social-media-analyzer

database-advanced-optimization

williamzujkowski

Use SQL (PostgreSQL) when:

cloudflare-browser-rendering

mrgoonie

Guide for implementing Cloudflare Browser Rendering - a headless browser automation API for screenshots, PDFs, web scraping, and testing. Use when automating browsers, taking screenshots, generating PDFs, scraping dynamic content, extracting structured data, or testing web applications. Supports REST API, Workers Bindings (Puppeteer/Playwright), MCP servers, and AI-powered automation. (project)

sql-optimization-patterns

wshobson

Master SQL query optimization, indexing strategies, and EXPLAIN analysis to dramatically improve database performance and eliminate slow queries. Use when debugging slow queries, designing database schemas, or optimizing application performance.

unit-test-bean-validation

giuseppe-trisciuoglio

Unit testing Jakarta Bean Validation (@Valid, @NotNull, @Min, @Max, etc.) with custom validators and constraint violations. Test validation logic without Spring context. Use when ensuring data integrity and validation rules are correct.

unit-test-mapper-converter

giuseppe-trisciuoglio

Unit tests for mappers and converters (MapStruct, custom mappers). Test object transformation logic in isolation. Use when ensuring correct data transformation between DTOs and domain objects.

senior-data-scientist

alirezarezvani

World-class data science skill for statistical modeling, experimentation, causal inference, and advanced analytics. Expertise in Python (NumPy, Pandas, Scikit-learn), R, SQL, statistical methods, A/B testing, time series, and business intelligence. Includes experiment design, feature engineering, model evaluation, and stakeholder communication. Use when designing experiments, building predictive models, performing causal analysis, or driving data-driven decisions.

raffle-winner-picker

Prat011

Picks random winners from lists, spreadsheets, or Google Sheets for giveaways, raffles, and contests. Ensures fair, unbiased selection with transparency.

grey-haven-testing-strategy

greyhaven-ai

Grey Haven's testing strategy - Vitest unit/integration/e2e for TypeScript, pytest markers for Python, >80% coverage requirement, fixture patterns, and Doppler for test environment variables. Use when writing tests or setting up test infrastructure.

unit-testing

williamzujkowski

Unit testing standards following TDD methodology, test pyramid principles, and comprehensive coverage practices. Covers pytest, Jest, mocking, fixtures, and CI integration for reliable test suites.

Testing Strategies

bejranonda

Provides test design patterns, coverage strategies, and best practices for comprehensive test suite development

regex-visual-debugger

OneWave-AI

Debug regex patterns with visual breakdowns, plain English explanations, test case generation, and flavor conversion. Use when user needs help with regular expressions or pattern matching.

territory-planning-optimizer

OneWave-AI

Account assignment by revenue potential, geography, relationship. Workload balancing, TAM/SAM calculation, coverage models.