• anthropics/docx - Create, edit, and analyze Word documents
• anthropics/doc-coauthoring - Collaborative document editing and co-authoring
• anthropics/pptx - Create, edit, and analyze PowerPoint presentations
• anthropics/xlsx - Create, edit, and analyze Excel spreadsheets
• anthropics/pdf - Extract text, create PDFs, and handle forms
• anthropics/algorithmic-art - Create generative art using p5.js with seeded randomness
• anthropics/canvas-design - Design visual art in PNG and PDF formats
• anthropics/frontend-design - Frontend design and UI/UX development tools
• anthropics/slack-gif-creator - Create animated GIFs optimized for Slack size constraints
• anthropics/theme-factory - Style artifacts with professional themes or generate custom themes
• anthropics/web-artifacts-builder - Build complex claude.ai HTML artifacts with React and Tailwind
• anthropics/mcp-builder - Create MCP servers to integrate external APIs and services
• anthropics/webapp-testing - Test local web applications using Playwright
• anthropics/brand-guidelines - Apply Anthropic’s brand colors and typography to artifacts
• anthropics/internal-comms - Write status reports, newsletters, and FAQs
• anthropics/skill-creator - Guide for creating skills that extend Claude’s capabilities
• anthropics/template - Basic template for creating new skills

Official skills by VoltAgent for building AI agents with the VoltAgent TypeScript framework.

• voltagent/create-voltagent - Project setup guide with CLI and manual steps
• voltagent/voltagent-best-practices - Architecture and usage patterns for agents, workflows, memory, and servers
• voltagent/voltagent-core-reference - Reference for the VoltAgent class options and lifecycle methods
• voltagent/voltagent-docs-bundle - Lookup embedded docs from @voltagent/core for version-matched documentation

Official skills by the SerpApi team — the Web Search API for AI apps. They give agents structured, machine-readable search data through 130+ engines, from Google web and Scholar to Maps, Flights, Hotels, and Shopping.

• serpapi/serpapi-web-search - Structured search data via 130+ engines: pick the right engine, extract the right keys, recover from errors
• serpapi/agent-usability-test - Test whether agents can discover and use your tool — the subject under test is the interface, not the agent

More from SerpApi (not skills, but they pair with them):

• serpapi/serpapi-search-tools-python - Real-time search tools for Python agents with native support for popular agent SDKs
• serpapi/serpapi-cli - SerpApi client for the command line, covering all 130+ engines

Official skills by the Crawlbase team that give AI agents live web access through the Crawlbase MCP server: crawl any URL as raw HTML, clean Markdown, or a screenshot, and manage results in Crawlbase Cloud Storage.

• crawlbase/crawl-html - Crawl a URL and return its raw HTML with JS rendering, device emulation, and geo-targeting
• crawlbase/crawl-markdown - Extract clean, LLM-ready Markdown from any URL, stripped of ads and boilerplate
• crawlbase/crawl-screenshot - Take full-page or viewport screenshots of any URL on desktop or mobile
• crawlbase/storage-get - Retrieve a stored page from Crawlbase Cloud Storage as JSON, HTML, or Markdown
• crawlbase/storage-list - List stored rids with scroll-based pagination, up to 1000 per call
• crawlbase/storage-bulk-get - Retrieve up to 100 stored pages in one call, with optional auto-delete
• crawlbase/storage-count - Count the documents held in Crawlbase Cloud Storage for a token
• crawlbase/storage-delete - Delete a single stored page from Crawlbase Cloud Storage by rid
• crawlbase/storage-bulk-delete - Delete up to 100 stored pages from Crawlbase Cloud Storage in one call

More from Crawlbase (not skills, but they pair with them):

• crawlbase/crawlbase-mcp - The MCP server behind these skills (npm @crawlbase/mcp) with JS rendering, proxy rotation, and anti-bot protection
• crawlbase/langchain-crawlbase - LangChain document loader, tool, and retriever backed by the Crawling API
• crawlbase/n8n-nodes-crawlbase - Native Crawlbase node for n8n with credentials and Crawling API options

Production-grade Agent Skills for every major test automation framework, maintained by the TestMu AI (formerly LambdaTest) team. They help AI coding assistants generate expert-level test automation code across web, mobile, API, BDD, and unit testing stacks.

