Developer Tools & Repos Agent Skills for Claude Desktop

Three.js lighting - light types, shadows, environment lighting.

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

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

Build crypto wallets using Circle Modular Wallets SDK with passkey authentication, gasless transactions, and extensible module architecture.

Diagnose local Stata, MCP, package, startup, graph-export, and permissions issues.

Check and install all rn-dev-agent prerequisites — Node.js, Metro, simulators, agent-device, maestro-runner, CDP bridge.

Generate environment variable to CLI argument mapping with prefix support, type conversion, and fallback chains for configuration.

Automate Epic Games tasks via Rube MCP (Composio).

Sequential squash-merge of stacked PR chains into an epic branch.

Epic Online Services skill for launcher integration.

Svelte best practices for writing, editing, or reviewing Svelte/SvelteKit components and modules.

Build professional native iPhone apps in Swift with SwiftUI and UIKit.

Use when starting feature work that needs isolation from current workspace or before executing implementation plans - creates isolated git…

ERNE — Autonomous ticket execution — polls a provider, picks up ready tickets, and runs the full ERNE pipeline (validate, plan, code…

When the user wants to design or optimize their app's monetization — pricing, paywalls, subscriptions, or in-app purchases.

Implement and maintain type-safe Electron IPC using eRPC and tRPC patterns in this project.

Manage and document SDK error codes and messages

Build resilient applications with robust error handling strategies that gracefully handle failures and provide excellent debugging…

Use when the user asks to "review error handling in this code", "should this panic or return an error", "design an error type", "how…

Expert skill for designing and implementing high-quality compiler error messages

ESLint configuration, custom rules, and plugin development.