Install → run the setup wizard → done. No key, no account, no paid tier: every module and every measurement screen in this plugin is free and fully usable. Index Harmony prepares your WordPress site for AI assistants, answer engines and their crawlers (ChatGPT, Claude, Perplexity, Gemini and others) without touching your files or content — and then shows you what actually happened. Every fix is virtual and reversible: turn a module off and it disappears without a trace.