Skill UI

Diagnose and fix Claude in Chrome MCP extension connectivity hiccups on macOS by toggling native messaging hosts, inspecting sockets, and running the provided toggle script whenever Claude Code CLI or Claude.app Cowork tools report “Browser extension is not connected” or behave erratically.

Master the complete lifecycle of building professional, cross-browser browser extensions for Chrome and Firefox. This expertise covers modern extension architecture, implementing Manifest V3 (MV3), developing content scripts, service workers, and popup UIs. Furthermore, it includes strategies for extension monetization and successful publishing on the Chrome Web Store, ensuring the built tool solves real-world user problems.

Expert skill for building modern, production-ready Chrome Extensions using Manifest V3 standards. Covers advanced topics including service worker management, content script injection, secure cross-context communication (message passing), and implementing best practices like `declarativeNetRequest` and secure storage APIs.