Developer Tools & Repos Agent Skills for ChatGPT

Skills for testing Android devices and emulators on Windows/OpenCode. Control devices using ADB, PowerShell, UIAutomator, and screenshots…

Implements high-performance, maintainable Android user interfaces using Jetpack Compose best practices and architectural patterns.

Master Material Design 3 and Jetpack Compose patterns for building native Android apps.

Expert guidance on Android native development — Kotlin idioms, Jetpack Compose UI, Room database, Hilt dependency injection, Coroutines…

Automatically generates standardized, architecture-aware Android unit tests using MockK and Coroutines based on your implementation code.

Angular development patterns including modules, components, services, dependency injection, signals, and enterprise architecture.

Use when generating animated game sprites, creating sprite sheets, building character animations for 2D games, or needing consistent…

Configure a local development workflow for Anthropic Claude API projects.

Implement Claude API reference architectures for common use cases.

Create or evaluate an architecture decision record (ADR).

Expert in React Native environment setup and configuration.

Three.js shaders - GLSL, ShaderMaterial, uniforms, custom effects.

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

Engineering lead — hand Apex any task and it routes internally.

System takeover — take ownership of an existing codebase or inherited system.

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

Analyze API changes for backward compatibility with breaking change detection and consumer impact assessment

API contract validation and breaking change detection

API Design knowledge base. Provides REST constraints, Richardson Maturity Model, HTTP semantics, content negotiation, and GraphQL/gRPC…

Design, evolve, review, and verify production HTTP APIs.

This skill should be used when reviewing API designs, auditing REST or gRPC endpoints, designing backend APIs, evaluating BFF…