Developer Tools & Repos Agent Skills for Claude Code

jank-lang: native Clojure on LLVM with seamless C++ interop.

Multiplayer game development principles.

Three.js scene setup, cameras, renderer, Object3D hierarchy, coordinate

Three.js materials - PBR, basic, phong, shader materials, material properties.

Three.js post-processing - EffectComposer, bloom, DOF, screen effects.

Create 3D scenes, interactive experiences, and visual effects using Three.js.

Use when building, configuring, or debugging enterprise Java applications with Spring Boot 3.x, microservices, or reactive programming.

Use when you need to view the source code of a Java class from project dependencies, understand a library's API implementation, find…

Use this skill to develop or debug Java applications

Java development. Use for Java, Spring Boot, Maven, Gradle, JPA, Hibernate.

This skill should be used when working with Java 17+ language features outside the Spring layer: records, sealed classes, Optional, Stream…

Master Java 21+ with modern features like virtual threads, pattern matching, and Spring Boot 3.x.

High-performance Entity Component System for Luau/roblox-ts.

Provides expert guidance on designing efficient Entity Component System (ECS) architectures using Jecs for Roblox development.

JEngine Editor UI component library with theming.

API and backend code review — REST conventions, auth, validation, error handling, pagination, rate limiting, test coverage.

Build a new production-ready service from scratch — config management, health checks, graceful shutdown, structured logging.

Produce a complete firmware architecture spec for a described device — layer diagram, module responsibilities, HAL interface definitions…

Mobile audit — app size, startup time, crash reporting, store compliance, accessibility, offline behavior.

Produce a mobile feature spec — user story, technical approach, component breakdown, platform-specific considerations, edge cases.

Mobile reconnaissance — understand the app's tech stack, architecture, dependencies, and health for takeover.