Claude Skills by sickn33

Use when encountering any bug, test failure, or unexpected behavior, before proposing fixes

Use when implementing any feature or bugfix, before writing implementation code

Complete App Store Optimization (ASO) toolkit for researching, optimizing, and tracking mobile app performance on Apple App Store and Google Play Store

Guidelines for creating API routes in Expo Router with EAS Hosting

Helps understand and write EAS workflow YAML files for Expo projects. Use this skill when the user asks about CI/CD or workflows in an Expo or EAS context, mentions .eas/workflows/, or wants help with EAS build pipelines or deployment automation.

Deploy Expo apps to production with EAS — build and submit to the iOS App Store, Google Play Store, and TestFlight, configure eas.json build and submit profiles, manage app versions and build numbers, publish App Store metadata and ASO, and deploy web bundles and API routes via EAS...

Build Expo app for development

Set up Tailwind CSS v4 in Expo with react-native-css and NativeWind v5 for universal styling

Production-ready patterns for React Native development with Expo, including navigation, state management, native modules, and offline-first architecture.

API design principles and decision-making. REST vs GraphQL vs tRPC selection, response formats, versioning, pagination.

Build secure, scalable authentication and authorization systems using industry-standard patterns and modern best practices.

You are a senior backend engineer operating production-grade services under strict architectural and reliability constraints. Use when routes, controllers, services, repositories, express middleware, or prisma database access.

Database design principles and decision-making. Schema design, indexing strategy, ORM selection, serverless databases.

Build reliable, fast, and maintainable end-to-end test suites that provide confidence to ship code quickly and catch regressions before users do.

Build React components, implement responsive layouts, and handle client-side state management. Masters React 19, Next.js 15, and modern frontend architecture.

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

Master Stripe payment processing integration for robust, PCI-compliant payment flows including checkout, subscriptions, webhooks, and refunds.

2D game development principles. Sprites, atlases, tilemaps, physics, cameras, and genre patterns (platformer, top-down). Use for canvas/Phaser/Kaplay/Pixi 2D games or guest viewports inside hybrid web apps.

3D game development principles. Rendering, shaders, physics, cameras.

Algorithmic philosophies are computational aesthetic movements that are then expressed through code. Output .md files (philosophy), .html files (interactive viewer), and .js files (generative algorithms).

Game audio principles. Sound design, music integration, adaptive audio systems.

Game design principles. GDD structure, balancing, player psychology, progression.

Master Godot 4 GDScript patterns including signals, scenes, state machines, and optimization. Use when building Godot games, implementing game systems, or learning GDScript best practices.

Build Unity games with optimized C# scripts, efficient rendering, and proper asset management. Masters Unity 6 LTS, URP/HDRP pipelines, and cross-platform deployment.

Expert patterns for Algolia search implementation, indexing strategies, React InstantSearch, and relevance tuning

Designs event-driven architectures, webhook systems, API chaining flows, ETL pipelines, and integration patterns between services. Use whenever the user asks about webhooks, event streaming, API composition, connecting two or more APIs, building pipelines, Pub/Sub, Kafka topics, ETL...

Expert patterns for HubSpot CRM integration including OAuth authentication, CRM objects, associations, batch operations, webhooks, and custom objects. Covers Node.js and Python SDKs.

Expert patterns for Plaid API integration including Link token flows, transactions sync, identity verification, Auth for ACH, balance checks, webhook handling, and fintech compliance best practices.

Master Stripe payment processing integration for robust, PCI-compliant payment flows including checkout, subscriptions, webhooks, and refunds.

Build communication features with Twilio: SMS messaging, voice calls, WhatsApp Business API, and user verification (2FA). Covers the full spectrum from simple notifications to complex IVR systems and multi-channel authentication.

Strategies for managing LLM context windows including summarization, trimming, routing, and avoiding context rot

Expert in Langfuse - the open-source LLM observability platform. Covers tracing, prompt management, evaluation, datasets, and integration with LangChain, LlamaIndex, and OpenAI. Essential for debugging, monitoring, and improving LLM applications in production.

Production-ready patterns for building LLM applications, inspired by [Dify](https://github.com/langgenius/dify) and industry best practices.

Master comprehensive evaluation strategies for LLM applications, from automated metrics to human evaluation and A/B testing.

Caching strategies for LLM prompts including Anthropic prompt caching, response caching, and CAG (Cache Augmented Generation)

RAG (Retrieval-Augmented Generation) implementation workflow covering embedding selection, vector database setup, chunking strategies, and retrieval optimization.

'CRITICAL: Use for Makepad getting started and app structure. Triggers on:

'CRITICAL: Use for Makepad packaging and deployment. Triggers on:

'CRITICAL: Use for Makepad event and action handling. Triggers on:

'CRITICAL: Use for Makepad layout system. Triggers on:

'CRITICAL: Use for Makepad shader system. Triggers on:

Version: makepad-widgets (dev branch) | Last Updated: 2026-01-19 > > Check for updates: https://crates.io/crates/makepad-widgets

Structured guide for setting up A/B tests with mandatory gates for hypothesis, metrics, and execution readiness.

Design, audit, and improve analytics tracking systems that produce reliable, decision-ready data.

Professional-grade brand voice analysis, SEO optimization, and platform-specific content frameworks.

Plan a content strategy, topic clusters, editorial roadmap, and content mix for traffic, authority, and lead generation. Use when deciding what to publish, what topics to prioritize, or how to structure a content program.

You are an expert in email marketing and automation. Your goal is to create email sequences that nurture relationships, drive action, and move people toward conversion.

Design and evaluate programmatic SEO strategies for creating SEO-driven pages at scale using templates and structured data.

Diagnose and audit SEO issues affecting crawlability, indexation, rankings, and organic performance.

Complete App Store Optimization (ASO) toolkit for researching, optimizing, and tracking mobile app performance on Apple App Store and Google Play Store