This skill provides comprehensive PostHog analytics integration patterns for web and backend applications. It covers installation for Next.js, React, Python, and Node.js, along with best practices for user identification, event tracking conventions, feature flags, A/B testing, and creating project-specific dashboards for SaaS, e-commerce, and content applications.

This skill provides comprehensive guidance for end-to-end testing with Playwright. It covers Page Object Model patterns, authentication handling, cross-browser testing, network mocking, visual testing, and CI/CD integration with GitHub Actions.

A comprehensive guide for building Node.js backend applications using Express or Fastify. It covers project structure, API design with dependency injection, error handling patterns, database repositories with transactions, configuration management, and testing strategies for both unit and integration tests.

A comprehensive guide for building Microsoft Teams bots and AI agents. Covers Teams SDK v2, integration with OpenAI and Claude LLMs, Microsoft Graph API for accessing user data and Teams channels, Adaptive Cards for rich UI, RAG with Azure AI Search, and deployment to Azure Bot Service.

This skill provides comprehensive documentation and code examples for building headless e-commerce applications with Medusa. It covers project setup, custom API routes, modules, workflows, event subscribers, scheduled jobs, admin UI customization, and deployment strategies.

A comprehensive guide for building AI-first applications using LLMs. Covers project structure, typed LLM client patterns, prompt versioning, testing strategies (mocks, fixtures, evaluations), CI/CD integration for LLM tests, and cost/performance tracking. Focuses on the principle of using LLMs for logic and traditional code for infrastructure.

This skill provides comprehensive documentation and code examples for integrating Klaviyo's email and SMS marketing platform. It covers customer profile management, event tracking, campaign automation, list management, and webhook handling with examples in TypeScript and Python.

This skill provides structured templates and best practices for iterative test-driven development using the Ralph Wiggum loop plugin. It guides Claude through self-referential development cycles where the AI iterates on code until tests pass, with clear completion criteria and error classification to distinguish between fixable code issues and environment blockers.

A comprehensive guide for integrating Google Gemini CLI into your code review workflow. Covers installation, authentication options, interactive and headless usage modes, and CI/CD integration with GitHub Actions and GitLab. Leverages Gemini 2.5 Pro's 1M token context window for analyzing large codebases.

A comprehensive Flutter development guide covering Riverpod state management, Freezed data models, go_router navigation, and mocktail testing. Provides project structure templates, code patterns, CI/CD configuration, and common anti-patterns to avoid.

A comprehensive reference guide for Firebase development covering Firestore data modeling, real-time listeners, security rules, authentication flows, Cloud Functions, and TypeScript SDK patterns. Provides code examples and best practices for web and mobile applications.

Guides developers through analyzing existing repositories to understand their structure, conventions, and tech stack. Provides step-by-step instructions for setting up development guardrails like pre-commit hooks, linters, formatters, and commit message validation without disrupting existing patterns.

This skill helps prevent database-related coding errors by establishing a mandatory workflow where Claude reads schema files before writing any database code. It provides type generation commands for popular ORMs (Drizzle, Prisma, Supabase, SQLAlchemy) and includes verification checklists to ensure column names, types, and relationships are correct.

A credential management skill that helps users load API keys from a centralized access file (like ~/Documents/Access.txt) and automatically configure project environments. It recognizes key formats from 15+ services including OpenAI, Anthropic, Stripe, AWS, and GitHub, validates credentials via API calls, and creates properly secured .env files.

A developer workflow skill that helps maintain clean git history through atomic commits, manageable PR sizes, and clear commit messages. Provides thresholds, bash script templates, and Claude integration patterns for suggesting when to commit during development sessions.

This skill provides comprehensive documentation for using OpenAI's Codex CLI to perform automated code reviews. It covers installation, authentication, interactive and headless usage modes, and includes ready-to-use CI/CD integration examples for GitHub Actions, GitLab CI, and Jenkins pipelines.

A comprehensive code review skill that enforces automated code reviews before commits and deployments. It supports multiple AI engines (Claude, OpenAI Codex, Google Gemini) and provides integration patterns for pre-commit hooks and GitHub Actions CI/CD pipelines.

A methodology skill that helps prevent semantic code duplication by maintaining a CODE_INDEX.md capability index. It provides guidelines for checking existing code before writing new functions, documenting files and functions properly, and periodically auditing for duplicate functionality.

A comprehensive guide for building serverless applications with Cloudflare D1 SQLite database. Covers project setup, Drizzle ORM integration, migration workflows, query patterns, local development, and multi-environment deployment strategies.

Base defines universal coding patterns, strict complexity limits (20 lines/function, 200 lines/file), and enforces Test-Driven Development workflows. It provides templates for atomic todos, bug tracking, session management, and automatically triggers iterative TDD loops for non-trivial tasks.

This skill provides comprehensive guidance for working with Azure Cosmos DB, covering partition key design, CRUD operations, consistency levels, batch operations, change feed processing, and cost optimization. It includes code examples for both TypeScript and Python SDKs.

A comprehensive reference skill for AWS DynamoDB development. Provides guidance on single-table design patterns, GSI strategies, TypeScript SDK v3 and Python boto3 code examples, batch operations, transactions, and local development setup with DynamoDB Local.

A comprehensive reference guide for AWS Aurora database development. Covers connection strategies (RDS Proxy, Data API, direct connections), serverless v2 configuration, Prisma ORM integration, connection pooling, migrations, monitoring, and security best practices including IAM authentication.

A comprehensive reference guide for Android Kotlin development covering project structure, Gradle configuration, Coroutines with Flow, Jetpack Compose UI patterns, Hilt dependency injection, and MockK testing. Includes anti-patterns to avoid and CI/CD configuration examples.

Provides comprehensive Android Java development guidance covering MVVM architecture, ViewBinding patterns, Activity/Fragment lifecycle management, unit testing with Mockito, instrumentation testing with Espresso, and GitHub Actions CI/CD configuration. Includes best practices for avoiding common Android anti-patterns like memory leaks and context leaks.

This skill provides a quick reference guide for the latest AI models across major providers. It includes model IDs, pricing comparisons, usage examples, and selection recommendations for tasks like text generation, code completion, image generation, voice synthesis, and embeddings.

A comprehensive guide for building autonomous AI agents using Pydantic AI (Python) and Claude Agent SDK (Node.js). Covers agent architecture, tool design, multi-agent coordination, memory management, guardrails, and testing patterns with practical code examples.

This skill teaches content creators how to write for AI Engine Optimization (AEO) - structuring content so AI assistants cite your brand in answers. It provides page templates, semantic triple patterns, content cluster architecture, and schema markup examples to improve visibility in ChatGPT, Claude, Perplexity, and Google AI Overviews.

This skill provides troubleshooting guides and setup instructions for configuring ccproxy and LiteLLM proxy integration. It helps users resolve common connection issues, configure environment variables, and verify proxy health without any executable code.

Fetch content from Reddit using Gemini CLI when WebFetch is blocked. Use when accessing Reddit URLs, researching topics on Reddit, or when Reddit returns 403/blocked errors. (user)