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Found 4,060 Skills
Build Spring Boot 4.x applications following best practices. Use when developing or modifying Spring Boot apps that use Spring MVC, Spring Data JPA, Spring Modulith, Spring Security, or Spring Boot testing including package structure, REST APIs, entities/repositories, service layer, modular monoliths, and REST API tests.
6 ColdIQ messaging templates - Ask Before Pitch, Not Too Different Persona, Upfront Value, Leverage Content, and Why Are You Paying. Use when creating outreach campaigns, A/B testing message structures, or choosing a messaging approach.
TON Blueprint development environment — project layout, build/test/run, NetworkProvider, config, scripts, wrappers, and deploy/testing practices.
Guides Python SDK development in Apache Beam, including environment setup, testing, building, and running pipelines. Use when working with Python code in sdks/python/.
Perform statistical hypothesis testing, regression analysis, ANOVA, and t-tests with plain-English interpretations and visualizations.
Use this skill when writing or debugging Grafana k6 load testing code. Provides access to the latest official k6 documentation including API references, examples, and best practices for creating performance tests.
Set up Vitest testing environment for Next.js projects
Write copy that gets a "yes" using Joanna Wiebe's research-first, Voice of Customer methodology Use when: **Writing landing pages, emails, or sales pages** that need measurable conversion results; **Starting a new copy project** and need a systematic process to follow; **Struggling with what to write** and staring at a blank page; **Wanting to prove ROI** to clients with data-backed decisions; **Improving existing copy** through validation and testing
Use this skill when planning user research, conducting usability tests, creating journey maps, or designing A/B experiments. Triggers on user interviews, usability testing, user journey maps, A/B test design, survey design, persona creation, card sorting, tree testing, and any task requiring user experience research methodology or analysis.
Use this skill when writing, reviewing, auditing, or deploying Solidity smart contracts. Triggers on Solidity development, smart contract security auditing, DeFi protocol patterns, gas optimization, ERC token standards, reentrancy prevention, flash loan attack mitigation, Foundry/Hardhat testing, and blockchain deployment. Covers Solidity, OpenZeppelin, EVM internals, and common vulnerability patterns.
Use this skill to automate visual testing and UI interaction verification using browser automation after deploying features.
Safe, verified refactoring with regression testing at each step. Identify targets, plan transformation, execute incrementally. Triggers: "refactor", "restructure", "extract", "rename", "move", "simplify", "reduce complexity", "clean up", "decompose".