.
- [Serena MCP: the IDE for your agent](https://crossaitools.com/mcp/oraios/serena): A powerful toolkit for coding, providing semantic retrieval and editing capabilities.
- [Semiotic](https://crossaitools.com/mcp/nteract/semiotic): Render React data visualizations from JSON. 43 chart types; validate, diagnose, suggest tools.
- [e2a — email for AI agents](https://crossaitools.com/mcp/io.github.mnexa-ai/mcp-server): Authenticated email gateway for AI agents — per-agent inboxes, HITL approval, SPF/DKIM verified.
- [Chrome DevTools MCP](https://crossaitools.com/mcp/chromedevtools/chrome-devtools-mcp): MCP server for Chrome DevTools
- [Oh My Posh Validator](https://crossaitools.com/mcp/dev.ohmyposh/validator): Validate oh-my-posh configurations and segment snippets against the official schema.
- [Firecrawl MCP Server](https://crossaitools.com/mcp/firecrawl/firecrawl-mcp-server): MCP server for Firecrawl — search, scrape, and interact with the web.
- [Claude Code Explorer MCP](https://crossaitools.com/mcp/io.github.nirholas/claude-code-explorer-mcp): Explore the Claude Code CLI source — browse tools, commands, search code, and more.
- [Xcodebuildmcp](https://crossaitools.com/mcp/getsentry/xcodebuildmcp): XcodeBuildMCP provides tools for Xcode project management, simulator management, and app utilities.
- [Repowise](https://crossaitools.com/mcp/repowise-dev/repowise): Codebase intelligence for AI coding agents — graph, git history, docs, decisions, code health.
- [GoldenMatch](https://crossaitools.com/mcp/benseverndev-oss/goldenmatch): Find duplicate records in 30 seconds. Zero-config entity resolution, 97.2% F1 out of the box.
- [Gitlab Mcp](https://crossaitools.com/mcp/zereight/gitlab-mcp): GitLab MCP server for projects, merge requests, issues, pipelines, wiki, releases, and more.
- [Playwright Mcp](https://crossaitools.com/mcp/microsoft/playwright-mcp): Playwright Tools for MCP

## Top marketplaces (by stars and plugin count)

- [f/prompts.chat](https://crossaitools.com/plugins/f-prompts.chat): f.k.a. Awesome ChatGPT Prompts. Share, discover, and collect prompts from the community. Free and open source — self-host for your organization with complete privacy.
- [affaan-m/everything-claude-code](https://crossaitools.com/plugins/affaan-m-everything-claude-code): The agent harness performance optimization system. Skills, instincts, memory, security, and research-first development for Claude Code, Codex, Opencode, Cursor and beyond.
- [obra/superpowers](https://crossaitools.com/plugins/obra-superpowers): An agentic skills framework & software development methodology that works.
- [anthropics/skills](https://crossaitools.com/plugins/anthropics-skills): Public repository for Agent Skills
- [anthropics/claude-code](https://crossaitools.com/plugins/anthropics-claude-code): Claude Code is an agentic coding tool that lives in your terminal, understands your codebase, and helps you code faster by executing routine tasks, explaining complex code, and handling git workflows 
- [nextlevelbuilder/ui-ux-pro-max-skill](https://crossaitools.com/plugins/nextlevelbuilder-ui-ux-pro-max-skill): An AI SKILL that provide design intelligence for building professional UI/UX multiple platforms
- [upstash/context7](https://crossaitools.com/plugins/upstash-context7): Context7 Platform -- Up-to-date code documentation for LLMs and AI code editors
- [ComposioHQ/awesome-claude-skills](https://crossaitools.com/plugins/composiohq-awesome-claude-skills): A curated list of awesome Claude Skills, resources, and tools for customizing Claude AI workflows
- [gsd-build/get-shit-done](https://crossaitools.com/plugins/gsd-build-get-shit-done): A light-weight and powerful meta-prompting, context engineering and spec-driven development system for Claude Code by TÂCHES.
- [thedotmack/claude-mem](https://crossaitools.com/plugins/thedotmack-claude-mem): A Claude Code plugin that automatically captures everything Claude does during your coding sessions, compresses it with AI (using Claude's agent-sdk), and injects relevant context back into future ses
- [payloadcms/payload](https://crossaitools.com/plugins/payloadcms-payload): Payload is the open-source, fullstack Next.js framework, giving you instant backend superpowers. Get a full TypeScript backend and admin panel instantly. Use Payload as a headless CMS or for building 
- [ChromeDevTools/chrome-devtools-mcp](https://crossaitools.com/plugins/chromedevtools-chrome-devtools-mcp): Chrome DevTools for coding agents
- [wshobson/agents](https://crossaitools.com/plugins/wshobson-agents): Intelligent automation and multi-agent orchestration for Claude Code
- [ruvnet/ruflo](https://crossaitools.com/plugins/ruvnet-ruflo): 🌊 The leading agent orchestration platform for Claude. Deploy intelligent multi-agent swarms, coordinate autonomous workflows, and build conversational AI systems. Features enterprise-grade architect
- [anthropics/claude-plugins-official](https://crossaitools.com/plugins/anthropics-claude-plugins-official): Directory of popular Claude Code extensions including development tools, productivity plugins, and MCP integrations
- [vercel-labs/agent-browser](https://crossaitools.com/plugins/vercel-labs-agent-browser): Browser automation CLI for AI agents
- [eyaltoledano/claude-task-master](https://crossaitools.com/plugins/eyaltoledano-claude-task-master): An AI-powered task-management system you can drop into Cursor, Lovable, Windsurf, Roo, and others.
- [Yeachan-Heo/oh-my-claudecode](https://crossaitools.com/plugins/yeachan-heo-oh-my-claudecode): Teams-first Multi-agent orchestration for Claude Code
- [davila7/claude-code-templates](https://crossaitools.com/plugins/davila7-claude-code-templates): CLI tool for configuring and monitoring Claude Code
- [yamadashy/repomix](https://crossaitools.com/plugins/yamadashy-repomix): 📦 Repomix is a powerful tool that packs your entire repository into a single, AI-friendly file. Perfect for when you need to feed your codebase to Large Language Models (LLMs) or other AI tools like 
- [gastownhall/beads](https://crossaitools.com/plugins/gastownhall-beads): Beads - A memory upgrade for your coding agent
- [kepano/obsidian-skills](https://crossaitools.com/plugins/kepano-obsidian-skills): Agent skills for Obsidian. Teach your agent to use Markdown, Bases, JSON Canvas, and use the CLI.
- [dailydotdev/daily](https://crossaitools.com/plugins/dailydotdev-daily): daily.dev is a professional network for developers to learn, collaborate, and grow together 👩🏽‍💻 👨‍💻
- [OthmanAdi/planning-with-files](https://crossaitools.com/plugins/othmanadi-planning-with-files): Claude Code skill implementing Manus-style persistent markdown planning — the workflow pattern behind the $2B acquisition.
- [K-Dense-AI/claude-scientific-skills](https://crossaitools.com/plugins/k-dense-ai-claude-scientific-skills): A set of ready to use Agent Skills for research, science, engineering, analysis, finance and writing.
- [jarrodwatts/claude-hud](https://crossaitools.com/plugins/jarrodwatts-claude-hud): A Claude Code plugin that shows what's happening - context usage, active tools, running agents, and todo progress
- [VoltAgent/awesome-claude-code-subagents](https://crossaitools.com/plugins/voltagent-awesome-claude-code-subagents): A collection of 100+ specialized Claude Code subagents covering a wide range of development use cases
- [pbakaus/impeccable](https://crossaitools.com/plugins/pbakaus-impeccable): The design language that makes your AI harness better at design.
- [muratcankoylan/Agent-Skills-for-Context-Engineering](https://crossaitools.com/plugins/muratcankoylan-agent-skills-for-context-engineering): A comprehensive collection of Agent Skills for context engineering, multi-agent architectures, and production agent systems. Use when building, optimizing, or debugging agent systems that require effe
- [JimLiu/baoyu-skills](https://crossaitools.com/plugins/jimliu-baoyu-skills): Skills shared by Baoyu for improving daily work efficiency

