Skill catalog

Build 2D games with Phaser 3 framework. Covers scene lifecycle, sprites, physics (Arcade/Matter), tilemaps, animations, input handling, and game architecture. Trigger: "create phaser game", "add phaser scene", "phaser s…

Use when writing or reviewing Kotlin coroutine scope ownership, raw Thread or Executor work, init launches, non-suspending launch APIs, runBlocking, cancellation, StateFlow, SharedFlow, Channel, stateIn, SharingStarted,…

Configures ESLint and Prettier for consistent code quality with TypeScript, React, and modern best practices. Use when users request "ESLint setup", "Prettier config", "linting configuration", "code formatting", or "lin…

Expert guidance for PHP 8+ development with SOLID principles, PSR standards, and modern best practices

Applies QML best practices when producing or working with QML source code. Use whenever QML code is the primary subject: writing, reviewing, fixing, refactoring, optimizing, or debugging QML files, components, or bindin…

Use when writing or debugging State Tree logic in Unreal Engine C++ — tasks, conditions, evaluators, considerations, schemas, transitions, events or Mass behaviours. Also use when the user mentions 'StateTree', 'state t…

FPGA development guidelines covering Vivado, SystemVerilog, timing closure, AXI interfaces, and hardware optimization.

Core coding rules and workflow for developing VTEX FastStore storefronts. Use when starting any FastStore development task, writing TypeScript/React components, creating section overrides, extending the BFF, or styling.…

Use when offloading work off the game thread, dispatching results back to it, running data-parallel loops, or scheduling timers and tickers in UE C++. Also use when the user mentions 'UE::Tasks::Launch', 'FPipe', 'FTask…

This skill should be used when the user asks to "configure Biome", "extend biome config", "set up BiomeJS", "add biome overrides", "biome lint-staged", "fix biome errors", or mentions biome.jsonc, Biome linting, or Biom…

SystemVerilog development guidelines for FPGA and ASIC design covering modular design, verification, and timing optimization.

Use when writing, reviewing, or committing code to enforce Karpathy's 4 coding principles — surface assumptions before coding, keep it simple, make surgical changes, define verifiable goals. Triggers on "review my diff"…

TypeScript/JavaScript code quality with ESLint, Biome, and strict TypeScript. Covers linting, formatting, type safety, and best practices. USE WHEN: user works with "TypeScript", "JavaScript", "ESLint", "Biome", asks ab…

Write idiomatic Effect v4 TypeScript following official best practices from effect-solutions and the Effect source. Use when writing, reviewing, or refactoring Effect code: services (ServiceMap.Service), layers and depe…

Guidelines for developing with Drizzle ORM, a lightweight type-safe TypeScript ORM with SQL-like syntax

Systematically debug issues using graph-powered code navigation

Use when choosing a logging approach, configuring slog, writing structured log statements, or deciding log levels in Go. Also use when setting up production logging, adding request-scoped context to logs, or migrating f…

Use when writing or reviewing Kotlin code that stores CoroutineScope, launches from init/non-suspending APIs, calls runBlocking, or catches broad exceptions around suspend calls.

Zod v4 best practices, patterns, and API guidance for schema validation, parsing, error handling, and type inference in TypeScript applications. Covers safeParse, object composition, refinements, transforms, codecs, bra…

Expert in Prisma ORM with type-safe database operations and schema design

How to build desktop applications with GPUI Kit, the Rust framework published as the gpui-kit crate (GPUI plus gpui_kit::component, gpui_kit::base, gpui_kit::assets). Use when setting up a gpui-kit app, choosing or usin…

Use when writing or reviewing Kotlin Flow state and event APIs with StateFlow, MutableStateFlow.update, SharedFlow, Channel, stateIn, SharingStarted, .value, receiveAsFlow, one-shot events, or sentinel initial values.

Migrate Kotlin (and Java) code from kotlinx.collections.immutable 0.3.x / 0.4.x to the latest 0.5.x. The 0.5.x line renames every copy-returning method on PersistentList / PersistentMap / PersistentSet / PersistentColle…

SuiteScript records and fields reference. Look up field IDs, types, required status, and search capabilities for all 272 NetSuite record types. Use this when building SuiteScript to ensure correct field usage.

Tinybird TypeScript SDK for defining datasources, pipes, and queries with full type inference. Use when working with @tinybirdco/sdk, TypeScript Tinybird projects, or type-safe data ingestion and queries.

Generate code using nx generators. INVOKE IMMEDIATELY when user mentions scaffolding, setup, structure, creating apps/libs, or setting up project structure. Trigger words - scaffold, setup, create a new app, create a ne…

Use when organizing functions within a Go file, formatting function signatures, designing return values, or following Printf-style naming conventions. Also use when a user is adding or refactoring any Go function, even…

Use when deciding whether to use Go generics, writing generic functions or types, choosing constraints, or picking between type aliases and type definitions. Also use when a user is writing a utility function that could…

Guidelines for implementing Clean Architecture patterns in Flutter and Go applications, with emphasis on separation of concerns, dependency rules, and testability.

Expert guidance for the SAS programming language - DATA step, PROC SQL, macro language, formats, ODS, and common procedures. Pure SAS syntax only, no SASjs-framework content. Use when writing, reviewing, or debugging .s…

UdonSharp scripting skill for VRChat SDK 3.10.5 (active and verified target). Use when writing, reviewing, debugging, or migrating UdonSharp C# and UdonBehaviour code. Positive triggers include UdonSharp, NetworkCallabl…

Use when declaring or initializing Go variables, constants, structs, or maps — including var vs :=, reducing scope with if-init, formatting composite literals, designing iota enums, and using any instead of interface{}.…

33+ essential JavaScript concepts every developer should know, inspired by [33-js-concepts](https://github.com/leonardomso/33-js-concepts).

Use when writing or reviewing Jetpack Compose parameter stability, compiler reports, skippability, unstable UI state classes, collection parameters, or Kotlin 2.0+ strong skipping behavior.

Use when writing or reviewing Jetpack Compose code with bare local var in a @Composable, remember { mutableStateOf(...) }, mutableStateListOf/mutableStateMapOf, or @ReadOnlyComposable.

Use when Jetpack Compose code reads scroll, animation, gesture, or other frame-rate State in composition, passes changing values across composable boundaries, uses value-form layout/draw modifiers, or back-writes observ…

Explains the mental model and architecture of the code under `packages/core`. You MUST use this skill any time you plan to work with code in `packages/core`

This skill should be used when analyzing technical debt in a codebase, documenting code quality issues, creating technical debt registers, or assessing code maintainability. Use this for identifying code smells, archite…

Explains the mental model and architecture of the code under `packages/forms/signals`. You MUST use this skill any time you plan to work with code in `packages/forms/signals`

当需要开始与当前工作区隔离的功能开发，或在执行实现计划之前使用——通过原生工具或 git worktree 回退机制确保隔离工作区存在

Create conventional commit messages following best conventions. Use when committing code changes, writing commit messages, or formatting git history. Follows conventional commits specification.

Use when the user needs to create, extract, flatten, list, test, install, script, or troubleshoot `tzst` CLI workflows for `.tzst` or `.tar.zst` archives, including compression levels, streaming mode, extraction filters…