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Found 8,964 Skills
A guide to creating efficient Skills. Use this skill when users need to create a new skill (or update an existing one) to extend Claude's capabilities through expertise, workflows, or tool integrations.
Accessibility testing for web applications using Playwright (@playwright/test) with TypeScript and axe-core. Use when asked to write, run, or debug automated accessibility checks, keyboard navigation tests, focus management, ARIA/semantic validations, screen reader compatibility, or WCAG 2.1 Level AA compliance testing. Covers axe-core integration, POUR principles (perceivable, operable, understandable, robust), color contrast, form labels, landmarks, and accessible names.
Test-Driven Development workflow with session integration. Use when implementing features/bugfixes to enforce RED-GREEN-REFACTOR discipline. Integrates with session-management for enhanced TDD session tracking, checkpoints, and metrics.
Automatically discover life science APIs online, create ToolUniverse tools, validate them, and prepare integration PRs. Performs gap analysis to identify missing tool categories, web searches for APIs, automated tool creation using devtu-create-tool patterns, validation with devtu-fix-tool, and git workflow management. Use when expanding ToolUniverse coverage, adding new API integrations, or systematically discovering scientific resources.
Help with Stripe payment integration in Next.js projects. Use when implementing checkout flows, subscriptions, webhooks, customer portal, or debugging payment issues. Covers Stripe SDK usage, webhook verification, and subscription management.
Patterns for physics-based simulation including numerical integration, rigid body dynamics, fluid simulation, finite element methods, and multi-physics coupling. Covers accuracy, stability, and performance. Use when ", " mentioned.
Create a minimal working PostHog example. Use when starting a new PostHog integration, testing your setup, or learning basic PostHog API patterns. Trigger with phrases like "posthog hello world", "posthog example", "posthog quick start", "simple posthog code".
Design effective MCP tools and Claude Code integrations using the consolidation principle. Fewer, better-designed tools dramatically improve agent success rates. Use when creating MCP servers, designing tool interfaces, optimizing tool sets, or when user mentions 'tool design', 'MCP', 'fewer tools', 'tool consolidation', 'tool architecture', or 'tool optimization'.
Execute firebase platform expert with Vertex AI Gemini integration for Authentication, Firestore, Storage, Functions, Hosting, and AI-powered features. Use when asked to "setup firebase", "deploy to firebase", or "integrate vertex ai with firebase". Trigger with relevant phrases based on skill purpose.
Threat modeling methodologies (STRIDE, DREAD), attack trees, threat modeling as code, and integration with SDLC for proactive security design
Build modern documentation websites with Docusaurus. Covers docs, blog, pages, versioning, i18n, search integration, and deployment patterns. React-based with MDX support for interactive documentation.
Request Interceptor Creator - Auto-activating skill for API Integration. Triggers on: request interceptor creator, request interceptor creator Part of the API Integration skill category.