Claude Code Skills · page 75

Clojure language-specific patterns, data-first modeling, REPL-driven development, and spec

Domain modeling with algebraic data types, smart constructors, and type-level error handling

F# language-specific patterns, Railway-Oriented Programming, and Computation Expressions

Haskell language-specific patterns, GADTs, type classes, and effect systems

Hexagonal architecture patterns with pure core and side-effect shell for functional codebases

Kotlin language-specific patterns with Arrow, Raise DSL, and coroutine-based effects

Core functional programming thinking patterns and type system foundations, language-agnostic

Scala 3 language-specific patterns with ZIO, Cats Effect, and opaque types

Naming conventions, API ergonomics, and usability patterns for functional code

5-layer agent output validation, I/O contract specification, vertical slice development, and test doubles policy with per-layer examples

Git change frequency hotspot analysis — find the most-changed files in your codebase

Infrastructure as Code patterns (Terraform, Kubernetes), observability design (SLOs, metrics, alerting, dashboards), and pipeline security stages. Load when designing infrastructure, observability, or security scanning.

Mom Test questioning toolkit, JTBD analysis, interview conduct, assumption testing framework, and hypothesis design

Evidence collection methods, problem categorization, analysis techniques, and solution design patterns

JTBD methodology for extracting real jobs behind feature requests — job statements, abstraction layers, first-principles extraction, ODI outcome statements, and opportunity scoring

Translating JTBD analysis to BDD scenarios - job story to Given-When-Then patterns, forces-based test discovery, job-map-based test discovery, and property-shaped criteria

Core JTBD theory and job story format - job dimensions, job story template, job stories vs user stories, 8-step universal job map, outcome statements, and forces of progress

JTBD discovery techniques adapted for AI product owner context. Four Forces extraction, job dimension probing, question banks, and anti-patterns for interactive feature discovery conversations.

JTBD opportunity scoring and prioritization - outcome statement format, opportunity algorithm, scoring interpretation, feature prioritization, and opportunity matrix template

JTBD workflow classification and routing - ODI two-phase framework, five job types with workflow sequences, baseline type selection, workflow anti-patterns, and common recipes

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A skill for writing natural and valuable comments on Reddit communities. Includes the complete workflow from subreddit exploration, comment writing, review, posting, to tracking.

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Create distinctive, production-grade frontend interfaces with high design quality. Use this skill when the user asks to build web components, pages, artifacts, posters, or applications (examples include websites, landing pages, dashboards, React components, HTML/CSS layouts, or when styling/beautifying any web UI). Generates creative, polished code and UI design that avoids generic AI aesthetics.

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You MUST use this before any creative work - creating features, building components, adding functionality, or modifying behavior. Explores user intent, requirements and design before implementation.

Comprehensive research agent for in-depth investigation. Use when users ask for deep research, comprehensive analysis, market research, academic surveys, competitive analysis, technology trends, or any topic requiring 100+ source verification. Triggers on requests like "investigate", "research", "analyze", "create a report", "comprehensive report", "deep dive", "thorough analysis".

UI/UX design intelligence expert for web and mobile applications. Use when designing interfaces, selecting color palettes, typography, visual styles, building landing pages, dashboards, or reviewing code for UX issues. Covers 50+ design styles, 97 color palettes, 57 font pairings, 99 UX guidelines, 25 chart types across 9 tech stacks (React, Next.js, Vue, Svelte, SwiftUI, React Native, Flutter, Tailwind, shadcn/ui).

Scrape, crawl, and extract data from websites. Use when users ask to scrape web pages, extract content, crawl websites, or collect data from the internet.

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Grill me about specs for the workflows I want to build, within this workspace.

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