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Found 3,333 Skills
Expert senior-level Go guidance for architecture, API-first design/codegen, advanced concurrency, performance tuning, testing/quality, cloud-native 12-factor practices, and Go 1.24+ tooling for large-scale systems.
Write persuasive copy for landing pages, emails, ads, sales pages, and marketing materials. Use when you need to write headlines, CTAs, product descriptions, ad copy, email sequences, or any text meant to drive action. Covers copywriting formulas (AIDA, PAS, FAB), headline writing, emotional triggers, objection handling in copy, and A/B testing. Trigger on "write copy", "copywriting", "landing page copy", "headline", "write a sales page", "ad copy", "email copy", "persuasive writing", "how to write [marketing text]".
Comprehensive testing and validation strategies for spec-driven development. Learn phase-specific validation techniques, quality gates, and testing approaches to ensure high-quality implementation.
Use when building, refactoring, debugging, or testing iOS/macOS features using The Composable Architecture (TCA). Covers feature structure, effects, dependencies, navigation patterns, and testing with TestStore.
Generates comprehensive unit tests with AAA pattern (Arrange-Act-Assert), edge cases, error scenarios, and coverage analysis. Creates test files matching source structure with complete test suites. Use for "unit testing", "test generation", "Jest tests", or "test coverage".
Use when testing Ralph's hat collection presets, validating preset configurations, or auditing the preset library for bugs and UX issues.
Execute ArkTS-Sta code snippets and files via the Playground HTTP API. Use this for testing ArkTS syntax, learning ArkTS features, verifying code logic, or demonstrating code execution results.
Provides comprehensive guidance for JUnit testing framework including test annotations, assertions, test lifecycle, and best practices. Use when the user asks about JUnit, needs to write Java unit tests, use JUnit annotations, or configure JUnit for Java projects.
Modern JavaScript/TypeScript testing with Vitest including mocking and coverage.
Expert guidance on TYPO3 Workspaces: versioning, staging, publishing workflows, file limitations, query migration, debugging, and testing. Use when working with workspace, versioning, staging, publishing, review, draft content, workflow.
Use when you have implemented an equivariant model and need to verify it correctly respects the intended symmetries. Invoke when user mentions testing model equivariance, debugging symmetry bugs, verifying implementation correctness, checking if model is actually equivariant, or diagnosing why equivariant model isn't working. Provides verification tests and debugging guidance.
Use when making predictions or judgments under uncertainty and need to explicitly update beliefs with new evidence. Invoke when forecasting outcomes, evaluating probabilities, testing hypotheses, calibrating confidence, assessing risks with uncertain data, or avoiding overconfidence bias. Use when user mentions priors, likelihoods, Bayes theorem, probability updates, forecasting, calibration, or belief revision.