Skill UI

This meta-skill audits, refactors, and standardizes the structure of existing skill definition files (SKILL.md). It ensures compliance with defined style guides, enforces best practices (Hard Rules, Decision Gates), and improves the overall quality and maintainability of LLM-based skills.

This skill enables applying John Ousterhout's design principles to reduce complexity in software systems. It guides decisions on module boundaries, API design, information hiding, and abstraction depth. Use it when refactoring shallow interfaces or managing cognitive load during development. Ideal for architects and senior engineers optimizing system structure and ensuring maintainable codebases through proper abstraction layers.

Apply Martin Fowler-inspired refactoring rules to improve existing code structure while preserving observable behavior. Covers code smells, small safe refactoring steps, test-backed cleanup, and separating refactoring from feature changes.

This skill applies Refactoring.Guru-inspired rules for diagnosing code smells and selecting appropriate refactoring techniques. It helps preserve behavior while avoiding uncontrolled redesign. Before making design or code decisions, read the mini rules first. Use the full guide only as a deeper reference when needed. It ensures targeted cleanup without over-engineering.

This skill assists in constructing or auditing formal models for the Journal of Systems Engineering. It ensures consistency among system boundaries, variables, constraints, objectives, and information structures. It guides users to define actors, timing, and assumptions rigorously, checking for identifiability and solvability before submission.

Design, implement, review, or refactor native macOS 27 Golden Gate interfaces in SwiftUI or AppKit. Ensures apps match Apple's current macOS 27 UI kit with restrained Liquid Glass language, integrated windows, full-height sidebars, native toolbars, flat lists, and clear pane boundaries. Ideal for Figma design-to-code work and audits of boxed interfaces.

This skill allows delegating self-contained coding tasks to assistants like Codex or Claude Code via non-interactive background processes. It supports feature development, code review, and refactoring. Use OpenSquilla's exec_command and process tools to manage sessions, poll output, and send inputs without blocking the main workflow. Ideal for tasks requiring substantial file exploration.

A set of behavioral guidelines derived from Andrej Karpathy's observations to help users writing, reviewing, or refactoring code with Large Language Models (LLMs). It guides developers to avoid overcomplication, make surgical changes, explicitly surface assumptions, and define verifiable success criteria, promoting clean, simple, and robust code development.

This skill provides a comprehensive guide for optimizing Angular applications. It covers performance bottlenecks, bundle size reduction, and rendering efficiency. Use it when writing, reviewing, or refactoring Angular code to ensure optimal speed and load times.

Create, modify, debug and deploy Apify Actors with the apify CLI. Covers template selection in JS/TS/Python, input/output schemas, runtime logic, local testing, secrets handling and secure deployment.

Converts existing software into reusable serverless Apify Actors packaged as Docker images with JSON input/output schemas, local testing, and deployment workflows.

Use Apify Actors to extract follower demographics, engagement patterns, and audience behavior from Facebook, Instagram, YouTube, and TikTok, then summarize insights or export bounded CSV/JSON results.