What's on the bench.
Variant Analysis
Find similar vulnerabilities and bugs across codebases using pattern-based analysis. Use when hunting bug variants, building CodeQL/Semgrep queries, analyzing security vulnerabilities, or performing systematic code audits after finding an initial issue.
Uxui Principles
Evaluate interfaces against 168 research-backed UX/UI principles, detect antipatterns, and inject UX context into AI coding sessions.
UX Persuasion Engineer
One sentence - what this skill does and when to invoke it
UX Flow
Design user flows and screen structure using StyleSeed UX patterns such as progressive disclosure, hub-and-spoke navigation, and information pyramids.
UX Feedback
Add loading, empty, error, and success feedback states to StyleSeed components and pages with practical mobile-first rules.
UX Copy
Generate UX microcopy in StyleSeed's Toss-inspired voice for buttons, empty states, errors, toasts, confirmations, and form guidance.
UX Audit
Audit screens against Nielsen's heuristics and mobile UX best practices using the StyleSeed Toss design language as the implementation context.
Uv Package Manager
Comprehensive guide to using uv, an extremely fast Python package installer and resolver written in Rust, for modern Python project management and dependency workflows.
Using Superpowers
Use when starting any conversation - establishes how to find and use skills, requiring Skill tool invocation before ANY response including clarifying questions
Using Neon
Neon is a serverless Postgres platform that separates compute and storage to offer autoscaling, branching, instant restore, and scale-to-zero. It's fully compatible with Postgres and works with any language, framework, or ORM that supports Postgres.
Using Git Worktrees
Git worktrees create isolated workspaces sharing the same repository, allowing work on multiple branches simultaneously without switching.
User Thoughts
Persist user decisions and project constraints to mdbase across sessions. Trigger on /user-thoughts or /ustht, or when the user discusses architecture, tech stack, rules, UI/UX, or project memory.
Upstash Qstash
Upstash QStash expert for serverless message queues, scheduled jobs, and reliable HTTP-based task delivery without managing infrastructure.
Unsplash Integration
Integration skill for searching and fetching high-quality, free-to-use professional photography from Unsplash.
Unslop
Post-process AI-generated text through the unslop CLI to strip AI writing patterns before publishing
Unship
Compare AI agent-made UI variants locally in a real app, then keep one and clean up unused temporary code.
Unreal Engine Cpp Pro
Expert guide for Unreal Engine 5.x C++ development, covering UObject hygiene, performance patterns, and best practices.
Unity Ecs Patterns
Production patterns for Unity's Data-Oriented Technology Stack (DOTS) including Entity Component System, Job System, and Burst Compiler.
Unity Developer
Build Unity games with optimized C# scripts, efficient rendering, and proper asset management. Masters Unity 6 LTS, URP/HDRP pipelines, and cross-platform deployment.
Unity AI Game Creator
Transform raw game ideas into complete Unity projects with AI-powered asset generation, scene blueprints, music/SFX prompts, and step-by-step development procedures using Unity 6+ and modern AI tools.
Unit Testing Test Generate
Generate comprehensive, maintainable unit tests across languages with strong coverage and edge case focus.
Uniprot Database
Direct REST API access to UniProt. Protein searches, FASTA retrieval, ID mapping, Swiss-Prot/TrEMBL. For Python workflows with multiple databases, prefer bioservices (unified interface to 40+ services). Use this for direct HTTP/REST work or UniProt-specific control.
Uncle Bob Craft
Use when performing code review, writing or refactoring code, or discussing architecture; complements clean-code and does not replace project linter/formatter.
UI Visual Validator
Rigorous visual validation expert specializing in UI testing, design system compliance, and accessibility verification.