• testmu-ai/api-skill - Suite of API skills for designing, mocking, documenting, securing, and generating tests for REST/GraphQL/gRPC APIs
• testmu-ai/appium-skill - Generate Appium mobile automation for Android and iOS in Java, Python, or JS
• testmu-ai/behat-skill - Generate Behat BDD tests for PHP with Gherkin and Mink
• testmu-ai/behave-skill - Generate Behave BDD tests for Python with Gherkin and step implementations
• testmu-ai/capybara-skill - Generate Capybara E2E tests in Ruby with RSpec integration
• testmu-ai/cicd-pipeline-skill - Generate CI/CD pipelines for tests on GitHub Actions, Jenkins, GitLab CI, and Azure DevOps
• testmu-ai/codeception-skill - Generate Codeception acceptance, functional, and unit tests in PHP
• testmu-ai/cucumber-skill - Generate Cucumber BDD tests with Gherkin and step definitions in Java, JS, or Ruby
• testmu-ai/cypress-skill - Generate Cypress E2E and component tests in JavaScript or TypeScript
• testmu-ai/detox-skill - Generate Detox gray-box E2E tests for React Native apps in JavaScript
• testmu-ai/espresso-skill - Generate Espresso UI tests for Android apps in Kotlin or Java
• testmu-ai/flutter-testing-skill - Generate Flutter widget, integration, and golden tests in Dart
• testmu-ai/gauge-skill - Generate Gauge specs in Markdown with steps in Java, Python, JS, or Ruby
• testmu-ai/geb-skill - Generate Geb browser automation in Groovy with Spock and page objects
• testmu-ai/hyperexecute-skill - Operate TestMu AI HyperExecute end-to-end: YAML, CLI runs, debugging, and CI wiring
• testmu-ai/jasmine-skill - Generate Jasmine BDD tests in JavaScript with spies and async support
• testmu-ai/jest-skill - Generate Jest unit and integration tests in JS/TS with mocking and snapshots
• testmu-ai/junit-5-skill - Generate JUnit 5 unit and integration tests in Java with Mockito
• testmu-ai/kanecli-skill - Generate and run browser tests from natural-language objectives via kane-cli
• testmu-ai/karma-skill - Generate Karma test-runner configs for browser-based JS testing
• testmu-ai/laravel-dusk-skill - Generate Laravel Dusk Chrome-based browser tests in PHP
• testmu-ai/lettuce-skill - Generate Lettuce BDD tests for Python (legacy; prefer Behave)
• testmu-ai/mocha-skill - Generate Mocha tests in JavaScript with Chai and Sinon
• testmu-ai/mstest-skill - Generate MSTest tests in C# for .NET
• testmu-ai/nemojs-skill - Generate Nemo.js Selenium-based tests for Node.js
• testmu-ai/nightwatchjs-skill - Generate NightwatchJS E2E tests in JavaScript with Selenium WebDriver
• testmu-ai/nunit-skill - Generate NUnit 3 tests in C# with the constraint model and Moq
• testmu-ai/phpunit-skill - Generate PHPUnit tests in PHP with data providers and mocking
• testmu-ai/playwright-skill - Generate Playwright E2E tests in TS, JS, Python, Java, or C#
• testmu-ai/protractor-skill - Generate Protractor E2E tests for Angular in JS/TS (deprecated; prefer Playwright/Cypress)
• testmu-ai/puppeteer-skill - Generate Puppeteer scripts for browser automation, scraping, and PDF generation
• testmu-ai/pytest-skill - Generate pytest tests in Python with fixtures, parametrize, and mocking
• testmu-ai/reqnroll-skill - Generate Reqnroll BDD tests for web and mobile in C#
• testmu-ai/robot-framework-skill - Generate Robot Framework keyword-driven tests in Python
• testmu-ai/rspec-skill - Generate RSpec tests in Ruby with matchers, hooks, and mocking
• testmu-ai/selenide-skill - Generate Selenide UI tests in Java with auto-waits and a fluent API
• testmu-ai/selenium-skill - Generate Selenium WebDriver tests in Java, Python, JS, C#, Ruby, or PHP
• testmu-ai/serenity-bdd-skill - Generate Serenity BDD tests in Java with the Screenplay pattern and reporting
• testmu-ai/smartui-skill - Generate SmartUI visual regression configs for screenshot comparison
• testmu-ai/specflow-skill - Generate SpecFlow BDD tests for C#/.NET with Gherkin and step bindings
• testmu-ai/test-framework-migration-skill - Migrate tests between Selenium, Playwright, Puppeteer, and Cypress
• testmu-ai/testcafe-skill - Generate TestCafe automation tests in JavaScript or TypeScript
• testmu-ai/testng-skill - Generate TestNG tests in Java with data providers and parallel execution
• testmu-ai/testunit-skill - Generate Test::Unit xUnit-style tests in Ruby
• testmu-ai/unittest-skill - Generate Python unittest tests with TestCase and setUp/tearDown
• testmu-ai/vitest-skill - Generate Vitest tests in JS/TS with a Jest-compatible API and ESM
• testmu-ai/webdriverio-skill - Generate WebdriverIO (WDIO) automation tests in JavaScript or TypeScript
• testmu-ai/xcuitest-skill - Generate XCUITest UI tests for iOS/iPadOS apps in Swift
• testmu-ai/xunit-skill - Generate xUnit.net tests in C# with Fact/Theory and FluentAssertions

• modem-dev/skills - Agent skills from Modem, starting with write-discoverable-code

• zero/zero - Discover and call external paid tools for Claude Code agents instead of stopping to ask the user to sign up or fetch an API key
• zero/zero-gemini - Same Zero tool-discovery and payment layer packaged as a Gemini CLI extension

• angular/angular-developer - Generate Angular code and architectural guidance for components, services, reactivity
• angular/angular-new-app - Create new Angular apps using CLI with modern best practices

• composiohq/composio - Connect AI agents to 1000+ external apps with managed authentication

• supabase/postgres-best-practices - PostgreSQL best practices for Supabase

• google-gemini/gemini-api-dev - Best practices for developing Gemini-powered apps using the Gemini API
• google-gemini/vertex-ai-api-dev - Developing Gemini-powered apps on Google Cloud Vertex AI using the Gen AI SDK
• google-gemini/gemini-live-api-dev - Building real-time bidirectional streaming apps with the Gemini Live API
• google-gemini/gemini-interactions-api - Building apps with the Gemini Interactions API for text, chat, streaming, and image generation