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R 4.4+ development specialist covering tidyverse, ggplot2, Shiny, and data science patterns. Use when developing data analysis pipelines, visualizations, or Shiny applications.

Ruby 3.3+ development specialist covering Rails 7.2, ActiveRecord, Hotwire/Turbo, and modern Ruby patterns. Use when developing Ruby APIs, web applications, or Rails projects.

Scala 3.4+ development specialist covering Akka, Cats Effect, ZIO, and Spark patterns. Use when building distributed systems, big data pipelines, or functional programming applications.

Swift 6+ development specialist covering SwiftUI, Combine, Swift Concurrency, and iOS patterns. Use when building iOS apps, macOS apps, or Apple platform applications.

Enterprise Mermaid diagramming skill for Claude Code using MCP Playwright. Use when creating architecture diagrams, flowcharts, sequence diagrams, or visual documentation.

Moai Lib Shadcn Ui - Professional implementation guide

Chrome Extension Manifest V3 development specialist covering service workers, content scripts, message passing, chrome.* APIs, side panel, declarativeNetRequest, permissions model, and Chrome Web Store publishing. Use when building browser extensions, implementing content

Domain-Driven Development workflow specialist using ANALYZE-PRESERVE-IMPROVE cycle for behavior-preserving code transformation

Enhanced Just-In-Time document loading system that intelligently discovers, loads, and caches relevant documentation based on user intent and project context. Use when users need specific documentation, when working with new technologies, when answering domain-specific

Ralph Engine - Automated feedback loop with LSP diagnostics and AST-grep integration for continuous code quality improvement. Use when implementing error-driven development, automated fixing, or continuous quality validation workflows.

Integrated project management system with documentation, language initialization, and template optimization modules. Use when setting up projects, generating documentation, configuring multilingual support, or optimizing templates.

SPEC workflow orchestration with EARS format, requirement clarification, and Plan-Run-Sync integration for MoAI-ADK development methodology

Enterprise template management with code boilerplates, feedback templates, and project optimization workflows

Comprehensive development workflow specialist combining DDD testing, debugging, performance optimization, code review, PR review, and quality assurance into unified development workflows

Git worktree management for parallel SPEC development with isolated workspaces, automatic registration, and seamless MoAI-ADK integration

Master Material Design 3 and Jetpack Compose patterns for building native Android apps. Use when designing Android interfaces, implementing Compose UI, or following Google's Material Design guidelines.

Mobile-first design and engineering doctrine for iOS and Android apps. Covers touch interaction, performance, platform conventions, offline behavior, and mobile-specific decision-making. Teaches principles and constraints, not fixed layouts. Use for React Native, Flutter, or

Develop React Native, Flutter, or native mobile apps with modern architecture patterns. Masters cross-platform development, native integrations, offline sync, and app store optimization. Use PROACTIVELY for mobile features, cross-platform code, or app optimization.

Mobile game development principles. Touch input, battery, performance, app stores.

Master iOS Human Interface Guidelines and SwiftUI patterns for building native iOS apps. Use when designing iOS interfaces, implementing SwiftUI views, or ensuring apps follow Apple's design principles.

Expert in secure mobile coding practices specializing in input validation, WebView security, and mobile-specific security patterns. Use PROACTIVELY for mobile security implementations or mobile security code reviews.

Interactive setup wizard for Minitap mobile-use SDK. USE WHEN user wants to set up mobile automation, configure mobile-use SDK, connect iOS or Android devices, or create a new mobile testing project.

Mock Generator - Auto-activating skill for Test Automation.\nTriggers on: mock generator, mock generator\nPart of the Test Automation skill category.

Spin up a mock REST API server from JSON files in seconds. Full CRUD, filtering, pagination. Zero config. Free CLI tool for frontend developers.

Generate mock API servers for testing and development with realistic response data.\nUse when creating mock APIs for development and testing.\nTrigger with phrases like \

Take moderator actions on users - ban, mute, remove content, manage leaderboard eligibility. Use when you need to ban a user, mute them, or take other moderation actions.

