Claude Skills by lev-os

Prevents macOS sleep using caffeinate/pmset and Caffeine.app.

21 production-ready scripts for iOS app testing, building, and automation. Provides semantic UI navigation, build automation, accessibility testing, and simulator lifecycle management. Optimized for AI agents with minimal token output.

Expert in macOS Accessibility APIs (AXUIElement) for desktop automation. Specializes in secure automation of macOS applications with proper TCC permissions, element discovery, and system interaction. HIGH-RISK skill requiring strict security controls.

[WHAT] Build animated SwiftUI orbs — Siri-style mesh gradients, particle spheres, and AI assistant visualizers. [HOW] 7 compositing techniques (MeshGradient, Canvas particles, Metal shaders, layer rotation, angular glow, hue-shift, animated masks) with code patterns and performance rules. [WHEN] Use when building or modifying animated orb UIs, voice chat visualizers, AI thinking indicators, Siri-style glows, particle effects, or the Kingly Clawd avatar. [WHY] Animated orbs require precise lay...

Run Lean-Rust proof feedback loops to find runtime bugs. Use when proving theorems, triaging hard proof blockers, checking conformance, or closing formal assurance gaps.

Design agent-friendly MCP servers with optimal UX. Use when building MCP tools, designing agent APIs, writing tool documentation, implementing error handling, or creating multi-agent coordination systems.

Complete toolkit for senior architect with modern tools and best practices.

This skill provides guidance for quality focused software development and architecture. It is based on Clean Architecture and Domain Driven Design principles.

Use when learning or applying the TLA+ ecosystem end-to-end: selecting VS Code, Toolbox, or CLI; choosing PlusCal vs raw TLA+; writing specs above the code level; structuring properties and cfg files; running SANY, TLC, Apalache, or TLAPS; debugging counterexamples; checking refinement; validating traces; or mining the official examples corpus.

Find and buy a domain for the current Convex app through Convex, then bind it (labs; spend action).

Check the current app's pinned Convex components against recommended versions and upgrade them behind a build gate.

Publish the current Convex app to a live *.convex.app URL (deploy backend + upload web build).

Create Mermaid diagrams (activity, deployment, sequence, architecture) from text descriptions or source code. Use when asked to "create a diagram", "generate mermaid", "document architecture", "code to diagram", "create design doc", or "convert code to diagram". Supports hierarchical on-demand guide loading, Unicode semantic symbols, and Python utilities for diagram extraction and image conversion.

Build FrankenSuite project websites matching frankentui.com quality. Use when creating a new FrankenSuite website, adding pages/sections, or adapting the design system for a different project.

Build showcase-grade FrankenTUI screens. Use when working in ftui-demo-showcase, diagnosing TUI issues with doctor_frankentui, polishing TUI UX, or replacing placeholder interfaces.

Generate GitHub social preview images (1280x640 PNG) via iterative vision-guided refinement. Use when: social preview, GitHub share image, OG image for repo, social card, gh_share_image, preview image.

Build interactive visualizations for Next.js (SVG, Canvas, Three.js, Framer Motion). Use when creating diagrams, animations, simulations, or data visualizations.

Build and debug production Metal shaders for Apple platforms, including SwiftUI stitchable effects, MPS usage, and real-time GPU performance practices.

Create OpenGraph and Twitter share images for Next.js applications using next/og ImageResponse. Generates dynamic social preview cards with gradients, SVG icons, and proper dimensions. Use when building OG images, Twitter cards, social previews, meta images, or share images for webapps.

[WHAT] Character design and illustration assistant for AI product mascots, orb avatars, and animated companions. [HOW] Generates text-to-image prompts, character reference sheets, animation state matrices, Lottie motion specs, and SwiftUI animation parameters. Uses "nano banana" quick-render mode for rapid 5-sample concept exploration. [WHEN] Use when designing mascots, avatars, orb characters, animated blobs, onboarding animations, emote sheets, or character state systems. Triggers on: "char...

Build an immersive scroll-scrubbed "fly through the world" landing page for any industry or brand using Higgsfield. As the visitor scrolls, a pre-rendered camera flies from outside each scene into its interior, then flows on to the next scene with NO cuts — one continuous connected flight (Emons-style isometric diorama world, or any art direction you pick). The skill interviews the user for the topic, the story beats/sections, and brand kit, then generates cohesive scenes + seamless camera cl...

Query and retrieve Superdesign prompt-library entries (style prompts, layout prompts, and component prompts) from a local JSONL export. Use when you need reusable UI prompt building blocks or want to extract all prompts for a style/category/slug. Triggers: "superdesign", "design prompt", "prompt library", "style prompt", "layout prompt", "mosaic"

Expert guidance on Swift Concurrency best practices, patterns, and implementation. Use when developers mention: (1) Swift Concurrency, async/await, actors, or tasks, (2) "use Swift Concurrency" or "modern concurrency patterns", (3) migrating to Swift 6, (4) data races or thread safety issues, (5) refactoring closures to async/await, (6) @MainActor, Sendable, or actor isolation, (7) concurrent code architecture or performance optimization, (8) concurrency-related linter warnings (SwiftLint or ...

