Development

Tracking player behavior and game performance through metrics, event tracking, funnel analysis, retention metrics, and integration with analytics platforms for data-driven game development.

how to approach tests, types and coverage

Add, review, or update GA4 event tracking on HTML websites using data attributes and a reusable JavaScript tracker. Use when wiring gtag or GTM dataLayer events, choosing event names/parameters, or extending a base GA4 tracking snippet for clicks and simple interactions.

Server-rendered Go UI framework. Use when building g-sui applications, creating UI components, handling forms with server actions, using data tables, setting up routes, or implementing WebSocket patches. Triggered by "g-sui", "server-rendered UI", "Go UI framework", form handling, or data collation.

Scrapes relevant bulletins from the RBI website intelligently and figures out information about government securities issued. Applicable only for India.

This skill should be used when importing Foundry classes, registering sheets, loading templates, enriching HTML, or using any Foundry API that has moved to namespaces. Covers compat wrappers, deferred sheet registration, and the modern-first fallback pattern.

This skill should be used when the user asks to "migrate to V13", "upgrade to Foundry V13", "update module for V13", "fix V13 compatibility", "convert to ESM", "use DataModel", or mentions V13-specific patterns like hook signature changes, actor.system vs actor.data.data, or Application V2. Provides comprehensive Foundry VTT V13 development patterns and migration guidance.

This skill should be used when implementing multiplayer synchronization, using game.socket.emit/on, creating executeAsGM patterns for privileged operations, broadcasting events between clients, or avoiding common pitfalls like race conditions and duplicate execution.

This skill should be used when creating or extending ActorSheet/ItemSheet classes, implementing getData or _prepareContext, binding events with activateListeners, handling drag/drop, or migrating from ApplicationV1 to ApplicationV2. Covers both legacy V1 and modern V2 patterns.

This skill should be used when adding features that update actors or items, implementing hook handlers, modifying update logic, or replacing embedded documents. Covers ownership guards, no-op checks, batched updates, queueUpdate wrapper, atomic document operations, and letting Foundry handle renders automatically for multi-client sync.

This skill should be used when registering hooks, creating custom hooks for module APIs, debugging hook execution, handling async in hooks, or preventing memory leaks from unclean hook removal. Covers Hooks.on/once/call/callAll, lifecycle order, and common pitfalls.

This skill should be used when adding error handling to catch blocks, standardizing error handling across a codebase, or ensuring proper UX with user messages vs technical logs. Covers NotificationOptions, Hooks.onError, and preventing console noise.

This skill should be used when implementing dice rolling, creating Roll formulas, sending rolls to chat with toMessage, preparing getRollData, creating custom dice types, or handling roll modifiers like advantage/disadvantage. Covers Roll class, evaluation, and common patterns.

This skill should be used when choosing between flags, settings, or files for data storage, implementing document flags, registering module settings, handling file uploads, or migrating data between storage types. Covers namespacing, scope types, and performance optimization.

This skill should be used when moving data between storage locations, changing data structures, renaming fields, or removing deprecated data. Covers schema versioning, safe migration methods, the Foundry unset operator, and idempotent migrations.

Creating fuzz driver for Python libraries using LibFuzzer. This skill is useful when agent needs to work with creating fuzz drivers / fuzz targets for Python project and libraries.

Building effective fuzzing harnesses to maximize code coverage and vulnerability discovery through automated input generation

FuseCore Modular Architecture - Laravel 12 modular monolith with auto-discovery, React integration, and SOLID principles. Use when creating modules, understanding FuseCore structure, or implementing features in FuseCore projects.

Use this skill when you need information about `@funstack/static` (the React framework your app is built with). What it is even about, API references, best practices, etc.

Generate Unsloth training notebooks and scripts. Use when the user wants to create a training notebook, configure fine-tuning parameters, or set up SFT/DPO/GRPO training.

Core JavaScript fundamentals including variables, data types, operators, control flow, and basic syntax. Essential foundation for all JavaScript development.

Apply SOLID, DRY, KISS, YAGNI, and SSOT principles when writing, reviewing, or refactoring code to ensure maintainability and quality.

Advanced function patterns including declaration styles, closures, scope chains, hoisting, and this binding. Master function composition and advanced techniques.

Validates that code actually works through sandbox testing, execution verification, and systematic debugging. Use this skill after code generation or modification to ensure functionality is genuine rather than assumed. The skill creates isolated test environments, executes code with realistic inputs, identifies bugs through systematic analysis, and applies best practices to fix issues without breaking existing functionality. This ensures code delivers its intended behavior reliably.