Most web readers fetch the page again for every caller. Lyrenth is an index: fetched once, cleaned into one AIDocument, then served to everyone who asks for that URL. Over 3.7 billion pages, growing by 50 million a day. Measured, not estimated: the Stripe API reference drops from 307,902 raw HTML tokens to 2,000, a 99.4% cut, and repeat reads come back in milliseconds. The AIDocument format is an open standard, so no lock-in. One line to install as an MCP server. Free tier, no card.