Choose the right Swift game/VFX stack across SpriteKit, RealityKit, Metal, GameplayKit, and community engines with practical architecture and performance guidance.

This skill provides comprehensive guidance for implementing advanced SwiftUI animations, transitions, matched geometry effects, and Metal shader integration. Use when building animations, view transitions, hero animations, or GPU-accelerated effects in SwiftUI apps for iOS and macOS.

Write, review, or improve SwiftUI code following best practices for state management, view composition, performance, modern APIs, Swift concurrency, and iOS 26+ Liquid Glass adoption. Use when building new SwiftUI features, refactoring existing views, reviewing code quality, or adopting modern SwiftUI patterns.

Implement, review, or improve SwiftUI features using the iOS 26+ Liquid Glass API. Use when asked to adopt Liquid Glass in new SwiftUI UI, refactor an existing feature to Liquid Glass, or review Liquid Glass usage for correctness, performance, and design alignment.

Audit and improve SwiftUI runtime performance from code review and architecture. Use for requests to diagnose slow rendering, janky scrolling, high CPU/memory usage, excessive view updates, or layout thrash in SwiftUI apps, and to provide guidance for user-run Instruments profiling when code review alone is insufficient.

Best practices and example-driven guidance for building SwiftUI views and components. Use when creating or refactoring SwiftUI UI, designing tab architecture with TabView, composing screens, or needing component-specific patterns and examples.

Records terminal UIs with VHS and deterministic snapshots. Use when debugging TUI rendering, reproducing visual regressions, or sharing keyboard-driven UI behavior.

Iterative UI/UX polishing for Stripe-level visual quality. Use when app already works and looks decent, wanting to elevate to world-class through multiple passes. Not for complete overhauls.

Comprehensive design guide for web and mobile applications. Contains 50+ styles, 97 color palettes, 57 font pairings, 99 UX guidelines, and 25 chart types across 9 technology stacks. Searchable database with priority-based recommendations.

Systematic UX evaluation using Nielsen heuristics and accessibility checks. Use when reviewing UI, "is this usable", improving user experience, or pre-launch.

Build game-quality spell VFX on Apple platforms with practical recipes for smoke, lightning, particles, bloom, layering, and stable 60fps performance.

Design cohesive Next.js SaaS admin cockpits. Use when building or expanding `/admin` and `/api/admin` with unified IA, permissions, audit, analytics, ops, moderation, billing, and user-management.

Develop Android apps with Jetpack Compose and Material 3. Use for Kingly Android app development, theming, UI components, and catching up to iOS/macOS feature parity.

Replace Tokio Rust stacks with Asupersync. Use when migrating tokio/axum/hyper/tonic apps, designing native Cx/region-based services, or debugging Asupersync internals.

> Fast, modern JavaScript/TypeScript development with the Bun runtime.

Rebuild CHANGELOG.md files and release histories from git, tags, releases, and issue trackers. Use when writing changelogs, version timelines, or agent-facing project history summaries.

> **CRITICAL SKILL** - Be **concise, direct, and solution-focused**. ---

Review this plan thoroughly before making any code changes. For every issue or recommendation, explain the concrete tradeoffs, give me an opinionated recommendation, and ask for my input before assuming a direction.

Systematically explore unfamiliar codebases to build working mental models. Use when onboarding to new project, "what does this do", or understanding legacy code.

Domain-parameterized codebase auditing (security, UX, performance, API, copy, CLI). Use when auditing code, assessing quality, finding issues, or pre-launch review.

Mine patterns that recur across multiple projects and generalize into reusable artifacts. Use when "I've seen this before", DRY across repos, or building shared libraries.

Produce reusable technical architecture documents from codebase exploration. Use when onboarding, "write up what this does", architecture docs, or handoff.

Convex backend skill for CLI operations, MCP integration, Agent Component setup, deploy-key auth, and agent-safe development workflows.

Use when running, planning, or discussing database migrations, schema changes, or data transformations against any environment

Complete guide for integrating frankensearch hybrid search into Rust projects. Covers fresh integration, fixing stalled/buggy integrations, and migrating from ad-hoc search. Use when: frankensearch, hybrid search, two-tier search, TwoTierSearcher, IndexBuilder, EmbedderStack, RRF fusion, semantic search integration, search migration, search broken, search stalled.

Debug running processes with GDB, strace, and /proc inspection. Use when: process hang, spin loop, segfault, crash, backtrace, attach debugger, ptrace, core dump, thread starvation, accept loop, deadlock, busy wait, or diagnose why a process is stuck.

**Status:** PRODUCTION-READY **Type:** Review/Validation **Persona:** Harsh Critic **Use Case:** Pre-release repository pressure testing ---