Run Python code in the cloud with serverless containers, GPUs, and autoscaling. Use when deploying ML models, running batch processing jobs, scheduling compute-intensive tasks, or serving APIs that require GPU acceleration or dynamic scaling.

Serverless GPU cloud platform for running ML workloads. Use when you need on-demand GPU access without infrastructure management, deploying ML models as APIs, or running batch jobs with automatic scaling.

Generate Eloquent model for CatchAdmin module with full CatchModel features.

Automatically appends the model alias to the end of every response with integrated hook functionality and configuration change detection.\nUse when transparency about which model generated each response is needed.\n\nUse when: providing model transparency, tracking which model

Model Checkpoint Manager - Auto-activating skill for ML Training.\nTriggers on: model checkpoint manager, model checkpoint manager\nPart of the ML Training skill category.

Compare 3D CAD models using boolean operations (IoU, Dice, precision/recall). Use when evaluating generated models against gold references, diffing CAD revisions, or computing similarity metrics for ML training. Triggers on: model diff, compare models, IoU, intersection over

Debug and diagnose model errors in Pollinations services. Analyze logs, find error patterns, identify affected users. For taking action on user tiers, see tier-management skill.

Model Drift Detector - Auto-activating skill for ML Deployment.\nTriggers on: model drift detector, model drift detector\nPart of the ML Deployment skill category.

Build model evaluation metrics operations. Auto-activating skill for ML Training.\nTriggers on: model evaluation metrics, model evaluation metrics\nPart of the ML Training skill category. Use when working with model evaluation metrics functionality. Trigger with phrases like \

Add, update, or remove text/image/video models. Handles any provider.

Merge multiple fine-tuned models using mergekit to combine capabilities without retraining. Use when creating specialized models by blending domain-specific expertise (math + coding + chat), improving performance beyond single models, or experimenting rapidly with model

Reduce LLM size and accelerate inference using pruning techniques like Wanda and SparseGPT. Use when compressing models without retraining, achieving 50% sparsity with minimal accuracy loss, or enabling faster inference on hardware accelerators. Covers unstructured pruning,

Model Registry Manager - Auto-activating skill for ML Deployment.\nTriggers on: model registry manager, model registry manager\nPart of the ML Deployment skill category.

A comprehensive AI model routing system that automatically selects the optimal model for any task. Set up multiple AI providers (Anthropic, OpenAI, Gemini, Moonshot, Z.ai, GLM) with secure API key storage, then route tasks to the best model based on task type, complexity, and

Use CodexBar CLI local cost usage to summarize per-model usage for Codex or Claude, including the current (most recent) model or a full model breakdown. Trigger when asked for model-level usage/cost data from codexbar, or when you need a scriptable per-model summary from

This skill enables Claude to design NoSQL data models. It activates when the user requests assistance with NoSQL database design, including schema creation, data modeling for MongoDB or DynamoDB, or defining document structures. Use this skill when the user mentions \

Master ES6+ features including async/await, destructuring, spread operators, arrow functions, promises, modules, iterators, generators, and functional programming patterns for writing clean, efficient JavaScript code. Use when refactoring legacy code, implementing modern

Configures Python projects with modern tooling (uv, ruff, ty). Use when creating projects, writing standalone scripts, or migrating from pip/Poetry/mypy/black.

Problem-solving strategies for modular arithmetic in graph number theory

Modular Code Organization

Train Mixture of Experts (MoE) models using DeepSpeed or HuggingFace. Use when training large-scale models with limited compute (5× cost reduction vs dense models), implementing sparse architectures like Mixtral 8x7B or DeepSeek-V3, or scaling model capacity without proportional

Microsoft Ops Gadget — CLI for Microsoft 365 (Mail, Calendar, Drive, Contacts, Tasks, Word, PowerPoint, Excel, OneNote).