## Common questions

**Q: What is a Claude Code skill?**
A: A SKILL.md file (markdown with frontmatter) that instructs Claude Code on how to perform a specific task — generating a component, running a workflow, applying a convention. Skills are installed with `npx skills add <owner/repo>` and become available as slash commands or implicit guidance.

**Q: How do I install a skill?**
A: Run `npx skills add <owner/repo>` in the project where you want it. The skill is added to `.claude/skills/`. Restart your Claude Code session to pick it up.

**Q: What is a plugin marketplace?**
A: A GitHub repository with a `.claude-plugin/marketplace.json` file that lists plugins. Subscribe with `/plugin marketplace add <owner/repo>` inside Claude Code, then install any plugin from that registry.

**Q: How do I add an MCP server?**
A: Run `claude mcp add --transport stdio <name> <command>` for stdio MCP servers, or `claude mcp add --transport http <name> <url>` for HTTP servers. The server's tools become available in your session.

**Q: How is this site different from GitHub search?**
A: GitHub search returns repositories. This directory adds editorial summaries, votes, comments, category curation, and cross-linking between skills, plugins, and MCP servers — surfacing the relationships GitHub doesn't model.

**Q: How do I list my own skill, plugin, or MCP server?**
A: Publish it on GitHub with the proper structure (`SKILL.md`, `.claude-plugin/marketplace.json`, or an MCP server config). The daily discovery job picks it up automatically. No submission form required.

**Q: Is the catalog complete?**
A: It covers all publicly-discoverable Claude Code extensions on GitHub above the quality threshold. Newly published items appear within ~24 hours of the next discovery run.

**Q: How can I advertise to Claude Code developers?**
A: See https://crossaitools.com/advertise. Sponsorships are flat-fee monthly with no auctions; up to 8 sponsors at a time. Machine-readable pricing at https://crossaitools.com/pricing.md.

## Other resources

- [Short index](https://crossaitools.com/llms.txt): Shorter LLM index file (top items only, no Q&A).
- [Sitemap](https://crossaitools.com/sitemap.xml): All indexable URLs, refreshed daily.
- [Robots](https://crossaitools.com/robots.txt): Crawl rules. All major AI bots are explicitly allowed.
- [Contact](mailto:hi@crossaitools.com): Email the maintainer.