How many clicks a crawler needs to reach this page from your homepage.
Discovery files help real-time agents reach deeper pages, worth roughly one hop.
Models real-time retrieval probability by crawl depth (100 / 96 / 88 / 70 / 42 / 20% at depths 0-5), grounded in the internal-linking-for-AI-retrieval research. Real-time agents have seconds to fetch a URL; past depth 3 retrieval falls off a cliff. Directional.
How this works
Real-time AI retrieval agents (OAI-SearchBot, PerplexityBot) have only seconds to discover and fetch a URL before the model answers. The deeper a page sits from your homepage, the less likely it is reached in time. This tool maps your page's click-depth onto a modeled retrieval-probability curve, and a working sitemap plus llms.txt effectively shortens that path by about one hop.
Keep every key asset within 2-3 hops. Directional, not a crawl simulation.