Testing Google's "modern-web-guidance" skill on a real React app

2026-09-11

Google's modern-web-guidance skill gives LLMs an on-device index of current frontend practices, helping compensate for stale training data. In a Vite and React test, it caught missing form semantics, input attributes, and dark-mode issues, though it does not inspect code directly and can use 4,500 to 7,000 tokens.