Developer Tools & Repos Agent Skills for Claude Desktop

Implement 2D browser games with Phaser. Use when the user wants a Phaser, TypeScript, and Vite stack for scenes, gameplay systems…

Backend development guide for the Phoenix AI observability platform (Strawberry GraphQL, SQLAlchemy async, FastAPI).

REST API development for Phoenix. Use when adding, modifying, or reviewing endpoints in src/phoenix/server/api/routers/v1/.

TypeScript conventions and patterns for any TypeScript code in the Phoenix monorepo — including js/packages/, app/, and any other TS…

PHPicker, PhotosPicker, photo selection, limited library access, presentLimitedLibraryPicker, save to camera roll, PHPhotoLibrary…

Tools, patterns, and utilities for creating music with code.

Pixel art w/ era palettes (NES, Game Boy, PICO-8).

Apply advanced pixel art techniques including dithering, palette optimization, shading, antialiasing, and color theory.

Use when building game UI (menus, HUD, dialogue box, settings/save screens) on top of Pixi'VN with an external JS framework (React, Vue)…

Add data visualization to a React Native or Expo app with @platform-blocks/charts.

Display data with the @platform-blocks/ui React Native library.

Show feedback and overlays with the @platform-blocks/ui React Native library.

Build forms with the @platform-blocks/ui React Native library.

Build screen layouts with the @platform-blocks/ui React Native library.

Build navigation with the @platform-blocks/ui React Native library.

Install and configure the @platform-blocks/ui React Native library in an Expo or React Native app.

Play chess against Chesster, the witty engine

Play, resume, inspect, or clear a terminal tic-tac-toe game with persistent user-scoped state and deterministic aggressive or defensive AI.

Fix "pnpm command not found" errors by enabling corepack.

Upgrade pnpm workspace dependencies to target/latest versions: direct/transitive bumps, release-age checks, temporary overrides…

When to activate: Poetry, pyproject.toml, dependency management, virtual environments, packaging, publishing