I’m looking forward to following this project, Djoerd! It sounds sort-of IndieWeb like. Where e.g. MicroSub decouples feed fetching from feed reading and Micropub writing from posting, this project decouples index building from the search. Within IndieWeb that allows the creation of a variety of personal tools, to read and write the web. I’ve long been musing about personal search engines and personal agents and crawlers without putting anything into action. I’m curious to see if this project will actually deliver some of the things I dreamt of over time, by enabling personal tools for search.